Transmission grumblings? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 01-12-2010, 01:58 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2007
Location: Victoria, B.C. Canada
Posts: 32
Thanked 0 Times in 0 Posts
backhoe is on a distinguished road
Default Transmission grumblings?

Hey guys, its been a while, but Bonnie has developed a new sound which is of concern to me because I think it is a transmission issue. Basically I started the car warm at the coffee shop, immediately there was a clicking type sound from under the car. The sound I have determined only happens when the car is in park, neutral, or in gear when adding about 200 RPM with the throttle. The other thing is that when I was troubleshooting the car was parked on a slight downhill, and managed to roll almost 1/4 turn. I get the feeling something is up with the parking pawl or the linkage, any help would be greatly appreciated. I have quit driving the car until i figure this out, and can't really justify big bucks fixes (tranny) but I LOVE THIS CAR!! Help!
backhoe is offline   Reply With Quote
Old 01-12-2010, 02:31 PM   #2
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

Does the clicking increase with the rpm?
BillBoost37 is offline   Reply With Quote
Old 01-12-2010, 04:03 PM   #3
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2007
Location: Victoria, B.C. Canada
Posts: 32
Thanked 0 Times in 0 Posts
backhoe is on a distinguished road
Default

The clicking is at its worst in P or D. When in gear it only clicks with very slight throttle input, and diminishes at higher RPM. The clicking also clicks with the speed of the motor, faster on high idle, slower when warm.....when in P or D.
backhoe is offline   Reply With Quote
Old 01-12-2010, 11:10 PM   #4
Senior Member
Posts like a Northstar
 
Join Date: Oct 2009
Location: Boston Mass
Posts: 684
Thanks: 0
Thanked 0 Times in 0 Posts
sgp358 is on a distinguished road
Default

Your reverse reaction drum is about to break! Once it does, you will have no upshifts and no reverse.

If you drop the pan, you may see little chunks of metal. It'* overhaul time.
sgp358 is offline   Reply With Quote
Old 01-14-2010, 10:45 PM   #5
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,649
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Reverse reaction drum....for those that are curious and would like to know what it looks like.



And if you want to see more of the 4T60-E...
https://www.gmforum.com/general-gm-chat-88/transmission-pics-those-want-them-updated-239395/
Mike is offline   Reply With Quote
Old 01-14-2010, 11:11 PM   #6
Senior Member
Posts like a Northstar
 
Join Date: Oct 2009
Location: Boston Mass
Posts: 684
Thanks: 0
Thanked 0 Times in 0 Posts
sgp358 is on a distinguished road
Default

We "lovingly" refer to it as a Stovepipe.

Can you post a picture of a bad one? I don't have one or I would.
sgp358 is offline   Reply With Quote
Old 01-15-2010, 08:12 AM   #7
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,649
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Gimme a few more hundred miles, I'm almost due for another swap out.
Mike is offline   Reply With Quote
Old 01-17-2010, 02:58 PM   #8
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2007
Location: Victoria, B.C. Canada
Posts: 32
Thanked 0 Times in 0 Posts
backhoe is on a distinguished road
Default

Hey guys, been busy last couple of days, thanks for the info so far. I am now convinced my detent cable may be the culprit, any tips on removal/install?
backhoe is offline   Reply With Quote
Old 01-18-2010, 09:34 PM   #9
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,649
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

You mean the actuator inside the trans that controls the parking pawl? Gonna have to let the trans out a little bit to pull the side pan off.
Mike is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Another day in Transmission land... complinitor 1992-1999 3 09-07-2002 10:41 PM
transmission cooler highly recommended :) Greg 1992-1999 7 08-31-2002 02:16 AM
Changing the Transmission Fluid csprague 1992-1999 1 08-01-2002 12:18 AM
Transmission "FLOW" Diagrams DeathRat Performance, Brainstorming & Tuning 4 06-12-2002 09:24 AM
Transmission Trouble Kressdog 1992-1999 24 12-31-1969 08:00 PM


Tags
actuator, parking pawl, transmission problems

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 08:55 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.