Question about 1999 Chevrolet Silverado 1500

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Got a '99 with a 5.7L that seems to run good. I have plenty of power on take off and from part throttle. Problem is, when i get right around cruising speed (50-60mph) I can feel a slight miss or sputter. I can press on the gas, and it goes away. When i stop accelerating and hold the speed constant, I can feel it again. I have recently put a fuel pump and filter in, so i don't think thats the problem. I've also recently put on plugs, wires, and distributor cap. Its not showing any codes. Any suggestions?

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Check your vacuum lines you may have air leak somewhere

Posted on May 19, 2011

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