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Old 11-14-2014, 10:52 AM
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zrfitzpatrick's Avatar
Join Date: Nov 2014
Location: Louisville, KY
Posts: 57
08 Sahara clutch issues

I have recently been experiencing odd clutch issues. I did a search on here and haven't found anyone with the same problem, so I am making a new post. Sorry for being lengthy, but it helps if you have all the details upfront.

I have an 08 Sahara 2dr 6spd. Recently, since the temperature has been dropping, I have noticed that only in the mornings when the Jeep is cold, it is extremely difficult to get the jeep in gear.

It seems that when I start the Jeep cold, the clutch doesn't fully engage (even all the way to the floor). To prove this, I tried starting the Jeep with tranny in 1st and clutch to the floor on flat ground, the jeep starts rolling from under power. Same if I start the jeep in reverse or 2nd. Once I am on the road and the tranny and clutch warm up, everything returns to normal (takes a few miles of driving). The clutch peddle is a little soft for first couple of inches, but is normal past that to the floor (once warm). Cold, the pedlde is soft, but has resistance. Once warm, normal resistance returns except for first couple inches.

1) I have drained and replaced tranny fluid with Penzoil syncromesh.
2) Brake/Clutch Fluid reservoir is full.
3) no leaks at master cylinder (either inside the cab or in the engine bay)
4) no leaks at slave cylinder

I have not bled the slave cylinder yet, but that is my next item to do.

With no leaks and operation returns to normal after warming up, what do the experts on here feel is my issue? Could it be something as simple as condensation/air in fluid and bleeding will fix the issue? If that's the case I would think my brakes would also be soft as well. Should I start saving to replace master cylinder and slave cylinder?

Thank you all ahead of time!

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Old 11-14-2014, 11:34 AM   #2
Blastek's Avatar
Join Date: Mar 2012
Posts: 3,054
Sounds like you need to bleed slave cylinder. Doesn't sound like a clutch or trans issue.

2012 Deep Cherry Red JKU Sport S - Tickastar, 6 speed, 3.73, Dual Tops
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Old 11-21-2014, 09:43 AM
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Join Date: Nov 2014
Location: Louisville, KY
Posts: 57
ok, finally got it corrected. It ended up needing bled. To do this, I took the cap off the brake reservoir and used a pump to drain all of the visible fluid out, then topped off with new. I know this doesn't fully "flush" it, but it helps. I then went under the jeep and took the 2 nuts off that hold the slave in place, and pulled the slave out of the housing. I then pushed the piston in as far as I could a few times while a buddy watched the reservoir for bubbles and to make sure it didn't over flow. I pumped it like 20 times, but when I went to test it, it didn't seem to fix the problem. I then had my buddy get in the jeep and push the clutch in slowly. As he did this, I pushed against the slave piston until he had the pedal to the flow. We did this about ten times, then checked the fluid and put the cap back on. I took it for a test drive and the clutch was better than when I picked it up 1.5 yrs ago with 35k on it!! That was Monday, and it has been in the teens here since, and I have not had any issues! Thanks for the help.
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