Bad Grounds Can Do Crazy Things! (Low Fuel PSI)

Автокөліктер мен көлік құралдары

This is a classic example of why we always test powers and grounds on a fuel pump with a low fuel pressure problem.

Пікірлер: 60

  • @DestDroid
    @DestDroid5 ай бұрын

    Wait so the customer actually described the problem correctly? That's insane.

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    He did! And he smelled like alcohol when he came in and I thought he was just drunk lol

  • @mr.technician2638

    @mr.technician2638

    5 ай бұрын

    😅​@@ScannerDanner

  • @goinhot9133

    @goinhot9133

    5 ай бұрын

    @@ScannerDanneris this a main ground from the block to chassis/battery? Or a bad ground somewhere else? I’ve had my chassis ground do weird stuff but always wondered if a bad ground ina separate circuit would do the same thing..

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    ​@@goinhot9133check out the full video linked in the short. It's only 11 minutes long. Thanks so much!

  • @lakesautomotivediagnostics6509

    @lakesautomotivediagnostics6509

    4 ай бұрын

    Crazy stuff

  • @mostlymoparih5682
    @mostlymoparih56825 ай бұрын

    That is crazy. Good stuff Professor.

  • @careyautorepairs
    @careyautorepairs5 ай бұрын

    Saving this to my playlist.

  • @mr.technician2638
    @mr.technician26385 ай бұрын

    Rules of governing on parallel= adding another resistance on a parallel circuit, increases total current flow...it seems this is what's happening here, pump alone it will good when you add head lamps another load, ground path can't handle anymore due to current increases making the shared ground thats already loose or corroded gets hot, temperature affects current flow and this is the example.

  • @dantheman1106
    @dantheman11065 ай бұрын

    Old Ford Truck had starting problem. Somehow the headlight switch is tied into the ignition system. Replacement of light switch fixed all the weird crap that was going on. 35 years ago so I don't remember how I figured that one out. Crazy things can happen.

  • @chrisspear3551

    @chrisspear3551

    5 ай бұрын

    Funny you say that becuse I had the same problem on a 1995 Ford F250 I w as so happy the switch was the fix

  • @petem6291

    @petem6291

    4 ай бұрын

    My father had a 53 ford you would have to pull the headlight switch out to start the car??

  • @nateb.1568
    @nateb.15685 ай бұрын

    Thats wild 😂. Thats about as bad as my lawnmowers ignition being grounded through the headlights lol.

  • @johnasosajr
    @johnasosajr4 ай бұрын

    That’s wild I would have never guessed that could even be possible

  • @SuperSecretSquirell
    @SuperSecretSquirell5 ай бұрын

    Just don't drive at night 😂

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    😂😂

  • @gnomiefirst9201
    @gnomiefirst92015 ай бұрын

    Turn up the radio.

  • @timothyball3144
    @timothyball31445 ай бұрын

    Thats crazy. Thanks for bringing the weirdness.

  • @isalmankhan1
    @isalmankhan14 ай бұрын

    Amazing this one is really different, it sure must be a corroded block ground, but that's my opinion😅 Thanks for sharing SD, STAY BLESSED🙏🏻🙏🏻🙏🏻

  • @lanwickum
    @lanwickum4 ай бұрын

    Had headlights and blinkers cause a pickup to do all sorts of stuff. The dash had all the lights on. Traced to corrosion in fuse box.

  • @homealone5087
    @homealone50874 ай бұрын

    I had the same thing. While signaling, while braking, and headlights. It was the alternator.

  • @ScannerDanner

    @ScannerDanner

    4 ай бұрын

    Check out the full case study linked in the short. Thanks!

  • @nunya2814
    @nunya28145 ай бұрын

    First thought might be something to do with the alternator or maybe bad grounds.

  • @sb350allday
    @sb350allday5 ай бұрын

    lol awesome thanks for sharing

  • @spelunkerd
    @spelunkerd5 ай бұрын

    Although the bad ground title of the video explains it well, to be honest that would not have been my first thought. Just like headlights dim when a starter is used with a weak battery, the fuel pump may get less juice when lights test a weak battery, too. And this might be a first clue with a failing alternator, where the alternator can't keep up with high demand. I remember limping home one cold winter night like this with a bad alternator. Those wise enough to do further testing might show another clue, like voltage drop on the ground line. The bad ground could mess up alternator charging, so I can see how the unwary might get a new alternator by mistake! The take home message is not to have tunnel vision. It makes me wonder why some are so quick to call the alternator bad, without drop testing each side.

