You explain this nicely, nice job on the video with a total dispense of any b/s. I mean, I'm still kind of lost but I get the gist of it. :)

Nicely said and done!

Great write up bro... I like how well you explained it. May I bring up just a few things I believe would help people? So when you unplugged the MAF with it running and went back to looking at the fuel trims it really didn't show that big of a change. First thing is because if I was you I would have reset the long term fuel trims in the scanner to show the instant changes every time you made a diagnosis change. Second is in order to get into SD mode on GM vehicles you have to set a failed MAF code in the PCM. That is 2 trip logic code so it needs to see the failure 2 times before it sets the code. In other words 2 key cycles unless its changed to a 1 trip failure in the tune. Whenever I tune the VVE table in these I first have to fail the MAF and set the code before the PCM references SD and I can then tune it. Otherwise it still will reference the old fuel trims and then your just tuning in circles. This is probably to much info for the standard person trying to figure out there problem, but I thought it couldn't hurt to add this info for the highly skilled techs. I have also had a lot of these HPFP fail and leak fuel into the crankcase. In fact one was so bad the the engine because to tick from the diluted oil and then would stall from the low rail pressure. Great video and keep up the great work and help you are showing people. Kind Regards, Ryan

@scottbaker1800

3 ай бұрын

Thank you

Great video on the money bro

Great video. What shuld the LT trims be at at 40-50mph?

Great video. I have sane issue on 5.3l. Could it be just the oil getting sucked in from the pcv? I don't know if it has ther same hpfp like that 6.2l Thanks

I have 2001 gmc sierra with a 5.3l and ive replaced the fuel filter fuel pump and fuel pressure regulator and its still running rich about -31 shft bank1 and 2

I did the same tes but my engine turned off during the procces...is this a normal behavior?

Nice. My 2013 Si;verado had LTFT B1 -25.8%, LTFT B2 -25.8% and P0172 Fuel System Too Rich (Bank 1). Startup takes 15 seconds. Take-off is very sluggish. 140k with O2 sensor errors. P0053 for “Heated O2 Sensor (HO2S) Heater Resistance (Bank 1, Sensor 1).” Fuel Injector leaking.

I’m having a 5v reference code also a high pressure voltage high code…. Any idea?

Nice good info

What part you change

Good Video i have a 2018 Tahoe with 5.3L only 42,000 KM Check Engine Light just Came on P2099 : Post Cataytic Fuel Trimm Too Rich ? what Gives

I have a Yukon 5.3l with these same codes and I checked the dipstick and had a strong smell of gas from the oil. I just purchased this vehicle a few days ago and Im worried the pumps been leaking for some time and reducing viscosity of the oil. Im going to drain the oil and hope I dont see any metallic shavings. You this failure is common on gm ls engines. Have you seen engine damage from contaminated oil from a leaking fuel pump?

@Pete_Tech_

3 күн бұрын

Yes and no. This is an interesting topic though. Typically modern day oil is pretty resistant to breakdown from fuel, but yes enough of it can absolutely change the oils properties. By that point though it’s probably going to trip oil pressure codes and or the low pressure light. I wouldn’t sweat it too much and just confirm the HPFP needs to be replaced. Definitely change the oil asap.

New Fuel pump fixed it????

Did you found the problem?

Question- Did you know there is a recall on the High pressure fuel pumps? RECALL - HIGH PRESSURE FUEL PUMP LEAKAGE # 14858: Product Emission - High Pressure Fuel Pump Possible Leak - (Feb 19, 2015) It is ongoing… My 2015 Chevrolet Silverado 1500 with RPO L83 is on it but vin not coming up. Figuring it out with GM now

@gdc5ind

4 күн бұрын

I'm going to get in contact with my dealer on Monday and attempt to schedule this recall repair.

Ok but mine IS rough running. Very rough running. Replaced fuel pump and re learned the trim several times but it inevitably always comes back in a short time with rich or lean codes and runs rough. What do I do????

@Pete_Tech_

Жыл бұрын

Check the MAF. Check how responsive your O2s (although that would usually be a particular bank condition). Let’s think about what controls fueling. We need to meter air, and we need to meter fuel. MAF tells pcm the air volume/density. O2s feedback the AFR for corrections/correlations. Assuming all the mechanic is good, properly working HPFP, proper fuel pressure, healthy compression, proper timing, etc. Always verify the mechanical first.

