2004 CHEVY SUBURBAN 5.3L P0300 DIAG & FIX

Автокөліктер мен көлік құралдары

Thank you for tuning in to Super Mario Diagnostics!
We've got a diagnosis of a random misfire, that may throw off some. It can be easy to be led by the symptom, and not focus on the cause.
I hope you all enjoy, like, share, and subscribe!
CHANNELS YOU SHOULD BE WATCHING:
SCANNERDANNER
NEW LEVEL AUTO
PINE HOLLOW AUTO DIAGNOSTICS
KEITH PERKINS
TRAINED BY TECHS
FLAT RATE MASTER
POSITIVE LEAD DIAGNOSTICS
S & A AUTO REPAIR
DIAGNOSEDAN
OZ MECHANICS
ROBINSONSAUTO
SEAN MILLER
SOUTH MAIN AUTO REPAIR
Supermariodiagnostics@yahoo.com
Facebook.com/supermariodiagnostics

Пікірлер: 213

  • @OzMechanics
    @OzMechanics5 жыл бұрын

    thanks for the shout out brother. keep up the great work. i can say scanner danner was the one that inspired me to make videos and got me into doing electrical diagnosis.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Well deserved brother. Thank you! Gotta say, scanner danner has really gotten the wheels moving for a ton of techs! He's done great work 👍 same here, he got me started on electrical as well

  • @robinsonsauto
    @robinsonsauto5 жыл бұрын

    Great job man!!! So many great technicians mentioned I'm honored to have made the list.. that open/closed loop switching was an awesome demonstration!!! Nailed it my friend... Thanks for taking the time and sharing!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks Will!! Gotta give credit where credit is due bud 👍 thanks for checking it out 😉 glad you enjoyed!

  • @limitlessworx5724

    @limitlessworx5724

    2 жыл бұрын

    @@SuperMarioDiagnostics what scanner is that

  • @EXOVCDS
    @EXOVCDS5 жыл бұрын

    Being able to go out-of & into closed loop is quite handy! New to me, never knew that was possible on some brands! Back to watching!

  • @mikecont9742
    @mikecont97425 жыл бұрын

    Thanks for showing whole repair. Thanks for taking the time. Very informative.

  • @SAAutoRepair
    @SAAutoRepair5 жыл бұрын

    You just included my name with the best in the industry. I'm not worthy. I'm humbled. I have a lot to learn yet. Thanks pal

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    It's this kind of humility that makes you a great tech! We all will always have a lot to learn buddy, but you're sharing your knowledge and experience bud. This industry needs your exemplary contribution! So thank YOU for everything you put into your work buddy. And keep it coming! 😃

  • @jetskioremor6692
    @jetskioremor66924 жыл бұрын

    Your such a good man,good attitude;very humble,great video

  • @connert2933
    @connert29335 жыл бұрын

    Amazing video. Been fighting my misfire for two weeks now. Replaced all 8 coils plugs and wires, fuel filter, throttle position sensor. Nothing worked. I replace upstream o2 sensor and boom runs like a dream

  • @mayken6661

    @mayken6661

    Жыл бұрын

    Timing?

  • @spelunkerd
    @spelunkerd4 жыл бұрын

    You make a good point that more specialized problems leads to a more narrow audience. However the internet is a strange thing. I never would have thought that some channels, like obscure math channels, would draw such a massive audience. In this rapidly growing arena of computer diagnostics, online learning is a great way to expand horizons.

  • @billmonroe8826
    @billmonroe88263 жыл бұрын

    Your list has alot of the ones I've watched and a few more I didn't know about. Keep up the good work, Mario.

  • @PaulysAuto
    @PaulysAuto5 жыл бұрын

    Excellent list, loved this video as always! Keep on making videos brother, your an awesome technician and are doing great work!

  • @that95guy73
    @that95guy735 жыл бұрын

    I wish I could have seen this video earlier I have a 08 Silverado with a 5.3 that was doing the exact same thing I took it to a local mechanic and he told me I had a bad lifter well after $2k my truck still doesn’t work so I got smart and went out and got my own scanner and thanks to your video I now know how to find my problem

  • @ws2664
    @ws26645 жыл бұрын

    just came across your channel the other day and got to say great job, i'm also watch every body you named and some you named i have to check out. I'm across the way here Cape Coral fl. Keep putting out great video's like this diag one. Every body knows how to change spark plugs. Great job bro !

