R32 Gts-4 Overdrive Issue

[dj_cruz00]

Hi Guys

I did a seach on this and came up with nothing. My 89' GTS-4 has an auto transmission. It runs very smooth but doesn't want to shift into 4th (Overdrive). It will sometimes shift into 4th but then after awhile it will shift back out for no reason. I ran the Auto Trannie Diagnostic and it came back with no errors. Anyone have any idea's or suggestions?

Cheers

[blind_elk]

I'm no auto expert (sports cars don't have autos!), but maybe the box needs a good overhaul.

[dj_cruz00]

That helps alot! I think it's fix now........wait.....still the same.

[Butters]

Friend of mine has simular issue.

R32 GTS-T auto turbo.

Driving along will drop out of overdrive and wont go back in running like 4000 rpm at 100km/h

Did you end up finding the issue ?

[MerlinTheHapyPig]

i'm not good with autos, here is a list of possible problems and suggested solutions

http://autorepair.about.com/cs/troubleshoo...aa072702a_3.htm

almost every one says "check transmission fluid level" so i suggest that's the first thing you should do

from above website...

No 3-4 Upshift

1. Improper band/clutch application pressure.

2. Main control assembly gaskets damaged or bolt out of torque.

3. Main control separator plate damaged.

4. Main control solenoid stuck or damaged.

5. Overdrive planet assembly damaged.

6. Overdrive band adjustment incorrect.

7. Overdrive band friction elements burnt or missing.

8. Overdrive band cylinder damaged.

good luck mate.....

the above website also suggests before writing your transmissino off as a rebuild first replace the fluid and filter, make sure you use correct type of fluid.

Edited March 12, 2006 by MerlinTheHapyPig

[Butters]

Cheers dude.

Thats a scary list of things that could be wrong ...

Gve me a manual any day !!!