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Montefreak71
New User
Dec 11, 2011, 2:51 PM
Post #1 of 2
(1190 views)
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Hi, I have a 1990 Chevrolet Suburban with a 350, about 250,000 miles. It has a very strong motor, but I've had some issues with it running bad. When I push on the gas it runs as if it is runnig out of gas or the gas flow stops, but if I let up on the gas pedal the then takes off. If I depress the pedal at any time I get the same result. This happens running cold or warm, but much worse when cold. I have done a lot of work trying to solve the problem,but nothing seems to work. I have tuned up the Throttle Body, installed new Injectors, installed Idle C.ontrol Module, Fuel Lines and Filter. I've also done complete tune up. Any Ideas of what the problem may be?
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 11, 2011, 3:01 PM
Post #2 of 2
(1168 views)
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Two things come to mind with those symptoms, low fuel pressure or bad coil/coil wire. I'd start out with a fuel pressure gauge. 9 to 13 PSI at all times.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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