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

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Old Aug 18, 2004 | 07:13 PM
  #1  
Don91Z07's Avatar
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Default Help please

i have a 91 vette an the car wont idle. It just dies. When ever you are on the gas it will run good. like nothing is wrong.It just dies every time it gets below 1000 rpm. this is my first vette so i am new to this. Also the service engine soon light does not come on when this happens. Please help
Thanks
Don
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Old Aug 18, 2004 | 07:22 PM
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The first thing I would do is inspect all the tubes and hoses connected to the vacuum system. I'd also check for intake leaks. Next, check out the injectors. Then plug in a Tech I Scan Tool and see what's going on. If you haven't already done so, buy yourself a set of Helms Sevice Manuals for your year Vette. It will have a good flow chart to find your problem.
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Old Aug 18, 2004 | 08:22 PM
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Check your throttle body and see how dirty it is. Also there could be a problem with your idle control valve.
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Old Aug 18, 2004 | 09:04 PM
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When I bought my vette, it barely idled... I did a full tuneup on it, and that worked wonders... i still have a slight vacuum leak somewhere that i hafta address, but maybe you could just start with a tuneup?
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Old Aug 19, 2004 | 05:12 AM
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From: Benoni Gauteng
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Have you tried giving your idle air control valve a good clean?
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Old Aug 19, 2004 | 07:55 AM
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Default Bad idle

After checking and following the above posts, you might want to check
the fuel filter. Probably hadn't been changed in years.
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