Torque Converter??
12-26-2005, 05:29 PM
#1
Rennlist Member
Thread Starter
Torque Converter??
Has anyone ever experienced a bad torque converter? What's a sign of it going bad? Is there a check I can do?
My Shark has always been slow to get off the line, with the SC installed, it's quicker, but still lags a bit when I put the pedal to the floor
My Shark has always been slow to get off the line, with the SC installed, it's quicker, but still lags a bit when I put the pedal to the floor
Last edited by Darien; 12-26-2005 at 07:41 PM.
12-26-2005, 07:35 PM
#2
Burning Brakes
Join Date: Oct 2004
Location: Suburban St. Louis in Illinois.
Posts: 877
Likes: 0
Received 1 Like
on
1 Post
If your tranny slips badly in reverse...and any forward gears... and I mean ANY forward gears,( if its not giving proper lockup in the converter, it "should" be slipping in all gears (although some may be FAR more noticeable than others...and / or...the transmission fluid will be dark brown to black in color...and smell of burnt clutch material from the slippage... the converter is a fairly easy issue to diagnose. Although...burn't clutches in the transmission, and sticking valves in the valve body can produce similar problems. 
12-26-2005, 09:30 PM
#3
Rennlist Member
Rennlist Site Sponsor
1) Get a separate, accurate tachometer - do not use the car's tachometer for this test.
2) Check the transmission fluid level.
3) Engine must be operating properly, and developing full power.
4) Orient the car so that there will be no damage if it lurches forward.
5) Crank the engine, turn off all accessories (especially A/C), and run the engine at 2000 RPM in Park for two minutes, then allow to idle.
6) Fully apply parking brake and FIRMLY apply and hold the brakes.
7) Put the transmission in Drive, floor the throttle, and hold it for NOT MORE than five seconds while checking the max RPM level achieved.
Transmission Models A28.01/02/03/05/06/08/09/11 should show a stall speed of 2200 - 2600 RPM.
A28.04/07 should show 1650 - 2050 RPM.
A28.12/14/16/18 should show 1750 - 2150 RPM.
Adjust these speed specifications downward 125 RPM for every 1000 M of altitude.
If the stall speed is 400 - 700 RPM low, the torque converter freewheel (one-way sprag clutch) is slipping.
If the stall speed is 300 or more RPM high, the transmission is slipping.
If the stall speed is correct, but the car has limited top end speed, the torque converter freewheel is frozen.
2) Check the transmission fluid level.
3) Engine must be operating properly, and developing full power.
4) Orient the car so that there will be no damage if it lurches forward.
5) Crank the engine, turn off all accessories (especially A/C), and run the engine at 2000 RPM in Park for two minutes, then allow to idle.
6) Fully apply parking brake and FIRMLY apply and hold the brakes.
7) Put the transmission in Drive, floor the throttle, and hold it for NOT MORE than five seconds while checking the max RPM level achieved.
Transmission Models A28.01/02/03/05/06/08/09/11 should show a stall speed of 2200 - 2600 RPM.
A28.04/07 should show 1650 - 2050 RPM.
A28.12/14/16/18 should show 1750 - 2150 RPM.
Adjust these speed specifications downward 125 RPM for every 1000 M of altitude.
If the stall speed is 400 - 700 RPM low, the torque converter freewheel (one-way sprag clutch) is slipping.
If the stall speed is 300 or more RPM high, the transmission is slipping.
If the stall speed is correct, but the car has limited top end speed, the torque converter freewheel is frozen.
That's what I was looking for 