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Much appreciated Bill! I'll keep them coming 👍

  • @bradbarber728
    @bradbarber7285 жыл бұрын

    GREAT video Mario . I am a retired tech of 35 years . refreshing to see such professionalism . You are good my friend . people really appreciate that , keep up the good work and keep the video's coming. B-rad.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks for taking the time buddy! Glad to have ya. Much appreciated sir

  • @richylopez3301
    @richylopez33015 жыл бұрын

    Im getting into diagnostic and started watching your videos ive learned alot from you man! Thanks!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    That's great buddy 👍 glad i can help!

  • @eugeneclarke9976
    @eugeneclarke9976 Жыл бұрын

    Thank you Bro., I have a 2006 Suburban 5.3 with the exact same diagnosis and now problem solved, I like the way you walk through the diagnosis know one could have done better

  • @douglasgagnon4869
    @douglasgagnon48695 жыл бұрын

    First of your videos I have watched. I subscribed as well. Humble and informative. Great job.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks Douglas!

  • @baxrok2.
    @baxrok2.5 жыл бұрын

    Yup it all started with ScannerDanner for me too! Nice diag Mario. I've never seen anyone switch from open to closed loop with a scantool. Very cool. Thanks!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Yep not every car has the option, very neat to have:) thanks buddy!!

  • @arcadiogalindez6407
    @arcadiogalindez6407 Жыл бұрын

    dude let me say that video was awesome i learned alot ..from start to finish ..and the shoutouts was important as well.. like you said sharing the knowledge now i know some other guys that i can check out as well ..and yes scanner Danner is awesome looking into taking classes soon when he gets back into Rosedale...loved the whole video ..thank you for the lesson.

  • @gabealexander519
    @gabealexander5194 жыл бұрын

    Thank You First of All, I'm not a Mechanic Taught by Trade School, Just a Simple Shade Tree Mechanic, I Got 30 years of Working as a Automatic Screw Machinist. I'm Dealing with Learning these Codes on a Cheap Harbor Freight OBD2 Scanner, and when I find and Fix the Problem Something Else Pops Up. I should of Learn Diagnostic instead of Aero Space Work. I'm having a Misfire Problem and Bought all Plugs, Wires, one Ignition Coil, Compression testing, Injectors Working Clicking, Still Need to Fuel Pressure Test, 02 Sensor Testing, Monitor Short and Long Fuel Trims, Still Narrowing it Down. Thanks For Sharing Your Information to Help and Educate The Novice, Thank You Etc. Blessings Sent, The Shade Tree Mechanic.

  • @rrmech11
    @rrmech115 жыл бұрын

    I tell you one thing Eric O from South Main Auto is the best hands on mechanic on youtube.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    He's a very sharp dude, and has a way of getting the info across that not allot of ppl can do so effortlessly. I don't think it's really about who's the best, but instead a collective resource. It's good to learn from as much techs as possible.

  • @mrcokez1

    @mrcokez1

    4 жыл бұрын

    @Richard Gill thank you so much for letting us know your opinion.

  • @albertsautodiagnosticsllc2130

    @albertsautodiagnosticsllc2130

    4 жыл бұрын

    Started watching Eric o then Eric the car guy then scanner danner then this guy super mario diagnostics learned alot from all of them

  • @AFatherToTheFatherless

    @AFatherToTheFatherless

    2 жыл бұрын

    Eric is good, but I don't think anyone is more advanced than Ivan at pine hollow auto diagnostics. That man gets the hardest cars to work on I've ever seen and he nails them every time

  • @user-os4wt1cs9m
    @user-os4wt1cs9m Жыл бұрын

    Awesome video! Very informative! Thanks for sharing!

  • @rrmech11
    @rrmech115 жыл бұрын

    Great job with putting the vehicle in open loop. Really enjoying your diagnostics

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thank you Richard! Glad you enjoyed!!

  • @westwasbest
    @westwasbest3 жыл бұрын

    Great video! Thank you for sharing!

  • @spelunkerd
    @spelunkerd4 жыл бұрын

    I have the identical scan tool so these videos are particularly helpful. Great work!

