Question - Transmission Problem? - 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 02-15-2007, 10:48 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jul 2006
Location: McMinnville, Oregon
Posts: 486
Thanks: 0
Thanked 0 Times in 0 Posts
EK98 is on a distinguished road
Default Question - Transmission Problem?

Okay, I don't know much about transmissions and I tried searching for any topics on this but I didn't know exactly what to look for.

Lately it seems like a lot of the time while driving my transmission will stay in too high of gear. Whenever I want to accelerate I press on the gas and there is just no power. When I press down hard it will down shift and then I have lots of power while accelerating but once I let my foot back off the pedal it shifts back up into too high of gear.

I do a lot of highway traveling so I took note of the rpms at various speeds. At 55 Mph the rpms were 1500-1600. At 65 Mph they get up to 2000. I can't remember 75 mph exactly but it seems to be in the 2400-2600 range.

This problem is obviously really annoying to drive with. Any ideas what this could be? Please don't say my tranny is dying... although it probably is :(
EK98 is offline   Reply With Quote
Old 02-15-2007, 11:31 PM   #2
Member
Posts like a V-Tak
 
Join Date: Oct 2006
Location: jenison, mi
Posts: 50
Thanks: 0
Thanked 0 Times in 0 Posts
dogman4585 is on a distinguished road
Default

what is your trans fluid color and how full is it and when you check it. your car should be running and wormed up to do so. the color should be red if it is like crappy brownish red change the fluid.. and put new in it
dogman4585 is offline   Reply With Quote
Old 02-16-2007, 01:45 AM   #3
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jul 2006
Location: McMinnville, Oregon
Posts: 486
Thanks: 0
Thanked 0 Times in 0 Posts
EK98 is on a distinguished road
Default

I'll have to do that this weekend. I have no idea how to check it however
EK98 is offline   Reply With Quote
Old 02-16-2007, 02:19 AM   #4
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

After the transmission if fully warmed up, with the transmission in neutral, and engine running, pull the dipstick that is back by the firewall and has a red top to it. Look at the condition of the tranny fluid, as well as the smell. Does it smell burned? Wipe off the dipstick, and note if there is a fair amount of black that is left behind on the rag, along with the tranny fluid. Put the dipstick back in, then pull it back out. What level is it on the dipstick?

Are you having any other issues? It could be as simple as a bad throttle position sensor.
Archon is offline   Reply With Quote
Old 02-16-2007, 06:50 AM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Eric, double check the vacuum line going to the modulator on the front of the transmission. Also to check would be your TPS voltages, they are key in shifting.
BillBoost37 is offline   Reply With Quote
Old 02-16-2007, 09:34 AM   #6
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Your speeds/RPM relations aren't that far off from mine. Here'* what mine are with a 3.06 gear ratio:

70 MPH = 2,000 RPMs
80 MPH = 2,500 RPMs

174K is a lot of miles for our trannies. It makes me wonder if your torque convertor is slipping when locked up. That could be caused from having a low fluid level. As advised, check it.

I get a fair amount of slip between 1-2 and 2-3....and I'm at 166K.
vital49 is offline   Reply With Quote
Old 02-17-2007, 10:10 PM   #7
Member
Posts like a V-Tak
 
Join Date: Oct 2006
Location: jenison, mi
Posts: 50
Thanks: 0
Thanked 0 Times in 0 Posts
dogman4585 is on a distinguished road
Default

so what is the news good or bad
dogman4585 is offline   Reply With Quote
Old 02-17-2007, 10:16 PM   #8
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

Quote:
Originally Posted by BillBoost37
Eric, double check the vacuum line going to the modulator on the front of the transmission. Also to check would be your TPS voltages, they are key in shifting.
He has a 98. No vacuum line or modulator.
willwren is offline   Reply With Quote
Old 02-18-2007, 04:26 AM   #9
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jul 2006
Location: McMinnville, Oregon
Posts: 486
Thanks: 0
Thanked 0 Times in 0 Posts
EK98 is on a distinguished road
Default

gonna check the fluid tomorrow, I was way too busy today.
EK98 is offline   Reply With Quote
Old 02-18-2007, 11:51 AM   #10
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

Make sure you 'stir' it up a bit by starting the car and going through all the gears with your foot on the brake. Spend about 10 seconds or so in each gear, and got up and back twice. Then check it while in park and idling.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
I have a problem with automatic transmission. driver 1987-1991 7 06-09-2004 04:23 AM
'93 transmission problem Haywood 1992-1999 2 05-21-2004 02:54 PM
transmission problem fenderman 1992-1999 6 03-25-2004 05:36 PM
Transmission problem Kennginn 1992-1999 20 02-25-2004 07:16 PM
Common Transmission Problem? Luke Greffen 1992-1999 5 03-02-2003 01:22 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 04:56 AM.


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.