I had a throttle body relearn done to fix the constant problem after cleaning it. I think I may have made a mistake I did a fuel composition reset using X431 on my 2011 5.3 flex fuel suburban , currently have e85 in my tank. Now I have 2 code errors p0171-00 and p0174-00 fuel trim lean system lean bank 1 and 2. Did I do something wrong? I would appreciate any help what to do and proceed. Thank you

@Pete_Tech_

2 жыл бұрын

I’d say very likely you do in fact have a lean condition if that occurred after a fuel comp reset. I’d monitor it on live data and look at what the trims are showing. Lean condition can be a number of things but I wouldn’t necessarily blame it on a comp reset.

@kenken-sr2vq

2 жыл бұрын

@@Pete_Tech_ I did a reset using gasoline filled everything is working fine now. But I feel there is a small continuous leak keeping my fuel rails at 45psi . Since 85 barely you can smell the odor of gas , I smelled something today since my suv is filled with gasoline only . but i still cant find the leak.. my fuel consumption is more than normal its like my tank is leaking only when its on. i checked my gauges perfect, using my scanner I checked everything and also my hwy is 18mpg but with my fuel gauge dropping faster than normal feels like 8mpg.. I used several model gauges to read my average and instant mpg and its good. My question is can a micro hole somewhere with car on can leak out fuel through my fuel line to cause this?

@kenken-sr2vq

2 жыл бұрын

even in lean condition my suv was eating gas.

I have both codes on a 12 GMC Sierra. I do have a bad ac condenser though? Like no air cooling at all. Could this be giving me rich codes because of there being a bad ac condenser?

@Pete_Tech_

3 жыл бұрын

Definitely Not! These HPFPs fail, and the Valves Carbon up as well. Its the inevitable.

@DanDee369

3 жыл бұрын

@@Pete_Tech_ so it's def not anything to do with the air condenser? So possible injectors or fuel pump than I'm guessing. I appreciate the reply

My 2015 Silverado is throwing the same codes. Also idles really rough at low RPMs. Would that be the same solution?

@jakedyer7262

9 ай бұрын

What was your solution? Having these problems.

@Aceinflatables601

3 ай бұрын

I'm having this issue

@enriqueramires8989

29 күн бұрын

Any fix??

Um. I dont understand the end. Is there a part 2 or something??

@Pete_Tech_

3 жыл бұрын

noahkb80 there is a video on replacing the high pressure fuel pump as well as cleaning the intake valves

@johncontos9577

5 ай бұрын

Is the high pressure fuel pump the same thing as a fuel pump in the gas tank? Had it changed but still a rich condition (p2099 and p2097 codes).

What if the truck doesn’t switch over to closed loop with engine warmed up ?

@thundersbc

2 жыл бұрын

Coolant temp sensor?

I need your help man. I got the same codes on mine. 2003 how do I figure it out. Same issues. I have driven it for 6,000 miles with the check engine light coming on and off. Trying to track down what it is and I’ve changed a million things.

@Pete_Tech_

3 жыл бұрын

You have rich trim bank codes on an 03!? That’s rare hmu on insta Pete_Tech_

@crank218

2 жыл бұрын

02 available 5.3 both banks rich 🤷🏻‍♂️

@dewaynesmith8925

2 жыл бұрын

I'm having the same problem I think on my 06 Silverado 5.3 runs fine changed the fuel pump cause that's what auto zone said luckily it was under warranty and changed the mass air flow sensor light still not off I always fill up and run it to empty really could use yall help

@steveo201

Жыл бұрын

@@dewaynesmith8925 hey mine doing the same you ever figure it out

I’ve done this 3 times and the codes keep coming back months later. What do I do now?

@Pete_Tech_

Жыл бұрын

Look at my other videos you’ll see the repair.

What about p2099?

Would installing an oil catch can help this?

