wierd RPMs - 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.

Thread Tools Search this Thread
Old 11-29-2007, 07:14 AM   #1
Senior Member
Posts like a 4 Banger
Thread Starter
Join Date: Jul 2007
Location: Rochester, NY 14609
Posts: 137
Thanks: 0
Thanked 0 Times in 0 Posts
Sleeper93 is on a distinguished road
Default wierd RPMs

a little while ago, i started my car from not being started the day before. i know for a fact that when the engine is cold from the weather outside, when i first start it, the RPMs rest at about 1500 but when it finally warms up, it drops back down to about 900 idle.now my confusion on the subject is that one morning after that, i was in a hurry to get to work and i just cranked it up and left. as i was driving i noticed the RPMs never dropped from 1500 they actually rose to about 2000 and stayed there even while i was stopped at the light, and when i pulled over and parked it to check about it, the RPMs then rose to about 3500 without me being on the gas. 15 mins later the RPMs dropped to thier normal range but when they did, the Check Engine Soon light came on. anybody think they might have a clue to what the problem might be? Thanks, Rome
Sleeper93 is offline   Reply With Quote
Old 11-29-2007, 07:15 AM   #2
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road

TPS Failure

Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 11-29-2007, 12:21 PM   #3
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

Could very well be the TPS, but the IAC could too. I'd pull codes if I were you. Being a 93, you can do it with a paperclip. The procedure is in Techinfo.
willwren is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Rpms lower than usual Glasuan 1992-1999 4 12-17-2003 05:11 AM
dunk dunk dunk @ 625ish RPMs delta8t8 1987-1991 10 11-03-2003 01:03 AM
RPMs dropping at 50-70 MPH 74747474 1992-1999 10 10-06-2003 11:49 PM
RPMS junkman 1987-1991 28 05-18-2003 06:24 PM
RPMs "quivering" Daron97SSE 1992-1999 10 11-15-2002 10:08 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 08:51 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.