Question about 1999 Chevrolet Tahoe

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I have a 1999 Chevy Tahoe. Has approx. 178,000 on it. HAVING major engine issues. If it sits for any amt. of time and I get in it to drive it, 9 times out of 10 i will not have enough power to go. Once i get going, it works itself out.....but doesn't seem to get better. I have had the whole fuel assembly replaced in the fuel tank. I have dumped bottles of stuff in to 'clean' injectors. Just had all the injectors replaced. STILL DOES IT! ANY suggestions.

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You didn't mention the fuel pressure regulator. Is your check engine light on? faulty ignition coil? corrosion on plug wires? spark plugs fouled? crankshaft position sensor? Did it die all at once or slowly over time get sucky?

Posted on Aug 30, 2010

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  • tdmaub Aug 30, 2010

    fuel pressure regulator has been replaced.
    engine light comes on here and there, then goes off here and there with no significant change in the way the vehivle runs.
    spark plug wires and distributor new w/in last yr.

    it has deteriorated over time, i guess.
    there is no ryhme or reason as to when the check engine light comes on.

  • cheap repair Aug 30, 2010

  • cheap repair Aug 30, 2010

  • cheap repair Aug 31, 2010

    this may be a long shot but check the ground for the fuel pump.


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Put a pressure gauge on the fuel test port to find out if you have low fuel pressure. If you haven't checked the pressure regulator, that could be the problem.
If that doesn't help, connect to a code scanner to see if the computer has detected any faults.
Also, run a compression test; see about the general health of the engine.

Posted on Aug 30, 2010

  • tdmaub Aug 30, 2010

    Fuel pressure regulator has been replaced.
    When it is put on the computer. Most of the time, no codes come up.

  • tdmaub Aug 30, 2010

    Mass air flow sensor was the only code that appeared, but was functioning w/in the proper range.



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