Corvette C4 Forum 1984 through 1996

1992 unknow problem

Old Jan 12, 2008 | 08:22 PM
  #11  
mech259's Avatar
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Posts: 1,858
From: Lumberton, Texas
Default RE: 1992 unknow problem

Check your engine vacuum at idle, then raise the rpm to 2000 rpm and hold it. If the vacuum doesn't return to what it was at idle, then you have a restricted exhaust. (Catalytic converters)
 
Old Jan 13, 2008 | 12:42 PM
  #12  
frank j's Avatar
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Default RE: 1992 unknow problem

I have read your post ric i have a 92 and have experienced the same problem. you have4 areas that can cause the problem you described.
1 fuel
2 exhaust
3 electrical
4 your distributor

the distributor is a nortorius unit wich is very tempermantal in my opinion i would think and bet it is the non vented distributo that has you all messed up
 
Old Jan 14, 2008 | 09:05 AM
  #13  
LeesVette's Avatar
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Default RE: 1992 unknow problem

ORIGINAL: frank j

I have read your post ric i have a 92 and have experienced the same problem. you have4 areas that can cause the problem you described.
1 fuel
2 exhaust
3 electrical
4 your distributor

the distributor is a nortorius unit wich is very tempermantal in my opinion i would think and bet it is the non vented distributo that has you all messed up
If it was the optispark it would (at least it should)be throwing a code(s). Code 16 and/or 36 to be exact.
 
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