Tiptronic Help/Advice - 986 Forum - The Community for Porsche Boxster & Cayman Owners

pompous · 07-19-2011, 05:20 AM

It does have a transmission computer (TCM). The reason I don't think that is the problem is because it shifts through all the gears just fine when I put it into "manual" or "tip" mode. So, that would suggest (to me) that the computer is working to change the gears and I'm back to I guess not having enough pressure inside the tranny to shift into that 5th gear (which requires the most pressure & hence that one failing). Again, these are all guesses from me, as I really know little about transmissions.

Lil bastard · 07-19-2011, 09:17 AM

Bad shifter switch.

BTW, whoever counselled you to swap the tranny as a first course doesn't know squat about these boxes - get another mechanic.

Cheers!

pompous · 07-19-2011, 10:38 AM

Quote:

Originally Posted by Lil bastard

Bad shifter switch.

Cheers!

This would be such a relief!

Is this what mounts to the side of the transmission the linkage attaches to? If so...the new(used) transmission that was installed already had a different one on it. So, the old one(switch) was removed with the old transmission and not reused.

I thought I read about this switch causing the car to not be able to shift in manual mode rather than automatic mode?? My trouble is automatic mode from 4th to 5th. Still the same culprit...the shifter switch?

stateofidleness · 07-19-2011, 03:20 PM

*subscribed in case I ever run into this*

Jager · 07-19-2011, 04:33 PM

I have no experience with the Tiptronic tranny but could linkage adjustment be an issue?

jcb986 · 07-19-2011, 05:28 PM

I would not think it was the TIP but another problem. One being the TCM, the switch on the side of the TIP or a blockage in the cooler line going to the front and back. Electrically it could be the harness. Like Lil Bastard, I would seek out a top TIP expert first. Good luck.

pompous · 08-03-2011, 06:17 PM

The guy I went to has a PST2. So, i'm assuming he tested everything electronic. Coolant has been flushed. Transmission fluid and filter are brand new. The transmission, torque converter and transmission switch have all been swapped out w/used units. What's left? TCM & harness? Wouldn't problems w/those have been caught w/PST2? Btw...This guy I go to is supposed to be top of the line here in northeast FL for Porsches.

pompous · 01-17-2012, 02:57 AM

Quote:

Originally Posted by Lil bastard

Bad shifter switch.

BTW, whoever counselled you to swap the tranny as a first course doesn't know squat about these boxes - get another mechanic.

Cheers!

This did not correct the problem. Could it be the TCM, or harness even though it did not show any faults on the PST2?