C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

low idle problem 92

Old Nov 13, 2003 | 03:10 PM
  #1  
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From: Amberg, Germany
Default low idle problem 92

i still have the low idle problem. it´s just after warm up not with cold engine.
during warm up the idle is higher (up to 1100), quite normal, but after warm up the idle drops too low, an the engine stumbles. in N or P it´s normal, but not in D or OD at a stop light.
maybe there is a probelm with the opti that is not noticeable during the warm up.
iac is new.

:confused: :confused:
thanks frank
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Old Nov 13, 2003 | 04:30 PM
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Default Re: low idle problem 92 (Frank92)

Have you cleaned your TB? I had an idle problem before and cleaning the TB helped.
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Old Nov 13, 2003 | 05:15 PM
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Default Re: low idle problem 92 (Frank92)

i changed my opti pt a vented one in
changed my egr and solenoid it still does it a bit sounds like it is pppppoping or slight misfire but when I kick it goes and sounds good at high rpm

gonna change my o2 and knock sensors

mfox5@cogeco.ca
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Old Nov 15, 2003 | 08:03 AM
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Frank92
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Default Re: low idle problem 92 (Frank92)

i´ll also clean the tb first and see if it´s better.
i thought it´s not necessary cause it´s not so much dirty. the butterflies are a little bit black an the wholes to the iac ... must probably be also clean.

I´ll change the o2 sensor also, 100 k miles are enough.

thanks frank
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