  • @rauls300ce

    @rauls300ce

    4 жыл бұрын

    I just ordered the same one Autel I IM608 it’s a great tool.can’t wait to get my hands.on it.Spend the extra money and get it from Curtis Hardin Out of South Africa. He offers full support on the software and hardware it is worth it.

  • @HomieHektor
    @HomieHektor5 жыл бұрын

    I watch more channels here on KZread, than I do in cable 🙌🏼 Great video dogg 👊🏼

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thank you Hector!

  • @jasonc.4683

    @jasonc.4683

    5 жыл бұрын

    🤣🤣🤣. Me too. I watch more here than actual cable. Are we weird?🤔🤔🤔

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    What's cable? 🤣

  • @jasonc.4683

    @jasonc.4683

    5 жыл бұрын

    @@SuperMarioDiagnostics U are to much 🤣🤣

  • @PaulysAuto

    @PaulysAuto

    5 жыл бұрын

    Lol same!

  • @olid.7568
    @olid.75684 жыл бұрын

    I just found your Channel thank you for making great videos!!!!!👍👍

  • @EXOVCDS
    @EXOVCDS5 жыл бұрын

    Great list of channels!

  • @joelmerritt9350
    @joelmerritt93504 жыл бұрын

    Nice tutorial great help, thanks Joel

  • @danielerevia6225
    @danielerevia62255 жыл бұрын

    I didn’t know the Autel had that special function. Thanks now I can check that out

  • @exmotorsports
    @exmotorsports5 жыл бұрын

    Ya man.. Cause n Effect is in play here. 🤔😜 Didn't exactly get to load test the wiring like you want when the test bulbs go wonky. Lol Good run down of all the inspiring channels..fully agree with you. All of them inspire me as well and learn from them too. Rock on Mario..Keep them rollin. Cheers Bro

  • @jasonc.4683
    @jasonc.46835 жыл бұрын

    👍👍👍. Nice one Mario. Nov.2017 my whole life changed when I went on scannerdanner premium as well. Then the whole KZread with the great guys u mentioned just expanded it to a whole other level. But Paul is what allowed for me for that door to be opened. I can't ever be grateful enough for that Man. Nice video though. I too when I see 02 codes with misfires was taught is the misfire the cause or the effect. Nice to point out the black wires for the 02 heater circuit. But question are all the 02 sensor with black wires the heater circuit? 🤔🤔 Knowing that will help other people with the wiring. I remember I had one 02 sensor chewed off completely from the harness side, not the 02 sensor and those harness connector wires are not ur standard white blue and 2 black wires. But knowing which one was what helped me with looking at the wiring diagram to re wire them correctly. Knowledge is power and with these great techs on here anything is possible. Keep doing ur thang brother god bless

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Not all oxygen sensors are clack wires for the heater circuit, so always refer to the diagram! Thanks for watching and commenting Jason!!

  • @-LiFe-ej5mv
    @-LiFe-ej5mv5 жыл бұрын

    P0300 my yukon had was a dead ignition coil pack replaced it no more misfire, rough idling or smell of rotten eggs.

  • @nywildfire512
    @nywildfire5124 жыл бұрын

    Pro gentleman good communication 👍🏽

  • @ManuelSanchez-qy5iz
    @ManuelSanchez-qy5iz4 жыл бұрын

    Mario contador respeto me gusta tu forma de pensar y de compartir con la demás gente gracias por tu ayuda y el apoyo a tus otros compañeros si todos pensamos igual que tu este mundo seria otro muchas gracias 👍👍👍

  • @JuanRodriguez-cm1rx
    @JuanRodriguez-cm1rx2 жыл бұрын

    Thank you for going into detail

  • @SouthMainAuto
    @SouthMainAuto5 жыл бұрын

    DUDE! I just realized when I went to check on your videos to see why you haven't had anything up in a while it had me UNSUBSCRIBED!! Man I have some catching up to do now! Oh and I re-subed ;)

  • @SouthMainAuto

    @SouthMainAuto

    5 жыл бұрын

    Rust!? Ahhh come on man don't knock it till you try it! You'd love it!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    It's an honor Eric! 👍 truly is! I did Have a good share of rust on a jeep liberty today, guess whose tips I kept in mind? 😉

  • @EKHondaMotive
    @EKHondaMotive5 жыл бұрын

    👍👍👍👍👍 Another great fix! By the way, thanks for the "to watch" list. I need to check out a lot of these guys.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks 100! Check them out, you won't be disappointed!

