motormayhem
New member
- Joined
- Aug 5, 2012
- Messages
- 28
Hi All,
My transmission was working fine until last night when it appears the torque converter lockup abruptly started not working. Overall the transmission is acting/shifting normally otherwise. When I pulled onto the highway last night I noticed when I hit 50 the TC did not lock like it usually did. At first I thought it was not locking or trying at all, but looking at it more closely it appears it may be dropping RPM~100rpm at the speed the TC usually locks vs the normal 500-600rpm. With that I think the solenoid is firing, but its slipping or barely engaging.
My plan is to drop the pan this weekend and ohm the solenoid and inspect the pan area. Is there a way I can pressure check the TC apply circuit or a pressure test port to see what the apply pressure is going to the torque converter clutch? Any other ideas on what to check? It seems surprising it would be working fine and then all of a sudden stop working if its a hydraulic problem. I'd like to determine if its a TC or transmission problem when the pan is off.
My transmission was working fine until last night when it appears the torque converter lockup abruptly started not working. Overall the transmission is acting/shifting normally otherwise. When I pulled onto the highway last night I noticed when I hit 50 the TC did not lock like it usually did. At first I thought it was not locking or trying at all, but looking at it more closely it appears it may be dropping RPM~100rpm at the speed the TC usually locks vs the normal 500-600rpm. With that I think the solenoid is firing, but its slipping or barely engaging.
My plan is to drop the pan this weekend and ohm the solenoid and inspect the pan area. Is there a way I can pressure check the TC apply circuit or a pressure test port to see what the apply pressure is going to the torque converter clutch? Any other ideas on what to check? It seems surprising it would be working fine and then all of a sudden stop working if its a hydraulic problem. I'd like to determine if its a TC or transmission problem when the pan is off.
