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

low idle issue cant figure it out

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Old Aug 29, 2005 | 07:54 PM
  #1  
snakethis69's Avatar
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From: Beaufort SC
low idle issue cant figure it out

well i have everything in the sig and cannot for the life of me get the idle to raise to the 900 mark. always wants to stay at 500. wat could be the cause? i took the EGR AND AIR out btw. but i double checked all the vacuums with shoeboxs website and when i first start the car the idle raises to 2000 and then dies to500-600. i cant figure it out. i am gonna try some tighter fittings for the pressure regulator tomm hope that is gonna help me out. it drives fabulous other then that. the low idle really eisnt that big a deal its just annoyying to sit at a light and hear it chug and smell bad.
Old Aug 29, 2005 | 09:00 PM
  #2  
valter's Avatar
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From: Leesburg, VA
Re: low idle issue cant figure it out

It can be IAC valve. Try removing it and cleaning with carb cleaner.
Old Aug 29, 2005 | 09:03 PM
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Re: low idle issue cant figure it out

try cracking the throttle blades open a little it helped mine.
Old Aug 30, 2005 | 09:55 AM
  #4  
snakethis69's Avatar
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Re: low idle issue cant figure it out

i cleaned a buncha **** outta the IAC and it still runs like crap. sucks plenty of air i am pretty sure the rockers are right but would a misaligned rocker cause this? but then make it run good otherwise?

Last edited by snakethis69; Aug 30, 2005 at 10:17 AM.
Old Aug 30, 2005 | 10:19 AM
  #5  
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Re: low idle issue cant figure it out

what kind of screw head is the idle screw?
Old Aug 30, 2005 | 04:47 PM
  #6  
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Re: low idle issue cant figure it out

ttt
Old Aug 30, 2005 | 05:32 PM
  #7  
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Re: low idle issue cant figure it out

update : took the intake apart and found the MAF was 29% covered in gunk. cleaned it off and getting ready to take her for a spin to see if that helped.
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