- classifieds - forums

Go Back Forums > Models > Saturn S-Series > S-Series Tech

Thread Tools Display Modes
Old 06-04-2008, 02:37 AM   #1
New Member
pbarosso is on a distinguished road
pbarosso's Avatar
Join Date: May 2008
Location: central california
Posts: 3

1997 SW2
Default high-ish idle, revs drop slowly between shifts

ok i know there are other threads with similar problems, but in my opinion they arent as detailed as id like.

1997 sw2
5 spd
111000 miles
spark plugs new
wires good.

my problem is:

high-ish idle, about 1300 rpm when cold and 900-1000 when warm. coolant temp never goes above the 1/4 way mark on the temp guage even on the warmer days. albeit there havent been many hot days yet in the central valley of california.

now when i am driving i am driving for gas mileage so i shift earlier to avoid winding the engine up. shifts normally come around 1800 rpms. the acceleration is never hard even when getting on the freeway.

what happens is when i clutch in/throttle off, there is a slight blip in the throttle, revving perhaps a couple hundred rpms before dropping, and dropping slowly. even when i take my foot off the gas a couple of seconds before pressing the clutch the motor still surge a couple hundred rpms.

this is opposed to the normal result of immediate rpm drops when stepping on the clutch and off the gas.

i have seen possible leaky intake manifolds to tps to dirty maf sensor. the maf sensor must be located further up inside the intake because i cant see it, but i can see that there is alot of soot or carbon inside the throttle body. in my 94 convertible the maf was infront of the throttle body.

any different ideas?
pbarosso is offline   Reply With Quote Sponsored Links
Old 06-04-2008, 02:52 AM   #2
Super Member
madpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud ofmadpogue has much to be proud of
Join Date: Sep 2004
Location: Madison, WI USA
Posts: 25,714

1996 SW2
Default Re: high-ish idle, revs drop slowly between shifts

Temp gauge and idle are probably both due to a bad ECTS. Visit our How-To Library; the first couple of "sticky" posts cover this subject.

The PCM is programmed to drop the engine speed gradually when you push in the clutch. It shouldn't go up at all, but again, this could be the ECTS.

There is no MAF sensor.
madpogue is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2002 l200 high idle revs tom_foolery L-Series Tech 2 06-13-2009 11:10 PM
Idle issue, dies when cold, revs high when warm 93sc2OHguy S-Series Tech 4 12-13-2007 01:24 PM
1995 sc2 automatic...revs before it shifts justcarrie S-Series Tech 13 07-16-2007 07:11 PM
Motor revs. up high BORacing S-Series Tech 7 01-14-2007 03:36 PM
Temp slowly rises when idle JasonRW S-Series Tech 11 02-11-2005 10:04 PM

All times are GMT -4. The time now is 03:08 AM.

Advanced Forum Search | Advanced Photo Search

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc. The Saturn Enthusiasts Site.