Occasional rough(ish) start normal? - 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 04-13-2004, 11:25 AM   #1
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Apr 2004
Location: Land of Lincoln
Posts: 1,107
Thanked 5 Times in 4 Posts
scottydl is on a distinguished road
Default Occasional rough(ish) start normal?

Normally when I fire up my 1998 SLE, it turns over and starts just fine... idles smooth as silk right away at 1000 RPM or so. But occasionally (maybe 1 out of every 5-6 starts), it sputters a little bit at 500 RPM and revs itself to ~2000 RPM before smoothing out like normal. The upset never lasts more than a second or two, but it is definitely noticeable. Is this normal? Anything I should check or do right away? TIA!
scottydl is offline   Reply With Quote
Old 04-13-2004, 11:56 AM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

You may be seeing the first clue that you need to clean your TB and IAC valve.
willwren is offline   Reply With Quote
Old 04-16-2004, 02:01 AM   #3
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Apr 2004
Location: Land of Lincoln
Posts: 1,107
Thanked 5 Times in 4 Posts
scottydl is on a distinguished road
Default

Alrighty... any easy way to explain how to do that? Or can you (or anyone) recommend the best repair manual? I suppose that would be a good investment at this point!
scottydl is offline   Reply With Quote
Old 04-16-2004, 08:51 AM   #4
Senior Member
True Car Nut
 
Join Date: Dec 2003
Location: Corn Fields, IN
Posts: 2,766
Thanks: 0
Thanked 0 Times in 0 Posts
John Deere Boy is on a distinguished road
Default

http://www.geocities.com/rivierareso...ecleaning.html

i disagree with some of the steps though....i'd take the MAF sensor out after getting the throttlebody off of the car. You should also remove the IAC motor and the TPS. it might take a lot of scrubbing to clean the idle air passageway
John Deere Boy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
occasional no start 3800fan Everything Electrical & Electronic 1 12-12-2010 03:34 PM
No Start/Rough Start mblaze Bonneville GXP/ Northstar Powered Cars 1 05-20-2010 10:18 PM
1996 SE starts rough, eventually revs than goes to normal DeeMutz 1992-1999 13 06-09-2007 11:31 PM
Occasional 22 padgett 1987-1991 3 03-12-2005 03:02 PM
Rough start and then no start maxdadog 1992-1999 4 01-07-2004 10:18 AM


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 01:21 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.