  • @odishoodisho4904
    @odishoodisho49045 жыл бұрын

    Great job and excellent diagnostic

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thank you sir

  • @neilmurphy845
    @neilmurphy8454 жыл бұрын

    I love the deep stuff people taking engines apart I'm the same I learned alot from KZread

  • @billylongley9580
    @billylongley95804 жыл бұрын

    Great information “ thank you

  • @lovetolearn5253
    @lovetolearn52535 жыл бұрын

    I love how scanner Danner was first lol. I learned so much from that dude crazy. First starting out on di work he was the go to for me. I'm sure your list isn't ordered in anyway but It just caught my eye

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Well scanner danner is the only one in order 🤣 he's the man! If it were not for him, I'd be a lube tech still. Thanks for watching!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Well scanner danner is the only one in order 🤣 he's the man! If it were not for him, I'd be a lube tech still. Thanks for watching!

  • @andrewk778
    @andrewk7785 жыл бұрын

    Good test tip. Thank you for sharing.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    No problem Andrew!

  • @contactclement23
    @contactclement234 жыл бұрын

    Great job!

  • @jorgegomez2329
    @jorgegomez23294 жыл бұрын

    Gracias broder buen bideo bien explicado

  • @naushadali95
    @naushadali955 жыл бұрын

    love your channel. thanx

  • @kyletuttle9064
    @kyletuttle9064 Жыл бұрын

    Great job bro

  • @indigenousbeauty83
    @indigenousbeauty832 жыл бұрын

    Thank you I been working on my Chevy Tahoe 05 been having missfire I think I'm go get O2 sensors wish me luck otherwise I have appointment Tuesday at shop.

  • @7minnow
    @7minnow4 жыл бұрын

    Great job keep it up

  • @BigTrav256
    @BigTrav2564 ай бұрын

    I learned a lot from you in this video thank you you help me fixed my truck bout to subscribe

  • @denniseckert8162
    @denniseckert81625 жыл бұрын

    Great video thanks

  • @brucekaiwi3839
    @brucekaiwi38393 жыл бұрын

    Voltage drop diagnostics is another great channel

  • @elbrujolosabetodo
    @elbrujolosabetodo5 жыл бұрын

    great videos Mario, very thorough

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks Sergio!!

  • @elbrujolosabetodo

    @elbrujolosabetodo

    5 жыл бұрын

    Gotta give you thumbs up for mentioning all these channels and sharing the knowledge, respect man.

  • @coachmromero33
    @coachmromero332 жыл бұрын

    Good info thanks

  • @SteveRobReviews
    @SteveRobReviews5 жыл бұрын

    The open loop to close loop switching is great. Nice one Mario - great techs on youtube there.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks Steve, yes plenty of amazing techs out there to check out, thanks for stopping by 👍

  • @robinsonsauto

    @robinsonsauto

    5 жыл бұрын

    Mario. This Steve Rob guy is trouble 😂😋 actually he is one of the most loyal supporters you'll find on youtube! Steve has done well~ coming from a peanut farmer ;) inside joke

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Yes i see that, i have no idea how he found me, but he is a model subscriber. He is a bit on the wild side 😉 but that's whats so cool about him 😎

  • @cjrod4132
    @cjrod41325 жыл бұрын

    Gracia por la información.

  • @lowridermig
    @lowridermig5 жыл бұрын

    Great Diag bro. And yes Train Train Train.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks Miguel! That's right!!

  • @felmar39
    @felmar395 жыл бұрын

    thanks Mario I feel the same about paul danner , I been follow this guy for almost 5 or 6 years and he make me better tech, there is no way to pay him back,and the rest of the guys also they great I follow all of them , check ivan of pine hollow auto diagnostic , he is good too, but totally agreed in everything you said , thanks, keep the good work

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks Felix, yes I had Ivan in my list but totally forgot to mention him. All great techs!

  • @toddsonic
    @toddsonic5 жыл бұрын

    We have found some Toyota's use the rear o2 sensors for feul trim as well, through us for a loop until we figured that out.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    You are absolutely right, usually the cars that have them tend to have a extra pid for them. Thanks for swinging by!

