01-12-2011, 06:57 PM
Join Date: Aug 2010
Slave cylinder shenanigans
Ok so this is wierd.
The jeep loses clutch pedal when its cold. If it goes soft while in gear, the clutch engages and moves the jeep (or chokes it down if brake is on).
If however I let the jeep warm up to operating temp (above 170 degrees), the clutch system holds and I don't lose any pedal. Been driving it for a couple days due to snow and don't seem to be losing any fluid from the clutch master cylinder resovior.
I replaced the clutch master cylinder this weekend. Got firmer clutch feel and good engagement on all gears once up to temp. Inspection during the project showed evidence of leakage from the bellhousing (slave cylinder). First time I took it out I had same symptoms on clutch pedal but now I find if I let the jeep warm up first I don't seem to lose any fluid.
Now with 124k miles and 20 years on the clock, I've got think its time to replace the slave cylinder to truly fix the problem, especially with evidence of fluid at the bottom of the bellhousing. I plan do this in the garage with the help of some tools I need to round up first (tranny jack, better air tools). I would just like to wait unitl the temps get out of the teens, above freezing. No one likes busting loose rusted bolts in the cold.
Anyone have an explanation for the reason why the clutch slave cylinder will hold pressure at operating temps but not when its cold? Anything else I can do to buy time before temps get warmer and I can put the cash I need together to do the whole clutch job?
1991 Wrangler Base
White on Tan
31x10.50 Cooper Discoverer ATR
TJ Canyon wheels