CHEVROLET TAHOE ENGINE PROBLEM
1999 Chevrolet Tahoe • 149 miles
5.7L stumbles on accelleration when outside temprature is below approx 70 degrees, every known sensor replaced, Chevy Dealership did a complete check. Problem is not always evident. Starts up right away, cold and idles fine, engine revs up with no hesitation, except for once in a while when it's cold outside. I'm having to feather the accellator just short of the stumble and if I just about floor it, the engine wants to stall until I back off the throttle to regain fuel. Mechanics drained tank, checked pump (a-ok) and fuel pressure was about 60%. Could it be the Fuel Pressure Regulator? Thanks. This might be my last repair option, I have spent over $1,500 chasing this problem for a year. Summer time it was running absolutely great!
January 3, 2013.
January 3, 2013.
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