  • @Jordan-ym5gf
    @Jordan-ym5gf4 жыл бұрын

    You forgot to mention how funny all these guys are too

  • @hillbilly7432
    @hillbilly74323 жыл бұрын

    Thanks bud nice work not shure why they dident fix the wire ?

  • @CoolasIce2
    @CoolasIce25 жыл бұрын

    Good video. Don't forget *Ivan* from _Pine Hollow Auto Diag._ .

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    I had him on my list, and he's the one that led me to Keith defazio. I don't know how i missed him. Thanks!

  • @johndoe-uf9pu
    @johndoe-uf9pu3 жыл бұрын

    bout the time i think i have it figured out, someone who knows what their doing comes along

  • @raszamataz46
    @raszamataz465 жыл бұрын

    thanxs for making this vid.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    You're welcome!

  • @franciscocampos3687
    @franciscocampos36872 жыл бұрын

    Hi Mario. Thanks for sharing your knowledge. I need your opinion on this. I Hebe a 2001 Chevy Silverado 1500 5.3 and I heave a po300 miss fire, I have already changed the 4 h2 sensors fixed a manifold problem that the scanner indicated me, I replaced the coil packs, the spark plugs and the cables And the fuel filter.and i still have the po300 miss fire problem.what do you think is wrong with my truck? I will appreciate your opinion. And thank you for your opinion in advance.

  • @paquesepas6696
    @paquesepas66964 жыл бұрын

    I am fighting a p0300 on my 07 4.8L Chevy, that's my only code and my misfire counter is showing misfires on cylinder 6, 7, and 8 (torque pro app). Thing is my status is showing that computer is only using 1 o2 sensor for feedback as it says in a closed loop feedback fault. And ideas I'm thinking head gasket or computer since I changed both sensors to new oem.

  • @JoesAutoElectric
    @JoesAutoElectric5 жыл бұрын

    Very nice brother. How many guys you know that would have completely disregarded o2 operation here and threw all sorts of parts at it?

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Very easy to get swayed, that's why i share these little details, damage control of the industry 🤣

  • @ladrakeus9252
    @ladrakeus92525 жыл бұрын

    My suburban was doing the same thing same codes and i was told by pepboys it was the intake manifold, i replaced it with a brand-new one with gaskets, took it back pepboys, its the knock sensors, change those, took it back to pepboys, its the ignition coils. Now I know they didnt do any diagnoses like this mechanic did. Im out $243 and still have the same issue p0300, and pepboys offered to fix it for $891 when its probably just oxygen sensors

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    That's a shame. Take it elsewhere. Where are you located

  • @CTUBS-sh5ww
    @CTUBS-sh5ww3 жыл бұрын

    I gotta do all my o2 sensors. One of my connectors got ripped out some how and now I gotta replace it. Sucks cause it's the one from the harness.

  • @roxanneabbott8424
    @roxanneabbott84245 жыл бұрын

    Thanks for your video but you forgot Ivan at Pine Hollow Diagnostics young and brilliant!!!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    I had him in the list lol i don't know how i missed him 😳

  • @roltyd22
    @roltyd222 жыл бұрын

    Mario what brand 02 would you prefer to use? Ive got a Bosch thats been on for about 2 months getting heater code on it and P0300 code also

  • @rogeliorivera2682
    @rogeliorivera26822 жыл бұрын

    Did you change the sensors on both banks( upstream)?

  • @jamesorellana7686
    @jamesorellana76863 жыл бұрын

    Que tal espero y este bien alo que pasa que le cambie las cabezas a una silverado 2005 porque pasaba agua pero después me prendió la luz y es el código p0300

  • @wyattoneable
    @wyattoneable5 жыл бұрын

    Oh man, having bi-directional control was very helpful in this case. Did you say your using the Autel 908? I love the list of techs here. It's been years since I've watched TV. The best programs are right on KZread. I'm researching a can bus problem for a friend so I'll go over to Diagnose Dan and see what he's up too. You make a good point about getting views. The most watched video I have is "How to check transmission oil level on a Dodge". Great video Mario.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Yes I'm using the maxisys 908. Diagnose Dan is the man, great stuff! Sadly the general public will flock over the easiest things, maybe someday that'll change, as cars get even more complex lol maybe not. Thanks for watching Wyatt!

