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istter1 installing new IAC on 87
Elite Guru
Bakersfield Ca
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Vehicle hard starting unless warmed up. Reset IAC worked a little better. I know it is in the manuel. But the site seems very slow on conversation lately. Do i reset computer after installing new iac?
Posted on: 2016/12/30 18:26
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CorvetteBob Re: installing new IAC on 87
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If you've already gone thru the procedure to reset the IAC, then it certainly won't hurt to allow the computer to go back to its default startup settings.
Besides, it doesn't cost anything to try.
Posted on: 2016/12/30 20:34
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istter1 Re: installing new IAC on 87
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Bakersfield Ca
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cool
Posted on: 2016/12/31 5:18
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Matatk Re: installing new IAC on 87
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SW Chicago Burbs
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Did you try cleaning the IAC and TB before replacing anything? I'd try that and then the base idle relearn.
Posted on: 2017/1/1 13:38
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1989 Corvette...RIP
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istter1 Re: installing new IAC on 87
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Bakersfield Ca
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Quote:

Matatk wrote:
Did you try cleaning the IAC and TB before replacing anything? I'd try that and then the base idle relearn.


I did all that. Had minor improvement.
Ordered IAC went to install it and found my son had borrowed my deepset 33mm socket. Got in vet to borrow my socket back. Engine fires right up. All day yesterday fired right up. So now it is a wait and see. So for now the new iac is in my parts rack.
Posted on: 2017/1/1 16:50
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Matatk Re: installing new IAC on 87
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Might be unrelated to IAC. Something to consider.
Posted on: 2017/1/1 17:13
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc.
1989 Corvette...RIP
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istter1 Re: installing new IAC on 87
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Bakersfield Ca
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i agree with you
Posted on: 2017/1/1 18:08
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Matatk Re: installing new IAC on 87
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Several things can cause hard starts. Is it a long cranking time? What are the symptoms?
Posted on: 2017/1/1 19:10
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1989 Corvette...RIP
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istter1 Re: installing new IAC on 87
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Bakersfield Ca
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like it isnt getting gas.about 10 to 15 sec usually starts on 3rd crank
Posted on: 2017/1/1 22:57
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Matatk Re: installing new IAC on 87
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Have you tested fuel pressure?
Posted on: 2017/1/4 0:07
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1989 Corvette...RIP
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istter1 Re: installing new IAC on 87
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Bakersfield Ca
2336 Posts
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done that
Posted on: 2017/1/4 15:29
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Matatk Re: installing new IAC on 87
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SW Chicago Burbs
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You've done that recently or checked it while the problem occured? What is the fuel pressure prior to and during cranking?
Posted on: 2017/1/5 2:38
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1989 Corvette...RIP
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