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

put on your thinking caps

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Old Mar 22, 2002 | 10:40 PM
  #1  
RonsRed88's Avatar
RonsRed88
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From: Sumner WA
Default put on your thinking caps

I have a fairly common problem that I've seen posted several times. My 88 starts great when it's warm and after it's been sitting for a couple of days. But it takes about 6 seconds of cranking to start if it's been sitting for 20 minutes or more. I've tried the test for leaking fuel injectors without success so I don't think that's the problem. Here's another clue. I occassionally get a code 34 and when I do the car starts beautifully with less than a second of cranking. When I drive it with the check engine light on it kind of feels like there's a vacuum leak because when I let my foot off the gas slightly the engine compression slowing the car can be easily felt.

What do you think could cause these symptoms?
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Old Mar 22, 2002 | 11:06 PM
  #2  
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ittlfly
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From: Sun City West Az
Default Re: put on your thinking caps (RonsRed88)

Code 34 usually indicates a MAF sensor and or circuit. Check for vacuum leaks on the intake manifold. Then I would look at the sensor connection to the MAF and its' relays and finally replace the unit.
Hopes this helps.
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