Clutch Problems, Need Diagnosis Help
04-14-2005, 08:53 PM
#1
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Join Date: Jul 2001
Location: S. Florida
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I had clutch problems a while back with the clutch pedal going all the way to the floor and not coming back up. Replaced the slave cylinder which didn't solve the problem so I then replaced the master. Problem solved.
Today, without warning, the car decided it would not shift or go into gear with the car running. Clutch pedal felt completely normal.
With the car running and the clutch pushed in, there's lots of clattering. I'm using an Exedy Hyper Pro single.
With the car off, I jacked it up, removed the inspection plate, and took a gander. I had suspected a snapped clutch fork. It looks to be intact.
Next, I had a friend push the clutch in while I was watching. The fork moved and it looked like the clutch disengaged slightly, but not as much as I thought it would.
I inspected the clutch slave and master cylinder for external leaks. Again, I have full hydraulic pressure with no bleed down. I am assuming an air bubble would eventually make the clutch pedal go soft.
I cannot shift into gear at all while the car is running. I can turn the car off, put the gear selector in first, start the car and the car will lurch forward and eventually start as the starter motor moves the car along. Naturally, this makes the car absolutely useless.
Anyway, advice as to what this could be would be greatly appreciated. The clutch has less than 5,000 miles on it. I'm really hoping it's the throwout bearing and not the pressure plate.
I just installed a brand new GT4088 and $7K engine...to say the least it's really frustrating!
Today, without warning, the car decided it would not shift or go into gear with the car running. Clutch pedal felt completely normal.
With the car running and the clutch pushed in, there's lots of clattering. I'm using an Exedy Hyper Pro single.
With the car off, I jacked it up, removed the inspection plate, and took a gander. I had suspected a snapped clutch fork. It looks to be intact.
Next, I had a friend push the clutch in while I was watching. The fork moved and it looked like the clutch disengaged slightly, but not as much as I thought it would.
I inspected the clutch slave and master cylinder for external leaks. Again, I have full hydraulic pressure with no bleed down. I am assuming an air bubble would eventually make the clutch pedal go soft.
I cannot shift into gear at all while the car is running. I can turn the car off, put the gear selector in first, start the car and the car will lurch forward and eventually start as the starter motor moves the car along. Naturally, this makes the car absolutely useless.
Anyway, advice as to what this could be would be greatly appreciated. The clutch has less than 5,000 miles on it. I'm really hoping it's the throwout bearing and not the pressure plate.
I just installed a brand new GT4088 and $7K engine...to say the least it's really frustrating!
04-14-2005, 09:36 PM
#3
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Join Date: Jul 2001
Location: S. Florida
Posts: 629
Fantastic....I think by the time I have all the bugs worked out ofthe car, I'll have to have both of my arms replaced. Thanks for the "input" :-) I appreciate the help. It should be a fun weekend.
Michel
Michel
04-14-2005, 09:39 PM
#4
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Join Date: Jul 2001
Location: S. Florida
Posts: 629
I also checked the clutch disengagement again and it's definitely disengaging. I can "rattle" the clutch disk back and forth. Must have damaged the pilot bearing putting the engine in sigh...
04-15-2005, 09:18 AM
#5
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Join Date: Sep 2002
Location: Alexandria Va
Posts: 657
Well something like that happened to me on my 8. The clutch disc exploded(hub part). So only switched gears when you had it in gear and then started it. But also it would lunge forward. So if yours does not have symptoms like this I fear it may be serious.
04-15-2005, 12:02 PM
#7
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Join Date: Jul 2001
Location: S. Florida
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I examined the clutch disk through the clutch inspection port and the disk itself is intact.
As for the installation, slid the clutch onto the input shaft along with the disk (in the right direction!) and installed the engine. I then tightened the pressure plate up through the clutch inspection port, rotating the engine with a socket on the front main pulley bolt.
Picked up a throwout and pilot bearing today (apparently it could be either) and will begin disassembly soon. I'll be throwing on an xcessive cast aluminum oil pan while I'm down there.
As for the installation, slid the clutch onto the input shaft along with the disk (in the right direction!) and installed the engine. I then tightened the pressure plate up through the clutch inspection port, rotating the engine with a socket on the front main pulley bolt.
Picked up a throwout and pilot bearing today (apparently it could be either) and will begin disassembly soon. I'll be throwing on an xcessive cast aluminum oil pan while I'm down there.
04-15-2005, 01:55 PM
#9
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Join Date: Nov 2002
Posts: 3,108
[quote name='rfreeman27' date='Apr 14 2005, 09:33 PM']a blown pilot can cause this, the input shaft cannot move independently from the motor causing it to not shift and such.
Prolly going to have to pull the trans out...
[/quote]
Yup you nailed it. I had the same problem. The pilot bearing shreaded and all the inner race and needles got destroyed and jammed the input shaft from advancing. When I pulled the tranny all that was left of the pilot bearing was metal shavings, random needles from the bearing, and the outer casing of the bearing.
Prolly going to have to pull the trans out...
[snapback]699911[/snapback]
[/quote]
Yup you nailed it. I had the same problem. The pilot bearing shreaded and all the inner race and needles got destroyed and jammed the input shaft from advancing. When I pulled the tranny all that was left of the pilot bearing was metal shavings, random needles from the bearing, and the outer casing of the bearing.
04-17-2005, 06:25 PM
#10
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Join Date: Dec 2001
Location: Panama City Beach, Florida
Posts: 993
also another note:
When you get this fixed, make sure that u adjust the clutch pedal's fulcrum point after installing an aftermarket clutch and pressure plate.. it is in the instructions to do so, so that you are not causing any undo wear to the parts.
When you get this fixed, make sure that u adjust the clutch pedal's fulcrum point after installing an aftermarket clutch and pressure plate.. it is in the instructions to do so, so that you are not causing any undo wear to the parts.