Question about 1999 Chevrolet Silverado 1500
My truck will idle smooth but upon any acceleration it stumbles, kinda just cuts out and doesnt want to go. Ive changed the cap, rotor, plugs, fuel filter and fuel pump relay and neither seem to have helped. Sometimes it wont start, just crank and crank and then if you wait a bit it will fire right up, then when you turn it off it wont start again. I can hear the fuel pump with the key in the on position, seems to be louder than normal. the service engine light has just come on, and then it ran fine for a couple miles and went off then started running poorly again.
Fuel pump is most likely the cause. Probably just barely making the required pressure to start. Needs to maintain 60-66 psi while cranking to start.
Posted on Dec 21, 2008
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Posted on Jan 02, 2017
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