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Old 11-23-2012, 01:10 PM
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1989porsche928
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Default transmission update

I previously had the following problems.
High winding noise in 2nd gear selector
Would not upshift out of second

I replace the kickdown solenoid and housing
Changed fluid and filter
Took apart valve body and cleaned it (possibly installed some springsin wrong places)

Then i tries driving it. The jowling noises went away when the selwctor was in second. But still no upshift. So i took out the kickdown relay and disconnected bowden cable. It will shift out of second now. I am confident the modulator is not at the right pressure. But whats wro.g with the bowden cable and relay. I hope disconnecting the cable will work for now i am at the carwash i hate it when my car is dirty
Old 11-23-2012, 01:20 PM
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1989porsche928
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Now it wont go into reverse wtf
Old 11-23-2012, 01:23 PM
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1989porsche928
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Reverse was working fine 30 minutes ago
Old 11-23-2012, 01:34 PM
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Correction i think the car is still stuck in second. It just doesnt have high rpm at20 mph. Now when i am driving 60mph the rpm is 3050 rpm
Old 11-23-2012, 02:15 PM
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...

Last edited by Landseer; 11-23-2012 at 02:54 PM.
Old 11-23-2012, 02:34 PM
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whats hatch?
Old 11-23-2012, 02:50 PM
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I am about to make a YouTube show on the progress or restoring my 928 (especially after this week).
Old 11-23-2012, 02:55 PM
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Please do it.

The weakest area of our community is transmission knowledge.
Those few that know don't share.
What you do to troubleshoot is going to help the rest of us.
Old 11-23-2012, 03:33 PM
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Originally Posted by Landseer
Please do it.

The weakest area of our community is transmission knowledge.
Those few that know don't share.
What you do to troubleshoot is going to help the rest of us.
Heh, Wait a minute. I help everyone as much as possible.

It's not my fault, I'm stupid!
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Old 11-23-2012, 03:34 PM
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HA!

You do know them!

What we are missing is a Dwayne-style write up on a complete refresh of the automatic.

Rob could snap the pictures.

You'd sell more parts than you'd ever rebuild in transmissions.
Old 11-23-2012, 04:10 PM
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Originally Posted by Landseer
HA!

You do know them!

What we are missing is a Dwayne-style write up on a complete refresh of the automatic.

Rob could snap the pictures.

You'd sell more parts than you'd ever rebuild in transmissions.
The actualy "labor steps" could be photographed and documented. Knowing what needs to be replaced (and why) is the tough part.

And then, if the part could be bought for $.25 cheaper from someone else, I'd proovide all the knowledge for no return. Part of the big problem, today, is that people will spend 3 hours (usually while at work), looking at every site they can find on the Internet, to save a couple of bucks.
Old 11-23-2012, 05:06 PM
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1989porsche928
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If I pull out the governor will fluid flow out of the transmission uncontrollably? I could pull it out tonight and upload a picture of it and you guys could tell me if it looks broken.
Old 11-23-2012, 06:27 PM
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Originally Posted by Landseer
HA!

You do know them!

What we are missing is a Dwayne-style write up on a complete refresh of the automatic.

Rob could snap the pictures.

You'd sell more parts than you'd ever rebuild in transmissions.
The other, not so obvious problem, is that 90% of the "professionals" doing these things aren't doing them correctly. Before I started doing them myself, I had so many problems with "rebuilt transmissions" that I finally either had to do learn how to do them myself, or tell customers that needed their transmissions rebuilt to go somewhere else.

I do not consider them to be simple.

Thinking about what a non-professional could do to one of these things, is pretty scary.

Last edited by GregBBRD; 11-23-2012 at 06:52 PM.
Old 11-23-2012, 06:48 PM
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1989porsche928
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thinking about it, the guy i took to diagnose my transmission, he was easy to say i needed a rebuilt one, and it was stuck in 2nd not 1st. it was flaring in 2nd until i disconnected the bowden cable and remove the kickdown relay "now reverse does not work , no flaring, but atleast it will go past 40mph without 6,000 rpm.
Old 11-23-2012, 06:49 PM
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hey greg what does the real tool look like to plug into the vacuum modulator? like the one a benz dealership would have?


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