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    For sure! I'm hoping with time that people understand these shorts have the links to the original video they're pulled from and when they have questions or judgements lol that they'll start watching the full video first.

  • @kevincampbell8298
    @kevincampbell82985 ай бұрын

    Crazy!

  • @chrisspear3551
    @chrisspear35515 ай бұрын

    Well you could look at it this way .when ever you have to use any of those lights you probably should be Slowing down any how lol

  • @marksavastano8339

    @marksavastano8339

    5 ай бұрын

    Find the ground wire more than likely it’s dirty and not doing its job I clean mine with battery cleaner my car was not starting next day Evan with brand knew battery it took me a while to figure all the fuses I checked them all no dropping voltage so just for the hell of it I clean the battery cables real good tape them up cleaned all the grounds so far so good only when I put the air conditioner on does it get a little funny the ants go down but that’s normal but are you gonna 96, 4.6 with 160,000

  • @bosaadbosaad6792
    @bosaadbosaad67924 ай бұрын

    i think short to grond in headlight wiring

  • @user-uf5xr8yk5t
    @user-uf5xr8yk5t5 ай бұрын

    Oh my God, the video was posted before 11 I really thank you for all the love from Yemen ❤

  • @TheCanadianBubba
    @TheCanadianBubba5 ай бұрын

    Chassis grounds rotted off, lots of that up here.

  • @aranhaydar9195
    @aranhaydar91955 ай бұрын

    I think that's probably a weak ground somewhere, But i actually had a Nissan brought to me around 1 year ago with the same complaint but the cause for that was a burnt out tail light, some Nissans do weird stuff when there's something wrong with the tail lights 😵‍💫

  • @kenmelrose3429
    @kenmelrose34295 ай бұрын

    trying to find a path to ground

  • @33ad1
    @33ad14 ай бұрын

    Yep. Ground problems.

  • @2491kridge
    @2491kridge5 ай бұрын

    Just wire in a secondary fuel pump and tie it into the headlight switch, that way when you turn on the headlights it kicks on your secondary pump and makes up for the lost power, easy peasy

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    😂

  • @eliezerramosjr1017
    @eliezerramosjr10175 ай бұрын

    If his control sided systems like lights causing these misfires then most likely sounds like a load issue potentially a wire issues like an open or short ground.

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    Check out the full case study linked in the short!

  • @ronvessells1356
    @ronvessells13565 ай бұрын

    I would say check the fuel pump ground with the headlight off then test with headlight on.

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    I did that exact thing! Check out the full length video linked in the short. Thanks!

  • @joemmanraief8619
    @joemmanraief861912 күн бұрын

    That's crazy

  • @ScannerDanner

    @ScannerDanner

    11 күн бұрын

    Right? 😀

  • @steveguest8028
    @steveguest80285 ай бұрын

    Thats crazy

  • @joshuawalker5044
    @joshuawalker50445 ай бұрын

    What make would tie the fuel pump with lighting? Im gonna guess saab?

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    Grounds!

  • @brianb5779
    @brianb57795 ай бұрын

    You will have to post the scene of the crime

  • @77zrod46
    @77zrod465 ай бұрын

    Fuel pump getting power from lighting system😢😢😢😢

  • @franksgarage8551
    @franksgarage85515 ай бұрын

    Bad ground.

  • @mountainhopper9573
    @mountainhopper95735 ай бұрын

    Ground loop

  • @lamontbest1693
    @lamontbest16934 ай бұрын

    Bad ground

  • @catmandont100
    @catmandont1005 ай бұрын

    Expect a fire, with bad body grounds.

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    Incorrect

  • @pathlawncare744
    @pathlawncare7445 ай бұрын

    Strobing alternator with bad ground. Common Ford truck issue. Check all Body ground. You're welcome

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    Nope lol

  • @pathlawncare744

    @pathlawncare744

    5 ай бұрын

    @@ScannerDanner what's the year make and model?

  • @ScannerDanner

    @ScannerDanner

    5 ай бұрын

    ​@@pathlawncare744 full video is linked in this short

  • @mikeneitte212
    @mikeneitte2125 ай бұрын

    Hahahahq

  • @larryreno8293
    @larryreno82935 ай бұрын

    Shitty ground

  • @Brythecarguy302
    @Brythecarguy3025 ай бұрын

    Bad alternator or incorrect wiring

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