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Old 11-27-2011, 01:48 AM   #1
kyles01sl2
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2001 SL2
Default Having issues with clutch engaging

I just had a new trans put in my 2001 sl2 and now when I push in the clutch, it's hard to get into gear. It feels like the pedal needs to be pushed farther down but I literally stood on it and it still was tough to get in. My mechanic said something about the shift cable but everything was fine with it 2 weeks ago when the old trans blew. Would the shift cable Cause this problem? If not what would?
Thanks, Kyle

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Old 11-27-2011, 02:13 AM   #2
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2003 L-Series 3.0L Sedan
Default Re: Having issues with clutch engaging

If the clutch master/slave unit wasn't replaced then its most likely the m/s unit. A worn out clutch can do the same to make shifting difficult. Failure to replace both at the same time is just asking for trouble and revisiting the same repair a second time.

A simple test to help isolate manual xmission faults; if the shifts are easy without using the clutch with a dead engine then difficult with the engine running, its a cutch/master/slave problem. If shifting is difficult without the engine running then its a shift linkage problem.

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Old 11-27-2011, 09:33 PM   #3
td1238
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1999 SL2
Default Re: Having issues with clutch engaging

I have read numerous posts of people who have replaced both and still had the problem of not fully disengaging. ...But ya.

Unless the hydraulic system is leaking, hydraulic problems are either going to be due to a faulty reservoir check valve (within the master cylinder) or possible air entrance. New units out of the box have weak reservoir check valve springs, so have fun with that. I have increased the spring tension to 2 pounds at 1/2 compression with fair improvement in operation.

Supposedly there is one type of pressure plate that requires less pressure and travel to operate properly, and I guess it's a Luk clutch kit.

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Old 11-27-2011, 09:54 PM   #4
cheapybob
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2000 SC1
1999 SC2
Default Re: Having issues with clutch engaging

I hate to make it obvious how ignorant I am sometimes, but WHY do we always replace the pressure plate when replacing the clutch disc? Do we actually know there is something wrong with it, or are we just expecting it to go bad eventually like we do the release bearing.

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Old 11-27-2011, 10:32 PM   #5
fdryer
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Default Re: Having issues with clutch engaging

Some have posted pictures of worn and broken fingers on their pressure plate. While it would seem reusable, once reused and reassembled with a new clutch disc and a worn pressure plate causes future repairs, its not wise to reuse worn parts in a place that's not easily accessed. Similar to clutch master/slave units reused after a new clutch is put in. Few get away with it but there those that wind up replacing theirs after more troubles. Its one thing to have easy access if using wrong spark plugs or even cleaning/regapping old ones - they can be easily replaced without too much crying but making a mistake with keeping old parts and not certain of their long term life as expected of clutch/pressure plate/clutch m/s units can be a poor choice. Of course, there are always exceptions to the rule and there is always some flexibility as each repair has to be considered according to the car history/parts wear. There are always some that go as cheap and are successful and then there are the rest that try and fail when having to revisit a repair a second time that should have used all new parts where accessibility wasn't considered during the first repair.

Ignorance is the lack of information and perspective not expected of first time repairs. Asking already discards ignorance to learn of any information not learned before hand.

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Old 11-28-2011, 03:58 AM   #6
td1238
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1999 SL2
Default Re: Having issues with clutch engaging

The pressure plate uses a diaphragm spring. Along with broken fingers, as was mentioned above, the spring can develop cracks that will destroy its operation in time. A cracked diaphragm spring will not hinge properly and draw the pressure plate out. It also will not apply proper pressure to the pressure plate when the clutch is engaged.

Best to start fresh. A remanufactured pressure plate is remachined (or replaced), and the diaphragm spring and any other worn parts are replaced.

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Old 11-28-2011, 10:39 AM   #7
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Default Re: Having issues with clutch engaging

Quote:
Originally Posted by td1238 View Post
Best to start fresh.
+1

This seems to be one of those jobs where most of your effort is spent getting at the parts, so it's a good idea to do everything right while you are in there. Not looking forward to my first clutch job (but will likely be in the next few years) but thanks to SF, pretty sure I can handle it

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Old 11-28-2011, 09:56 PM   #8
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1996 SW2
Default Re: Having issues with clutch engaging

[Oops, wrote this entire post to the wrong thread. This is where it belongs....]

Back to the OP, since this happened following a tranny R&I, it's quite possible that it happened because whoever did the work failed to heed the warning in the written procedure (or at least the warning SHOULD have been there) to ALWAYS keep the slave and damper BELOW the level of the master, while the slave is out of the tranny. Succumbing to the temptation to lift it up out of the way is a surefire way to introduce air into the system. If the clutch job was done by a professional, and indeed that's what they did, then they're responsible for replacing the hydraulics at their expense.

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