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Riesentöter Forums › Tech › Ask the Tech Chair v
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944 gear shifting problem

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944 gear shifting problem
David 41 Offline
Riesentöter PCA Member
Members
Posts: 48
Threads: 24
Joined: Dec 2008
#1
06-29-2009, 10:21 AM (This post was last modified: 06-29-2009, 02:58 PM by David 41.)
Hi,

Please help?

My shifter jammed in neutral during a 4 to 3 shift at NJMSP Friday.  The car would not go into any gear with the engine on but could be put into gear with the engine off.  The car would also creep forward with the cluth disengaged.

Jim of Dougherty's thought it was a hydraulic problem and bled the clutch line.  That allowed the gears to be shifted by using double clutches and force.  Thanks Jim!

I was able to get the car home in 4th gear. My GPS showed 65 MPH and the RPM was constant, no slipage.

Sunday night I took the car to my local Porsche dealer (only 2 miles from my home too bad Dougherty's was too far).  When I started the car the shifter was working normally, after a few shifts it had to be double clutched again.

The dealer's assesment is that the hydraulics are not the problem but it is mechanical.  A complete overhaul of the clutch would be needed.  The clutch in the car now has only 40K on it.

The two solutions are poles and $$$ apart.

Dave Ford

215-850-8489 cell
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Larry Herman Offline
Riesentöter Technical Chair
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Posts: 385
Threads: 34
Joined: Jul 2006
#2
06-29-2009, 04:02 PM
David, if you can shift it with the engine off, and it creeps forward when the engine is running and the clutch is depressed it pretty much limits the problem to lack of disengagement.  That would be one of 2 things, either the clutch is not releasing due to insufficient throwout travel, or the clutch disk is dragging between the pressure plate and flywheel.

Since bleeding helped somewhat, I would look at the clutch slave cylinder first, and then the clutch master cylinder 2nd.  Only after I knew that both were working properly would I pull the trans and look at the clutch.
Larry Herman
2006 Cayenne S
2010 Allegro RED 38QBA
Nationally Certified PCA Instructor
Past Flames:
1994 RS America Club Racer
2004 GT3 Track Car
1984 911 Carrera Club Racer
1974 914/4 2.0 Track Car
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David 41 Offline
Riesentöter PCA Member
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Posts: 48
Threads: 24
Joined: Dec 2008
#3
06-30-2009, 01:25 AM
Thank you Larry!

I'll go with your advice.

Much Appreciated,

David
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asher681 Offline
Riesentöter PCA Member
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Posts: 112
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Joined: Nov 2008
#4
07-06-2009, 08:11 AM
David, Were in Warwick do you live, we live in Jamison Hunt.. Joe VP  P.S. good luck with your tranny issues....
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asher681 Offline
Riesentöter PCA Member
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Posts: 112
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Joined: Nov 2008
#5
07-06-2009, 08:11 AM
David, Were in Warwick do you live, we live in Jamison Hunt.. Joe VP  P.S. good luck with your tranny issues....
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