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Topic: Starts but don't idle

in Forum: C4 Engines

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Starts but don't idle

Posted: 12/1/14 1:21am Message 1 of 4
BillyDee
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Joined: 8/9/2012
Posts: 51
Vette(s): 1990 convertible corvette,owned 1 year
  Hi All,I have a 1990 convertible that starts but will not idle. The car starts great and i can keep it running by pushing the gas peddle but as soon  as i let go the car dies. Any ideas on this and the car has just up and started doing this no prior incidents leads up to this. It probably does need a tune up and i have put a new distributor cap on but im just looking for some suggestions. Whats a good spark plug for these corvette with aluminum heads...Thanks for any info.


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Re: Starts but don't idle

Posted: 12/1/14 8:49pm Message 2 of 4
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Adams' Apple
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Duncanville, TX - USA
Joined: 3/18/2009
Posts: 2246
Vette(s): 1985 Coupe-L98/Auto,Bright Red/Carmine. 1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.
Kinda sounds like you may need to clean the throttle body, or there may be a vacuum leak somewhere. Could also be the idle air control valve. Need a little more info. Have you tried scanning it for codes?
Did you change the dist cap before or after this started happening?


|UPDATED|12/1/2014 8:49:41 PM (AZT)|/UPDATED|



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Re: Starts but don't idle

Posted: 12/3/14 9:34am Message 3 of 4
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TwoCorvettes
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Garland, TX - USA
Joined: 1/1/2013
Posts: 37
Vette(s): I have a 1991 Artic White, Red Interior convertible, 30,000 miles on it, & a 1993 40th Anniversary with 50,000 miles on it
If equipped with an " Optispack "located in the distributor , that is what happened to my '91


Re: Starts but don't idle

Posted: 12/3/14 4:29pm Message 4 of 4
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93pologreen
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Blacksburg, VA - USA
Joined: 4/4/2011
Posts: 7
Vette(s): *1990 ZR-1 black on black #0543 *1993 Coupe pologreen LT1 6 spd *1993 Conv red LT1 6 spd *1980 Coupe red L82
TwoCorvettes said: If equipped with an " Optispack "located in the distributor , that is what happened to my '91


Opti-spark distributors were used on LT1 engines which started in 1992.   L98s used standard distributors.


in Forum: C4 Engines


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