torque converter problem and rear end problem
#1
torque converter problem and rear end problem
Okay.First off. I have a 9 bolt borg warner rear end from a 3rd gen.. I heard it is not made anymore and I was wondering if anyone has a part number to the gasket seal for it. I wanna change the oil but i have no gasket.
Secondly. My torque converter is locking up when it should be. It is causing my engine to be bogged down. So i did the lockup switch as done in the tech articles. It works great until my car warms up and then the torque converter will override the switch and lockup in over drive. I am only goin 50mph or so which is not when im wanting to lockup. Is this because the torque converter is shot? If so im thinking of buyig a nonlockup one. How much mpg would i be losing here?
Secondly. My torque converter is locking up when it should be. It is causing my engine to be bogged down. So i did the lockup switch as done in the tech articles. It works great until my car warms up and then the torque converter will override the switch and lockup in over drive. I am only goin 50mph or so which is not when im wanting to lockup. Is this because the torque converter is shot? If so im thinking of buyig a nonlockup one. How much mpg would i be losing here?
#2
TGO Supporter
Join Date: Apr 2004
Posts: 509
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Z28
Engine: L98
Transmission: 700R4
Re: torque converter problem and rear end problem
Check TV cable adjustment and it may be possible the TCC lockup switch in the tranny is going
#3
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 26,117
Received 1,688 Likes
on
1,283 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: torque converter problem and rear end problem
a part number to the gasket seal for it
No your TC problem is not the TC itself. Sounds like it's working perfectly. The "problem" is that your idea of when the TC should lock up is different from the factory's idea of when it should lock up. Not that the factory would know anything about that, or anything like that.... but it is most easily changed by PROM programming, since that's what's controlling it.
It is not the TV cable (since that is not conected in any way with the ECM's decision to issue the TCC command) nor is it the solenoid since it seems to be responding perfectly to commands both from the ECM and from your hacked-in switch. There is no such thing as a "TCC lockup switch" in the transmission.
#4
Supreme Member
Join Date: Jul 2003
Location: any clime or place...
Posts: 2,779
Likes: 0
Received 2 Likes
on
2 Posts
Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen
Re: torque converter problem and rear end problem
when my lockup switch went south, it'd flutter in and out of lockup in forth. sounds like everything is gtg TC wise.
mine boggs down too, but i'm far from stock, so...
mine boggs down too, but i'm far from stock, so...
#5
Junior Member
Join Date: Sep 2007
Location: DETROIT
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 IROC-Z
Engine: 5.7 TPI
Transmission: 700R4
Re: torque converter problem and rear end problem
Have you thought of checking your vehicle speed sensor? it is located on the back of your instrument cluster. The pre 89 camaros used a cable driven speedometer and used an optical vehicle speed sensor.
So if your lockup is digengaging with the brake aplied... I'd say the TCC is working properly... and your ECM is communicating as well.
I'd check the VSS for erratic operation. If it completely fails, it will throw a code 24, but if is is still working, but not correctly, no code will throw. That was what was wrong with my 87 IROC.
The VSS tells the ECM how fast the vehicle is going. Most people think the VSS is only used for the lock-up torque converter. The VSS is also used to control the EGR valve, the charcoal canister purge valve, the electric cooling
fans, idle speed, and air/fuel ratio.So if your lockup is digengaging with the brake aplied... I'd say the TCC is working properly... and your ECM is communicating as well.
I'd check the VSS for erratic operation. If it completely fails, it will throw a code 24, but if is is still working, but not correctly, no code will throw. That was what was wrong with my 87 IROC.
#6
Senior Member
iTrader: (1)
Join Date: Nov 2007
Location: saint cloud,florida
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 Iroc z
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.73
Re: torque converter problem and rear end problem
Have you thought of checking your vehicle speed sensor? it is located on the back of your instrument cluster. The pre 89 camaros used a cable driven speedometer and used an optical vehicle speed sensor.
So if your lockup is digengaging with the brake aplied... I'd say the TCC is working properly... and your ECM is communicating as well.
I'd check the VSS for erratic operation. If it completely fails, it will throw a code 24, but if is is still working, but not correctly, no code will throw. That was what was wrong with my 87 IROC.
The VSS tells the ECM how fast the vehicle is going. Most people think the VSS is only used for the lock-up torque converter. The VSS is also used to control the EGR valve, the charcoal canister purge valve, the electric cooling
fans, idle speed, and air/fuel ratio.So if your lockup is digengaging with the brake aplied... I'd say the TCC is working properly... and your ECM is communicating as well.
I'd check the VSS for erratic operation. If it completely fails, it will throw a code 24, but if is is still working, but not correctly, no code will throw. That was what was wrong with my 87 IROC.
Thread
Thread Starter
Forum
Replies
Last Post
hectre13
Engine/Drivetrain/Suspension Parts for Sale
2
12-11-2023 08:14 AM
hectre13
Engine/Drivetrain/Suspension Parts for Sale
7
08-26-2015 08:17 AM
1992 Trans Am
Engine/Drivetrain/Suspension Parts for Sale
1
08-08-2015 08:16 PM