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'82 Porsche 928 Clutch Problem? Grinding! Help!

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Old 10-25-2008 | 07:39 PM
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Default '82 Porsche 928 Clutch Problem? Grinding! Help!

I bought a 82 porsche 928 that was sitting in a garage and not driven since 1994. We put in a new fuel pump and new fuel relay, put in new coolant and new oil. Everything was dryed out. I now have the car running and when I try to put it in gear it grinds right away. Not sure what this means. The clutch is separating from the flywheel correctly. Any help would be appreciated.
Old 10-25-2008 | 09:24 PM
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I would guess you aren't getting full stroke from the slave cylinder. Bleed that circuit. If you search on here, several have detailed how to bleed the slave cylinder.
Old 10-25-2008 | 09:53 PM
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what gear does it grind in? If it grinds between shifts you probably need synchros, which could explain the cars long slumber.
Old 10-25-2008 | 10:08 PM
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Have you tried putting the car in gear and starting it with the clutch depressed?
Sometimes the surface sticks and this may alleviate the problem.
Old 10-25-2008 | 10:15 PM
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Ditto's

Please bleed your Slave and Master before you drive your car

Your brakes are next, this may correct your problem, get a speed bleeder, Dot-3 fluid and flush it twice, my 2-cents.
Old 10-26-2008 | 06:08 PM
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Grinds in any gear. Oh , I also have a red light above my radio with an exclamation point lit and stays on as soon as the car is started and does not go off. Car did not come with a manual for me to look it up. Slave cylinder was bleed and some air came out and it seemed to help a bit, but not much. Putting car in gear and then starting the car did work in reverse and in 1st gear, but would grind (sounds like teeth grinding or metal slipping over bumps) if I try to put into a different gear. I found the dot-3 container and cover is cracked and it looks full. Will try to flush.
Old 10-26-2008 | 09:55 PM
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Open your inspection hole and look at your clutch to check for its condition.

You dash should have a indicator lamp on if your central warning lamp is on.

When you turn on your car to start does all the lamps light. Pay close attention to the timing belt lamp or brake circuit warning lamp, that can trigger your ! lamp.
Old 10-26-2008 | 11:33 PM
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Possibly, intermediate plate adjustment. This is determined if once you get going, shifting is fairly easy. If it is still very hard, its probably synchros. (or not full clutch engagement. If the pedal is up top and give full travel, its probaby not the issue)

mk
Old 10-27-2008 | 04:19 AM
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if the car sat for awhile i'm thinking some corrosion on the clutch and plates just hanging things up prolly needs a good drive give a the cluch a couple of good slide situations wear off some of that corrosion
Old 10-27-2008 | 06:53 PM
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On older cars, I believe that you have to manually push the exclaimation point button to make it go off. It should come on every time you start the car. Once the car is started and the button pushed, the light should stay off. If it doesn't stay off or comes back on while the car is running, then it is notifying you of a problem.
Munoz, where are you located? Lots of people around to help if we know where you are.
Old 11-08-2008 | 07:18 PM
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plates were stuck and screwdriver did the trick to get them apart thanks to my friend who was helping! car now drives!
Old 08-27-2022 | 05:25 PM
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Originally Posted by Munoz20
plates were stuck and screwdriver did the trick to get them apart thanks to my friend who was helping! car now drives!
I know this is an old post but i have a barn find that i just got running but now I am having the same issue.... bled everything but I am still getting grinding... How did you exactly pry the plates apart? I don't want to brake anything.
Old 08-27-2022 | 05:57 PM
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Set the E brake ,
Put the trans in 3rd gear,
put your foot on the brake.

Press the clutch pedal to the floor,
Crank the engine,
this should break the clutch free.
if it starts and runs.
Shut it off.
put in 1st then repeat the procedure.
With the engine running , and the pedal down, and in gear
let the clutch out a bit till it starts to grab, then push it down do this a few times .
this will wear off the corrosion of the plates. Then take it for a drive .
NOTE if you cant get the shifter into gear while its running.
shut it off,
put it into first gear,
then push the pedal down,
Start it then drive off.
If still no good then the clutch may have to be removed to inspect all of the parts ,
or the system may need new hydraulic parts
The following 3 users liked this post by Mrmerlin:
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Old 08-29-2022 | 01:59 PM
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Thanks for the advice. I got her into gear but first and reverse are very difficult at a stop. I believe maybe the intermediate disc needs to be adjusted?

*Update... stuck in 2nd gear and gear shifter has a ton of play forward and backwards. I cannot move the shifter left or right. I am assuming my shift coupler exploded/broke???

Last edited by yanik; 08-29-2022 at 02:02 PM.
Old 08-29-2022 | 02:07 PM
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yes



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