LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Idle very high

Old Dec 19, 2005 | 05:12 PM
  #1  
pHEnomIC's Avatar
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Posts: 1,388
From: SE Michigan
Idle very high

I recently replaced my iac valve, but anyways within the past week i had a big coolant leak that has been fixed, now my idle is super high. 1500 in neutral or park. It drops a little when in drive to about 1000. I am not getting any ses lights so i assume everything is still plugged in.

What do you think is wrong, was it a moisture problem. My opti got a little wet but its not missfiring at all. I would assume that the tps and iac valve got wet. What should i try to do?
Old Dec 19, 2005 | 06:04 PM
  #2  
red 95 z28 lt1's Avatar
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Joined: Apr 2003
Posts: 664
From: long island N.Y.
Re: Idle very high

check for vacume leaks and put a scanner on it and read all the sensors and make sure they are within there limits, you may have a hidden code, also check tps sensor i had a simmilar problem with the idle and it was the tps sensor
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