@Pete_Tech_

Жыл бұрын

Help yes, prevent, no. 👍🏻

My Longft 1&2 is -25.8

Had this issue, garage said alcohol % was showing 47%. They reset and truck back working great But now few months later issue is back. Truck hard to start mornings, rough idle. Reset is only short temp solution. What should garage do? 2011 SLT Sierra 5.3l flex fuel. 185,000km’s

@greyhairedmountainbiker116

2 жыл бұрын

I got the same issue. 09 5.3l. Alcohol was high then low. I'm going to try the pcv test. not sure if ther 5.3 had the same fuel pump system though. could just be the oil getting sucked in from the pcv? Did you get yours fixed?

@gregwiggins9380

2 жыл бұрын

@@greyhairedmountainbiker116 reset alcohol then week later codes for oxygen sensors! I changed both oxygen sensors on the left side bank 2. No issues yet. Also I stopped refueling until it pour out! I had a habit of topping up the tank not realizing harmful to fuel pump and filters

@RR-ty6ki

2 жыл бұрын

@@gregwiggins9380 Im having the same false high readings of ethanol on my 2013 gmc sierra 1500 flex fuel. I was told by the dealer that short trips may be causing the false readings. Did you resolve your issue?

@gregwiggins9380

2 жыл бұрын

@@RR-ty6ki yes I changed both O2 sensors on passenger side, was getting codes for that too! And big thing I think I’m NOT filling up the fuel tank to the gas cap! I was doing this for the past few years. Also I was adding a bottle of fuel injector cleaner with a overflowing fuel tank. I would have issues it seem shortly after. So New O2 sensors, no overfilling tank. Issue gone.

@fisherguy

27 күн бұрын

Issue still gone?

Awesome video! I need help. I am getting a steady 45 psi on my car 2011 suburban 5.3. I feel like its dumping fuel because my fuel gauge goes down more than normal. I see everyone else mention 50 to 60 at the rails but i am using my expensive x431 scan tool to check everything. All of a sudden after 1 month of using e85 its been extremely bad. Fuel gauge drops fast. I cant find no wet fuel leaks by the engine compartment. My mpg normal at 15 to 18. Now feels like 6. I am also using a scan gauge to read the mpgs and its not bad hwy is 18mpg both dash and scan gaugeii. What the hell is there a small leak some where only when its on? I get no code errors.

@Pete_Tech_

2 жыл бұрын

I’d put money on your HPFP is leaking into the engine. Check your oil yet?

@syndakitpanda1777

Жыл бұрын

It takes about 30 percent more e85 than it would regular gas . Just saying

Where is part two for this issue?

@Pete_Tech_

2 жыл бұрын

On the channel!

I replaced mafs all four exhaust sensors and still the codes come up truck runs good but engine light keeps coming back on

@Pete_Tech_

3 жыл бұрын

? For these codes?

@jarednichols7834

2 жыл бұрын

Inn the same boat bro!!!!

Ok. I removed the pcv hose and plugged both ends as per ur video. My trims dropped to normal range! But about a minute later they climbed again. Any suggestions?

@Pete_Tech_

Жыл бұрын

That is pretty common. Most likely the oil is so fuel saturated that it will permanently affect trims until the oil is changed. However, if you have this engine set up with over 120,000 miles it’s advisable that it probably needs a high-pressure fuel pump. Keep in mind I said probably, not certainly.

What code reader is that?

@Pete_Tech_

3 жыл бұрын

Snap-on Triton D8

My 2016 GMC Sierra have a very strong odor of gas fumes in the cab. My oil smell like gas when I changed it. I Took it to 3 GM dealerships to get it diagnosed no one can find the problem. I have no engine light on either.

@Pete_Tech_

4 жыл бұрын

I’d put a high pressure pump in it!

@markbrinegar3646

3 жыл бұрын

I've read that if you get fuel in the oil, its the high pressure pump. Did you gain oil? Have you been burning off white smoke?

@strayedarticle7666

2 жыл бұрын

Did you ever figure out what caused fuel in the oil?Thats happening to my 2014.

@Buuboi214

2 жыл бұрын

@@strayedarticle7666 I changed the high pressure fuel pump. I can still smell gas fumes in the cab. Come to find out it was the vacuum pump. Which GM has a recall on it and changed it out for free. Solved my gas fumes in the cab. As for the oil smelling like gas I just think is somewhat normal now. I have over 100,000 miles on my truck no other problems.

