From rough idle to high idle - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 09-07-2004, 08:56 PM   #21
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

It would seem to agree with my assumptions earlier about the PCM fully closing the IAC when you turn the car off. Adjustment may not be necessary but correction of a mis-adjusted install may be
DrJay is offline   Reply With Quote
Old 09-07-2004, 09:04 PM   #22
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Western MA
Posts: 2,708
Thanks: 0
Thanked 1 Time in 1 Post
randman1 is on a distinguished road
Default

Quote:
Originally Posted by DrJay
It would seem to agree with my assumptions earlier about the PCM fully closing the IAC when you turn the car off. Adjustment may not be necessary but correction of a mis-adjusted install may be
Are you saying I butchered the install

I would think that the 28mm dimention is the depth of the IAC cavity. So basically, as long as it'* less than 28mm, it is ready to install. Or you eluding to an improperly seated O ring or other problem.
randman1 is offline   Reply With Quote
Old 09-07-2004, 09:08 PM   #23
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

Well I did notice that the o-ring was a little too easy to pull off on mine...Maybe pulling it, fully extending it, and double checking the o-ring is in order ?
DrJay is offline   Reply With Quote
Old 09-07-2004, 09:12 PM   #24
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2004
Location: Western MA
Posts: 2,708
Thanks: 0
Thanked 1 Time in 1 Post
randman1 is on a distinguished road
Default

Quote:
Originally Posted by DrJay
Well I did notice that the o-ring was a little too easy to pull off on mine...Maybe pulling it, fully extending it, and double checking the o-ring is in order ?
OK. I'll do that. One last thing. Is the TB "butterfly" supposed to be totally closed or damn near totally closed at idle? If I recall correctly, there was a small gap after it was cleaned.

Thanks for the input BTW
randman1 is offline   Reply With Quote
Old 09-07-2004, 09:18 PM   #25
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

Well I didn't notice any gap in mine at all..I'm sure since there is no REAL seal there there'* some air getting by...I'd say close it as much as possible, the IAC is capable of opening pretty far to adjust.
DrJay is offline   Reply With Quote
Old 09-07-2004, 09:20 PM   #26
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

Oh hey while you're at it you may get a "free mod"..I noticed when reinstalling my TB that the gasket hung over on the bottom. I took a knife to it and probably grabbed 1-2mm. Doesn't sound like a lot but it doesn't take much. Check it out
DrJay is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Idle Problem first, now high idle 98 Buick LeSabre Kimberly Buick 16 08-09-2015 09:41 PM
2000 silverado high /rough idle when cold big700 Chevrolet 16 12-02-2014 04:37 PM
High mileage, high repairs, you get what you pay for. jessie_harbin Lounge 10 12-06-2005 09:16 PM
High mileage = High value OLBlueEyesBonne General GM Chat 8 09-14-2004 10:25 AM
'00SSEi:rough idle,high idle...Please Help.... GTP2SSEi General GM Chat 2 07-29-2003 01:46 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:01 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.