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looking at an 01 v70xc

posted by  KlausC on  Tue Mar 2 08:11 CST 2010
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Don't you just love computers controlling logical functions of your car?

The AW55 was designed to run with the TCU in control of everything, unlike older trannies that relied on pumps and solenoids. One of the 'upgrades' was to have the tranny shift to internal neutral or out of gear when the car came to a stop, rather than have the torque converter slipping.
The computer software relied on the speed sensor, throttle pos sensor, and a couple of other unreliable pieces of junk. So the tranny that was supposed to go to N, didn't. Then it would take a good push of the throttle to get it to re-engage 1st gear. All sorts of banging going on.

The "fix" was to remove the shift to N when the car came to a stop. That solved all sorts of other potential problems and the torque converter is still just as happy as ever.

Klaus
--
Praying for Cynthia Amendt, heaven bound






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