Clutch issue? - JeepForum.com
 
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post #1 of 4 Old 06-01-2020, 10:50 AM Thread Starter
dclifto
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Clutch issue?

Hi guys. Need the experts opinion here. 87 yj, 4.2 with manual transmission. All
Of a sudden won’t go into gear. I was able to get it in reverse once and with the clutch peddle pressed all the way it still wanted to roll like it was engaged. Thoughts?

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post #2 of 4 Old 06-01-2020, 11:22 AM
bpounds
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Have you checked the fluid? Is it topped up? Did you have to add any?

Assuming the fluid is there like it should be, pretty much has to be either a master or slave cylinder fail. If you can pump it repeatedly and get it to release the clutch, that is a good sign that it is the easier master cylinder. The slave is more likely to be a leaker, and won't pump up, and unfortunately it requires removing the transmission to replace it.

But if it is now, or ever was, low on fluid, if you are lucky it might just need bleeding. Worth looking into, but not likely to be that easy.

Bill

1988 Wrangler,4.2L I-6, Howell EFI JP-1,CRT HEI Ign,AX15 ext slave conversion, Zone 2" lift + 1" BL + 1/2" booms, BFG 31 x 10.5, Bestop.
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post #3 of 4 Old 06-01-2020, 05:26 PM Thread Starter
dclifto
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The fluid was low so I filled and bled it and everything seems good to go now.

Would it be a good idea to go ahead and replace the master cylinder? Seems like a cheap and easy enough job.

Thanks @bpounds ;
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post #4 of 4 Old 06-01-2020, 09:17 PM
bpounds
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Well the fluid went somewhere. It does not evaporate. Keep an eye on it and you might get years out of it. But if it is low again in a month, then there is a leak. If the MC is leaking you can find it. Common for it to eat paint off the firewall, on either inside or outside. If you cannot find the leak then likely it is the SC.

Bill

1988 Wrangler,4.2L I-6, Howell EFI JP-1,CRT HEI Ign,AX15 ext slave conversion, Zone 2" lift + 1" BL + 1/2" booms, BFG 31 x 10.5, Bestop.
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