  • @EXOVCDS
    @EXOVCDS5 жыл бұрын

    LOL... my loadpro pins are also bent! =)

  • @jamesbarrows551
    @jamesbarrows5514 жыл бұрын

    Hey i got a 05 bank 1 sensor 1 code on it runs horrible po300 code could the o2 cause this?

  • @danielerevia6225
    @danielerevia62255 жыл бұрын

    How do you like the Micsig scope? Looking at the UScope but it’s only 1 channel might be enough for what we do at our shops. Also looking at the Snap-on Vantage ultra. The Pico looks really nice just sure if I’ll have space to have the PC stuff at my current shop

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    I loved the micsig, while it worked. Huge let down when it died. If at all possible, try to get four channels, bare minimum 2 channel in my opinion. Thanks for watching! Happy New Year!

  • @rahrah8076

    @rahrah8076

    4 жыл бұрын

    Super Mario Diagnostics micsig broke? Damn

  • @BuggysTowJam
    @BuggysTowJam5 жыл бұрын

    Hey Mario, I've got a 2010 silverado, it has 18 psi key on engine off, after initial prime, psi goes to 0 immediately. It takes a couple cranks to start the truck. And the truck runs at 18 psi. It sets several lean codes. And runs rough. I tested fpcm, pink ignition feed and it was 14.2v running, red with white tracer B+ was also 14.2 running. Then i tested the thick grey wire that is positive to fuel pump. Truck running and idling it was fluctuating between 11.4 and 11.9v. The pink ground to fuel pump was .20mv. Now here is where I'm confused, the battery voltage was 14.2 running. The power feed from fpcm to fuel pump was between 11.4 and 11.9v i know the pump is bad because the check valve is not holding pressure, key off pressure drops to 0 immediately. Was the grey wire power feed to fuel pump supposed to be battery voltage 14.2 or was the 11.4, 11.9 good? My understanding, and i may be wrong is the regulator is built into the pump and the pump is pulse width modulated to increase pump speed to build more pressure or less pressure depending on fuel rail pressure sensor and fuel demand. I called the pump on this truck but I'm questioning myself on the fpcm. Any help would be much appreciated. I'm very green at diagnostics and want an experienced opinion. Because if the 11.4 and 11.9 were supposed to be battery voltage then this truck will need a fpcm also. Thank you in advance for any help!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Oops i read that wrong. Your supply is good to the fpcm. You'd have to command the fpcm to 100 percent command and recheck. Most pwm fpcm won't supply full 100 percent command at idle. I don't think you have anything to worry about if your duty cycle matches your life data pid command percentage

  • @BuggysTowJam
    @BuggysTowJam5 жыл бұрын

    Great video as usual Mario! I've been hearing about super saturday alot. Can you elaborate? What is it? Where is it? Are people like me noob able to attend? Thank you! Thumbs up as always!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks bud! Super Saturday is a world class training day in Pennsylvania this Saturday. Any one can attend. You may want to stay tuned tonight kzread.info/dash/bejne/iquBrtRrfrzgfqQ.html I'd be stoked to meet you there bud!

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    buggyalstare1971 also check this out diag.net/msg/m2dej4pmax0wiexhvvbzfywnnt?m=m75x6pufk7y8e325hnigtb74d4 And this paautotraining.com

  • @BuggysTowJam

    @BuggysTowJam

    5 жыл бұрын

    @@SuperMarioDiagnostics awesome! Thank you for sharing the info! I'm definitely looking forward to this evening! I hope to see you there as well!

  • @drewgaming6175
    @drewgaming61754 жыл бұрын

    Hello, nice video. Which Autel Scanner are you using?

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    Autel ms908

  • @maxfrederick1244
    @maxfrederick12444 жыл бұрын

    I am curious, and I know this is an easy question. But do you always test with a grounded test light on the heater circuit to find the 12v power then you know the other one much be the switched ground and can apply 12v through testlight to test? Otherwise if you go in with testlight hooked up to 12v do you risk shorting something out?

