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Join Date: Nov 2003
Location: Atlanta, Ga
Posts: 18
Question Transmission Enigma

I've recently had two major operations on my 944. A timing belt change, and a transmission rebuild. I had the transmission rebuilt because of a sudden loss of power. Though it had a slow leak of fluid (and was a little toasted) my mechanic said he could not find anything damning.

In fact, it didn't run again until the torque converter was replaced. There weren't even any visible problems with the torque converter... things just worked again.

Anyway, about 2 days ago, I've begun hearing a whirring noise coming from the tranny (its an auto) that starts when I accelerate, and gets louder as the car continues to accelerate.

Now, after the car has run for about 5-10 miles, it begins slipping gears and losing power. If I turn off the car and then restart the engine, I will regain power, but for just a while. It also has some real random shifting problems such as if its been running, it might not want to shift from reverse to drive, or park to drive. Sometimes I won't get power until I've revved to 500 rpm in drive. Just a load of random issues.

Is there anything I can do? Since it hasn't completely given out, I'm wondering if it might be something simple, such as a torque adjustment or fluid replacement... otherwise I need to get it to a mechanic asap.

Ryan.
87' 944 68k miles
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1987 944 Black
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Old 07-15-2004, 08:55 AM
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wow this sounds terrible - i dont know an answer but ill BUMP ure post - i'm sure somebody will chime in now
Old 07-15-2004, 11:51 AM
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When you had the tranny rebuilt, they should have changed the fluid and filter. I would take it back where you had it rebuilt and see if they gave you any warranty.
It does sound though as if the filter is clogged. I'm sure that you have, but did you check the fluid level? Also, check and make sure that the shifter cables are tight.
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Old 07-15-2004, 07:55 PM
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flex plate?
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Old 07-15-2004, 08:31 PM
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Took it into the mechanic and according to him, diff. fluid was leaking and mixing with transmission fluid, causing the clutch inside the transmission to fail...

This explains the spurratic power and slipping gears, but it doesn't wash over easy with me...

First of all, I thought the tranny and differential were completely seperate units... how far are they from eachother and is it even possible for fluid to exit the diff through a gasket leak and mix with transmission fluid (however unlikely)?

Second, its an auto transmission. Clutch? Is there a clutch in the auto tranny or is he referring to another part?

Either way, he's doing the repair for free cause the rebuild he did was still covered under warranty. Thank God. I appreciate any feedback you guys have over this.

Edit: Also, is there a place on the web where I can read up on the workings of my diff/tranny?
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1987 944 Black
Current Odom reading - 68460

Last edited by roddzilla944; 07-19-2004 at 01:03 PM..
Old 07-19-2004, 12:59 PM
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Location: Brighton UK since 11/2012
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If the seal fails between the auto trans and the diff, it will cause the trans to fail, usually the diff bearings are done too, due to the lack of oil. The "clutches" your technician is refering to are inside the trans.
The rebuilding (or resealing) of this type of trans is not straight forward and the oil mixing is normally a sign of seal failure.

For rebuilding these trans I would contact German Transaxle in Oregon.
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Old 07-19-2004, 04:30 PM
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