: Torque converter lockup?



TimPic
11-01-03, 10:23 PM
I have a 97 STS, do these cars have torque converter lockup.

When I cruise on the highway in OverDrive, I never see the Rpm's drop when I'm not on the gas, as if the TQ was locking up

Katshot
11-03-03, 06:52 AM
If it weren't locking up, you'd have a code and CEL. It may be too subtle for you to notice. Try touching the brake pedal while cruising, that will un-lock the TCC.

TimPic
11-04-03, 09:52 PM
thanks katshot, u were absolutlely correct, talk about subtle, but when I tap the break the RPM drops on the highway

mcowden
11-06-03, 12:18 PM
I could be wrong, but the TC should lock up before you get to highway speed. In the 96 SLS, it seems to lock up at about 41 MPH consistently. If you cruise just below the lockup speed, it gets a little bit of a shudder, and I always thought that was the primary signal the TC was about to lock up.

Am I crazy?


I have a 97 STS, do these cars have torque converter lockup.

When I cruise on the highway in OverDrive, I never see the Rpm's drop when I'm not on the gas, as if the TQ was locking up