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    No it won't short, the pcm would give a code for a short if there was one, and likely shut the circuit off until you clear the code. There's no risk as long as you know which wire you're probing

  • @maxfrederick1244

    @maxfrederick1244

    4 жыл бұрын

    @@SuperMarioDiagnostics awesome thanks. Basically look for the two black wires on a 4 wire o2 sensor and you know those are probably heater circuit? Or just look up wiring diagram for each car is prob safest

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    Yes, most cars use both black wipes for the heater circuit, some use white. It's always best to look up the diagram

  • @maxfrederick1244

    @maxfrederick1244

    4 жыл бұрын

    @@SuperMarioDiagnostics Thanks a bunch, always great content

  • @Mmmmgrolsch
    @Mmmmgrolsch5 жыл бұрын

    Great video, what is the diag tool you're using? Looks really good

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Thanks! I'm using the autel ms908

  • @rauls300ce

    @rauls300ce

    4 жыл бұрын

    Super Mario Diagnostics I thought it was the Autel IM608 I think they have the same software anyway.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    That was a year ago. Now i use the 608

  • @TheBucktowncrazy
    @TheBucktowncrazy4 жыл бұрын

    Mario great video, I still have a question about the P0300 misfires. I have a 2007 GMC YUKON XL 5.3. I'm having code P0300. When I take off my stabilitrac light comes on and shifts really hard. I have 250k miles. Besides taking it back to a shop should I change all 4 O2 sensors?? Thanks any advice will help about to find a cliff or bridge and drive this SUV off of it.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    No, absolutely not. I'd check out live data and see what codes are setting in the ebcm before anything

  • @TheBucktowncrazy

    @TheBucktowncrazy

    4 жыл бұрын

    Thanks for your reply, guess I need to go buy a code reader that gives more info like which cylinder is misfiring. Most of those $60 to $90 readers that Auto Zone or Advance sell only read and allow codes to be erased. Curious which ones they sell allow you to read history or live data. It will come in handy on my kids vehicles. Any advice thanks again

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    They won't be cheaper. You're looking for an advanced scanner. That's easily in the hundreds

  • @TheBucktowncrazy

    @TheBucktowncrazy

    4 жыл бұрын

    @Angel Puente I sure did, After spend extra money and a bunch of hours online. A lot of comments said to check to see if the plugs are loose and for a bad coil wire going to the plugs. Well it was both on my SUV, I had the problem with the #1 plug. I change the plug and wire and it's fine now. Good luck hope it helps.

  • @TheBucktowncrazy

    @TheBucktowncrazy

    4 жыл бұрын

    @Angel Puente You should be able to tell if one of them are loose by touching it. When plugs are in correctly they are thight. If it move at all then that's not good at all. And if you do find one loose change it don't just tighten it back down it most likely fouled out.

  • @hectormatrecito9504
    @hectormatrecito95045 жыл бұрын

    What up,my problem is PO304 new sparks plugs cables also coi and throudle cleans.check engine and car sliding lights still on?

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Is it still misfiring after codes have been cleared?

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Do you own a scope? It could be an injector or engine mechanical

  • @philh9238
    @philh92385 жыл бұрын

    should have pulled the brake booster hose to get the full rich o2 sensor to try and move. if it didnt which it wouldnt have. just unplug the o2 sensor look for around 450 mv on scanner

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Right but how would that address the heater circuits that I had codes for?

  • @mamadoudao5298
    @mamadoudao52983 жыл бұрын

    👍👍👍👍

  • @RicardoRodriguez-fq5vs
    @RicardoRodriguez-fq5vs2 жыл бұрын

    I change the o2 sensor at first time and no lost time checking and checking

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    2 жыл бұрын

    What???

  • @johngray2526
    @johngray25263 жыл бұрын

    Just described brother and do you have knowledge about front suspension on a 2004 2wd. 4.8 ? If so what would be best a level kit or a lift kit I kinda want the truck higher so I can haul a camper trailer it's a weekender and the rear is kinda to low I'm going for rough country kits and on a monthly fixed income budget $ 600 doesn't go far at all I'm just having to put a little back to build up some funds because it's my only transportation

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    3 жыл бұрын

    I don't know anything about lift kits

  • @johngray2526

    @johngray2526

    3 жыл бұрын

    @@SuperMarioDiagnostics that's ok bruh I got a local company that does that they want to charge me $ 500 in labor to install a 4.5 inch rough country lift but dam $650 for the lift kit is understandable and dat $ 500 labor is ridiculous to me if I wasn't 55 years old I'd do it myself 😁

  • @Chevy-f4l
    @Chevy-f4l5 ай бұрын

    15:15 man common sense is all you need brother he said that right cause people be overtightened stuff for no reason

  • @TexasRigour
    @TexasRigour3 жыл бұрын

    O2 sensors fixed Yukon p0300 🤔

  • @tjac4801
    @tjac4801 Жыл бұрын

    I got that po300 code the other day and then star smelling a rotten egg smell

  • @rwrobs777
    @rwrobs7773 жыл бұрын

    Mario, you missed Pine Hollow Auto Diagnostics !!…you think Perkins is smart…Ivan has a Mechanical Engineering and Electrical Engineering degree from Cornell (Ivy League) and a PhD in Materials Science from Penn State…now THAT’S smart !!

