SaturnFans.com
what's new (beta) - classifieds - forums - photos


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Tech
Register FAQ Members List Groups Calendar Chat Room Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 04-12-2008, 02:25 AM   #1
joffer
New Member
joffer is on a distinguished road
 
Join Date: Apr 2008
Posts: 3
Dazed 1997 SL revs up, but auto-transmission will not change gears

I have a 1997 SL that revs up, but will not change gears. When this happens, I cannot get a gear that will go faster than 20-30 mph. This does not happen all of the time. I have noticed that the water temp increases before this happens. Oddly enough, if I let the car cool down a little, it shifts normally again. What can cause this to happen??

Exactly what happens when the ECTS is bad?

REWARD EXCELLENCE!

Add to joffer's Reputation
Rate the quality of this post and help joffer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
joffer is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 04-12-2008, 08:51 AM   #2
fdryer
Super Member
fdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant futurefdryer has a brilliant future
 
fdryer's Avatar
 
Join Date: Jan 2006
Location: NYC
Posts: 29,255
 

2003 L-Series 3.0L Sedan
Default Re: 1997 SL revs up, but auto-transmission will not change gears

You're describing very strange symptoms that are either two separate issues or possibly one issue creating another. You'll need to answer some basic questions unless other members have a better idea and can assist quicker.

1-Does your car start cold and idle at 1200 rpm, gradually lowering back to 800-900 rpm after 10 minutes or so of driving? If it does, there may be a transmission problem. If your engine doesn't fit this normal start-up sequence then you'll need to know about the engine coolant temperature sensor (ECTS).

The original coolant sensor has a tendency to crack and keeps a higher idle with rich mixtures, sometimes a very high idle. This becomes a major driveability issue that may also affect the transmission shifting correctly. Look in the How-to Tips first two posts covering the two-wire sensor and connector, pictures and procedures included. It may also be a good time to clean the throttle body of crud build-up using throttle cleaner.

2-After checking and/or replacing the coolant sensor you may want to replace the thermostat if the temperature gauge never goes above the 1/4 mark. A stuck thermostat compounds a coolant sensor problem with either overheating or little to no heat for the heater coil during winter months.

Depending on the mileage, it may help to consider changing the transmission oil and filter if the fluid color has darkened from original, suggesting components cooking within.

...
*The CPS is the heart of the entire EFI system. No cps = dead EFI system*
*There's more to a/c than just a few cans of refrigerant*
*There's more to brakes than just replacing parts*

REWARD EXCELLENCE!

Add to fdryer's Reputation
Rate the quality of this post and help fdryer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
fdryer is offline   Reply With Quote
Reply



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
Cleaned TB, now 96 SL2 revs btwn gears and P0133 saturnkimberly S-Series Tech 2 12-17-2008 11:40 PM
My 96 SL revs high when you shift it into higher gears paumcd S-Series General 6 03-22-2007 03:51 PM
L Series Auto transmission fluid change greasynails L-Series Tech 19 05-26-2004 09:49 AM
Auto transmission fluid change north.side S-Series Tech 4 07-09-2003 12:59 PM
1993 SL1 5speed transmission hard to change gears FissionMan S-Series Tech 9 02-16-2003 02:49 PM


All times are GMT -5. The time now is 06:25 AM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SaturnFans.com. The Saturn Enthusiasts Site.