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Tahoe wont start P0141

The Tahoe died yesterday while driving and though the engine will crank and it has gas it will not turn over. Error code is P0141 but all available posts indicate that will not stop it from starting. Any ideas?

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  • thehathawaym
    thehathawaym Feb 08, 2012

    More info. The o2 sensor has been replaced. The fuel pump is working, the fuel filter has been replaced. I removed the air filter and sprayed engine starter directly into the intake and the engine started long enough to burn off the starter. It's clear that this is a fuel issue but are there other parts that are related to the system that I have not investigated. I have not tested the fuel pressure from the pump so it is possible that the pump is actually the culprit but I'm more inclined to think it's a clog or a sensor somewhere that I am unaware of. Thanks for your help.

  • thehathawaym
    thehathawaym Feb 09, 2012

    Answered my own question: fuel pump. It does indeed work, however the pressure shows about 10 instead of around 60+. I rented a pressure gauge from AutoZone and removed the intake cover from the engine (it's not hard) to locate the Schrader valve that is under and behind all that plastic business. Once located, I installed the gauge just like a bicycle pump and turned on the ignition several times cycling the fuel pump until it would move the pressure needle no further. Easy and obvious.
    I say obvious because there are so many answers on the internet that tell you this or that could be wrong. Several questioned the idea behind a weak pump, instead saying if I could "hear" the unit working then move past the test stage and start looking for blocks. This forum did not indicate that I would like to point out and it appears that the answers given here are factual. Having said that however, it is clear that what you read on the internet can be helpful, however "trust but verify" should still be in your mind. I hope this helps you and I wish you the best of luck fixing your ride.



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Posted on Feb 09, 2012


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