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.

Trans cooler solves TC lockup problem

Thread Tools
 
Search this Thread
 
Old 08-02-2006, 03:41 PM
  #1  
Senior Member
True Car Nut
Thread Starter
 
bill buttermore's Avatar
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Likes: 0
Received 3 Likes on 3 Posts
bill buttermore is on a distinguished road
Default Trans cooler solves TC lockup problem

I am one happy camper today. I hope this fix will help others with the same problem. When my '95 SLE got hot, usually after about 45 minutes of driving, the torque converter would not stay in lockup. As a result, at 65 mph the tach would jump from 1900 to 2800 rpm and stay there for the rest of whatever trip I was taking. The TC would not lock up again until everything had cooled down.

Not sayin' it will work for everyone, but I installed a Long (brand) low pressure drop, stacked plate transmission cooler, (willwren recommended the type) and now my trans stays in lockup even when the car is good and hot, and the AC and cruise are on. My oil pressure is even higher than it used to be, and I am still running my wintertime 195* thermostat. Everything must be running a little cooler. Boy, I wish I had installed this thing a lot sooner.

I did not buy the biggest unit, but the one rated at 13000 Btu. The design of this cooler eliminates the need for valves or thermostats for cold and hot weather, it controls flow by the viscosity of the oil. The unit is very well made. It cost me $56 delivered to my door with all the necessary fittings and tubing and took less than an hour to install. I mounted it right in front of the passenger side fan. Here is the link to the product:
http://www.bulkpart.com/Merchant2/me...duct_Code=4454
Old 08-02-2006, 06:39 PM
  #3  
Junior Member
Posts like a Ricer Type-R
 
willwren's Avatar
 
Join Date: Aug 2002
Posts: 11
Likes: 0
Received 4 Likes on 4 Posts
willwren is on a distinguished road
Default

Name:  zz4.jpg
Views: 78
Size:  85.4 KB
Good cooler. This is the Zilla'*. Rated for 28000GVWR. It does help the whole drivetrain stay cooler. Not just the trans.
Old 08-02-2006, 06:42 PM
  #4  
Senior Member
True Car Nut
 
Maymybonnieliveforevr's Avatar
 
Join Date: Feb 2005
Location: Brampton, Ontario
Posts: 3,014
Likes: 0
Received 0 Likes on 0 Posts
Maymybonnieliveforevr is on a distinguished road
Default

That'* great, hope mine doesn't have that problem when she'* on the road.
Old 08-02-2006, 08:55 PM
  #5  
Senior Member
True Car Nut
 
John Deere Boy's Avatar
 
Join Date: Dec 2003
Location: Corn Fields, IN
Posts: 2,767
Likes: 0
Received 0 Likes on 0 Posts
John Deere Boy is on a distinguished road
Default

That'* good to hear for people with TCC problems. What determines whether a car got a cooler from the factory or not? My SSE has one but i never noticed any RPO code that called for one or anything else special.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
J Wikoff
General GM Chat
14
09-22-2006 03:53 PM
chadow427
Lounge
27
07-21-2006 08:20 PM
ComfyCar
General GM Chat
12
06-24-2005 12:08 PM
h1081dan
General GM Chat
20
11-07-2003 10:58 AM
97BonneSE
1992-1999
2
02-28-2003 10:43 PM



Quick Reply: Trans cooler solves TC lockup problem



All times are GMT -4. The time now is 07:20 AM.