@strayedarticle7666

2 жыл бұрын

Buuboi214 thanks for the info.It must be sorta normal for oil to smell like fuel because mine does and my boss has an f150 and it did also.Maybe that’s just how it is with new trucks.

Ok thank you now what’s the fix

@Pete_Tech_

Жыл бұрын

Watch the other videos! HPFP!

"we're not gonna wait, we're gonna get right into it" then it's over..? Is there a part 2 or what? If so why not post a link to it in your description?

@Pete_Tech_

27 күн бұрын

Yes lol, just visit the channel friend.

Ford Ranger 2014 2.5L 4 cil Gasolina -Codigo del vehiculo: P0172 Por favor ayuda! Ya hicimos varias cosas y mi mecánico no encuentra la falla! Se ha hecho esto: -limpieza de cuerpo de aceleración -cambio de filtro de gasolina -cambio filtro de aire -cambio sensor de oxígeno -se calibraron los inyectores Se le reviso: Válvula PCV Bujías Bobinas Mangueras de aire Presión de gasolina Y el código P0172 sigue apareciendo Aproximadamente 4 horas después de darle uso normal a la camioneta. Que podemos hacer? Mi mecánico ya no sabe que hacer y yo ya estoy cansado. Cada que la llevo me cobra algo nuevo.

@coco11coco

3 жыл бұрын

estan cambiando por cambiar. tienen que limbiar bien INTEI O aralla como le dicen en otros paises. la carbonilla entre las valvulas de admision hay que limpiar.

@mclovengarcia2883

3 ай бұрын

Vendela!

Is it just as common on the 6.2?

@Pete_Tech_

5 ай бұрын

Absolutely

So what part was bad?

@Pete_Tech_

3 жыл бұрын

This is one of two videos. I would encourage you to check out the second part and consider subscribing!

My tahoe 2011, I don't know p0175

Have a Cadillac SRX 3.0. P0172 and 175.....new high pressure pump installed no fix...

@Pete_Tech_

3 жыл бұрын

Can always have a shop perform some diagnostics on it!

@andrewcimochowski

3 жыл бұрын

@@Pete_Tech_ I figured it out..was a bad mass air.. I missed it due to the settings in metric instead of grams on the scan tool..

@johnnymartinez305

3 жыл бұрын

@@andrewcimochowski what were you symptoms? i have a 2014 Chevy Silverado 5.3L V8.

@Pete_Tech_

3 жыл бұрын

Silverados usually are severe carbon buildup on intake valves, HPFP, or potentially dirty mass air flow. Use brake clean from at least 8 inches away from the screen and blast for 3-4 seconds. Blow dry with LOW pressure air, or let sit for 30 mins, then run vehicle again. Cleaning the mass air flow is a good place to start. Rare the Silverado mass air flows go bad on the newer ones.

@johnnymartinez305

3 жыл бұрын

@@Pete_Tech_ what's your opinion on using Seafoam to clean the injectors and replace the air filter? I've seen a few videos with error codes p0172 & p0175. they said this cleared the codes and the problem that seemed associated with an o2 sensor. symptoms being misfire, system too rich and even transmission slip like but the transmission wasn't actually slipping.

Is this not the ethanol level being detected too high (falsely)?

@Pete_Tech_

3 жыл бұрын

No, the vehicle knows the ethanol level if it’s flex fuel capable. Rich trim codes mean there is an excess of hydrocarbons crossing the O2s in comparison to the calculation the vehicle man. High ethanol content will lean out fuel trims on a vehicle.

@RR-ty6ki

2 жыл бұрын

@@Pete_Tech_ Would a false high ethanol content on a flex fuel create a rich situation if the tank actually had regular fuel?

I only have p0175 and long term is -30%.

@robindabank4089

Жыл бұрын

Gross

so is the fuel pump the problem?

@Pete_Tech_

3 жыл бұрын

Yes but you have to watch the other video on HPFP replacement to see the confirmed fix.

@jameswalton8927

3 жыл бұрын

@@Pete_Tech_ how much does that job cost at the dealer?

@dewaynesmith8925

2 жыл бұрын

@@Pete_Tech_ would ot be the same on an 06 Silverado I thought the fuel pump was in the tank

Maany b Carnero

And so video cutoff with no solution. Just gave it back to customer and told him to take it elsewhere