  • @johngray2526
    @johngray25264 жыл бұрын

    I know this is old but if you are still on this channel let me know I'll for sure subscribe to your channel I've been chasing po300 for to long so I'm going to check the o2 sensors and get bk on this channel to confirm the issue great video brother keep up the good work young man BON TEMPS

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    Yep still here LOL

  • @justintemple3432

    @justintemple3432

    3 жыл бұрын

    Was it your o2s?

  • @johngray2526

    @johngray2526

    3 жыл бұрын

    I don't know but I've changed all plugs & wires along with all coils new carb knock sensors & harness cleaned intake throughout the whole intake let it dried 3 days I've also got better intake manifold gaskets and never bothered the o2s still ran good except rough idling I've tested for vacuum leaks and none found even the intake wasn't leaking at all that's when it started to mind boggling me so I just drove it around like a little over 100 miles and it started to run smooth again I've checked the system out wit a ob2 tester to see if anymore codes popped up and none showed up it even said the evap is working properly again thank God because that was the next project to tackle but the codes all cleared up and still my daily driver at going on nearly 250000 miles on her yes indeed I've gotten a decent built 2004 4.8 engine

  • @alsanchez9166
    @alsanchez91663 жыл бұрын

    Chingao acabo de ponerle cabesas nuevas ,lifters, afm oil pressure sensor, porque un lifters collapsed, y ahora tengo p0300 y corre mal :(

  • @itzPowell
    @itzPowell5 жыл бұрын

    What software are you using?

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    All data

  • @kevinvallier2964
    @kevinvallier29645 жыл бұрын

    What scanner are you using

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Autel maxisys 908

  • @L_22_BBALL
    @L_22_BBALL4 жыл бұрын

    Who else has the diagnostic tool you use? The two shops I have been to have very simple tools that say the code and misfire...nothing else. I feel it will not be properly fixed like you do in this video.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    Unfortunately that's a problem with the industry. I can only say that you'll have to seek out the right shop. Are they certified? Ask to meet the technicians, see if they attend training... Etc

  • @comaradelee
    @comaradelee5 жыл бұрын

    This issue causses the engine to go rough idle?

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Yes but also stayed running terribly on the road

  • @comaradelee

    @comaradelee

    5 жыл бұрын

    thank you sir for the reply @@SuperMarioDiagnostics

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Anytime

  • @tomsmk3
    @tomsmk34 жыл бұрын

    Where r u located bro????

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    4 жыл бұрын

    Miami FL

  • @mrmotofy
    @mrmotofy5 жыл бұрын

    Bro you need a power probe

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    I have one. Why would that change anything?

  • @mrmotofy

    @mrmotofy

    5 жыл бұрын

    @@SuperMarioDiagnostics Then you wouldn't need to keep moving your test light clamp.

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    😂 that's it? Come on man! I'm not THAT lazy 😆 the time i took to move the clamp is still less than the time it takes to open my box, open the power probe box, unwind it, hook it up and use it. 😆😆😆😆

  • @SuperMarioDiagnostics

    @SuperMarioDiagnostics

    5 жыл бұрын

    Did you at least enjoy the video? 😆

  • @mrmotofy

    @mrmotofy

    5 жыл бұрын

    @@SuperMarioDiagnostics Yes of course I liked it you didn't an awesome job explaining everything...I'm trying to learn, use my Autel and track a misfire on my 04 Avalanche. Found I have a fuel leak down after initial prime, but fine running. New fuel pump 2.5 yrs ago. But don't think that's my issue. Swapped injectors, no difference. Plugs and wires seem good, low resistance, swapped coils no difference. Chasing down every trail so far and ended up here. So gonna try testing the O2 since I found 2 rubbing on the edge of the sheet metal of body under there. But it seems not into the actual wires though.

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