88 Silverado running rough!
October 19th, 2011, 5:38 PM
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88 Silverado running rough!
New to the site so here is my first question. I have an 88 Silverado 4x4 with a 5.7 liter. I just replaced the engine with a factory crate engine from the dealership. New distributor, coil, wires, plugs, EGR, Water pump, and numerous sensors as well. When starting th truck first thing in the morning it doesn't run smooth. It acts like an old manual choke that hasn't been choked to run. Once it runs for a little while the engine smooths out some but still not correct. I have had it in the shop several times but noone can seem to find the right problem. Any ideas?
October 19th, 2011, 6:57 PM
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October 19th, 2011, 8:58 PM
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I did smell gas the other day when driving. I didn't think much of it cause I always carry a jug of gas in the back JIC!! It stumbles at stop lights, and while waiting in the drive thru, but as long as I keep my foot on the gas just a little it idles OK. Thanks for the info. I will check it out ASAP. I do have the Haynes book so I should be good from here. Should I worry about holming it out or should I just replace it?
October 20th, 2011, 6:27 AM
#6
I did smell gas the other day when driving. I didn't think much of it cause I always carry a jug of gas in the back JIC!! It stumbles at stop lights, and while waiting in the drive thru, but as long as I keep my foot on the gas just a little it idles OK. Thanks for the info. I will check it out ASAP. I do have the Haynes book so I should be good from here. Should I worry about holming it out or should I just replace it?
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October 20th, 2011, 7:10 AM
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Thanks guys I will get to this this weekend hopefully. I work 10 hour shifts and get a company vehicle to drive to work so not a necessity till Monday!! Looks like an easy swap according to the Haynes book I have.
October 20th, 2011, 5:57 PM
#10
very simple. shouldn't take more than 5, maybe ten minutes. unplug connector, loosen old iac, remove, replace, replug. done. the new idle air valve should come with a flat oring gasket. USE IT!! i've seen people lose their minds trying to figure out vacuum leaks only to find out that one little gasket would have prevented problems.