The Best Half Ton Towing Truck - Ike Gauntlet

Samsonsworld wrote:

wilber1 wrote:

Samsonsworld wrote:
One, I've never seen an engine run at full throttle that didn't get hot. Two, fuel has nothing to do with the tranny. If that torque converter slips, it heats up fast. Also a problem running full throttle.

The ZF torque converter is only unlocked when the truck is stopped and for launch in first gear, otherwise it is locked all the time. If it slips it's because it is broke. Higher RPM's mean more line pressure and less chance of slippage.

Your tranny slips every time you change gears or it would jerk and it will hunt when you have enough throttle.

The 68RFE in my truck does but the ZF in my Audi doesn't. Shifts take place in 200 milliseconds and when it does, the rpm changes are solid with no sign of converter unlock.

Car and Driver