89' 760 Turbo - Tranny problem

[Norbert]

Problem started about a month ago, here are the symptoms:

- from a dead stop tranny won't engage up through the gears until about
4000-4500rpm (I have to manually go off the gas pedal momentarily to engage
the tranny to a higher gear to prevent the rpm's going so high).
- between 55-65km/h and 95-105km/h while cruising, anytime the tach goes
above 2500rpm the tranny drops to a lower gear until pass the 65 or 105km/h
then goes back up to the appropriate gear (I would have to speed up just so
I get above the two speeds just so I'm cruising at a reasonable rpm).

Note: No leaks. Tranny fluid has been checked with a warm engine while
idling on level ground.

Any suggestions on a fix would be greatly appreciated.

Norbert

 

[Guest]

Problem started about a month ago, here are the symptoms:

- from a dead stop tranny won't engage up through the gears until about
4000-4500rpm (I have to manually go off the gas pedal momentarily to engage
the tranny to a higher gear to prevent the rpm's going so high).
- between 55-65km/h and 95-105km/h while cruising, anytime the tach goes
above 2500rpm the tranny drops to a lower gear until pass the 65 or 105km/h
then goes back up to the appropriate gear (I would have to speed up just so
I get above the two speeds just so I'm cruising at a reasonable rpm).

Note: No leaks. Tranny fluid has been checked with a warm engine while
idling on level ground.

Any suggestions on a fix would be greatly appreciated.

Kickdown cable broken / come unhooked in the wide throttle / kickdown
position????

Tim..

 

[Michael Pardee]

Problem started about a month ago, here are the symptoms:

- from a dead stop tranny won't engage up through the gears until about
4000-4500rpm (I have to manually go off the gas pedal momentarily to
engage
the tranny to a higher gear to prevent the rpm's going so high).
- between 55-65km/h and 95-105km/h while cruising, anytime the tach goes
above 2500rpm the tranny drops to a lower gear until pass the 65 or
105km/h
then goes back up to the appropriate gear (I would have to speed up just
so
I get above the two speeds just so I'm cruising at a reasonable rpm).

Note: No leaks. Tranny fluid has been checked with a warm engine while
idling on level ground.

Any suggestions on a fix would be greatly appreciated.

Norbert

As Tim says, the kickdown cable. Several people have had problems with the
cable sticking. If you look at the throttle body with the engine off and see
one of the cables on that aluminum spool slack, you've found the culprit.
Graphite (I like Lock-Ease) and a little fiddling should straighten it out.

Mike