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

hard starting

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Old Nov 15, 2003 | 06:15 PM
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Default hard starting

My 90 L98 is hard to start ya got to keep your foot on the gas pedal to start it. Also after it starts when you take your foot off the gas pedal it won't idle it stalls right away ANY SUGGESTIONS? THANKS GUYS :confused:
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Old Nov 15, 2003 | 08:13 PM
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Default Re: hard starting (pipe)

I would peobably look at Idle Air Control valve. Pressure on throttle opens the butterflies a little (or a lot) to let air in. This is a function normally handled by the Idle Air Control system.

:seeya
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Old Nov 15, 2003 | 10:39 PM
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Default Re: hard starting (pipe)

Here's your dupe
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Old Nov 15, 2003 | 10:43 PM
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Default Re: hard starting (jackdaroofer)

Is the IAC adjustable or do you just have to buy a new one?
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Old Nov 15, 2003 | 10:50 PM
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Default Re: hard starting (pipe)

Is the IAC adjustable or do you just have to buy a new one?
It is cleanable and adjustable..suggest you invest some$$ in a Helms manual if you aregoing to be doing work yourself!

Chilton's is good, if they have pics, but Helms is better

:seeya
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Old Nov 16, 2003 | 12:10 AM
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Default Re: hard starting (pipe)

my 84 has a prob starting too when it sits more then 2 days. it has the same prob you do so when it turns over i just give it a little gun and hold it about 15k and wait for it to run by it self works like a charm


try to clean the iac like jack said
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