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Thread: pateince are running out, please help....

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  1. #1
    Registered User persanod's Avatar
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    Aug 2012
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    pateince are running out, please help....

    my 2000 4.3 idles good now but when i give alot of gas it falls on its face...

  2. #2
    Senior Member blazinmt's Avatar
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    Mar 2004
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    great falls MT
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    clogged cat?
    8================D

  3. #3
    My avalanche,totaled 8( POSblazer's Avatar
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    Jun 2005
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    Pensa~cola,Fl.
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    Maybe a bad fuel pump. It may provide enough fuel at idle, but not enough under acceleration. May want to change the fuel filter while you're at it.
    Update:My avalanche was totaled by my ex-gf. My business is in ruins. I now plan on finishing the engine repairs to my Saturn, and sell it. Once I get the bills paid off, I'm going to fix my Blazer.
    History:I bought a 2001 saturn sc2, then a 2005 avanche 1500 2wd, then a '87 S10 blazer 2dr 2wd on 07/24/2010, and on 04/01/2011 a '84 s10 blazer 2dr 2wd V8 drag racer(sort of)

  4. #4
    Registered User persanod's Avatar
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    ive cut out the cat this morning so i guess i'll change out the fuel pump... dammit.

  5. #5
    I'm BATMAN! Harley's Avatar
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    Diagnosing the issue is your friend. I've learned that more times than I'd care to admit.

    Have you checked the air filter? Any engine codes?

    Before changing the fuel pump at the least change out the fuel filter, but I suggest measuring the fuel pressure before either. Most auto stores should let you borrow the gauge with a refundable deposit. Pump should put out 60-65 psi and the system shouldn't drop more than 5 psi for 10 minutes after the pump shuts off.
    Black 'n Tanazer, Long Bed, Coupe Quattro, Old Caddy, Old Rice

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