1985 Chevy Corvette rough idle

Tiny
RICK EVERETT
  • MEMBER
  • 1985 CHEVROLET CORVETTE
  • V8
  • 2WD
  • AUTOMATIC
  • 105,000 MILES
Hi Guys, I just rebuilt the 350 in the vette and as far as I can tell every thing is hooked up and operating corectly the problem is the rough idle and wanting to die, bring up the r's and it smoothes out where should I start. Keeping in mind that the ECM probably has a thousand codes set from being disconnected and timing being messed with etc, etc. What do you think? Thank you Rick
Sunday, February 3rd, 2008 AT 4:28 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,386 POSTS
Since you say you just rebuilt it, I would check the gaskets for starters, check the EGR valve and gaskets since you probably took that off, and most importantly make sure everything is tight.

To check for vaccum/gasket leak take a can of carb cleaner or starting fluid and slowly spray each gasket, metal metal mating surfaces and vaccum lines, if idle changes you found a leak.

Maybe you have a faulty IAC module.
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Sunday, February 3rd, 2008 AT 6:43 PM

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