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Anonymous Posted on Dec 21, 2008

Transmission or Clutch problem?

Hello, I have a 1991 Jeep Wrangler 6cyl. 5spd. The previous owner had the motor replaced / rebuilt last Fall and he just put in a new clutch, slave cylinder, and clutch master cylinder. I have had the Jeep 2 months. This past weekend I went to go into 2nd gear and it would not. It did not grind, but just would not go in. After moving the gearshift around it finaly went in. Now it also won't go into third a lot of the time or reverse without going into other gears and moving it around first. It just feels like something is getting stuck and won't let me go into gear. I have had to quit driving it for now. How can I tell if it is the cluch ( needing adjustment?) or if the transmission has gone bad? Is there anything I can try to do that may fix the problem. I sure miss driving my jeep. Thanks Mike Hey guys. I may have the same problem as Mr. Mike above. His description matches mine almost perfectly. There is one difference. When I get the vehicle moving, and push in the clutch, I get a hard clicking noise (in either 1st or reverse) likewise when I am at a stop, and I release the clutch I get a grinding noise from the trans. Any help would be much obliged.
Thanks;
Steve

[email protected]

  • Anonymous Dec 21, 2008









    I may have the same problem as Mr. Mike above. His description matches mine almost perfectly. There is one difference. When I get the vehicle moving, and push in the clutch, I get a hard clicking noise (in either 1st or reverse) likewise when I am at a stop, and I release the clutch I get a grinding noise from the trans. Any help would be much obliged.
    Thanks;
    Steve

    [email protected]

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  • Jeep Master 6,982 Answers
  • Posted on Dec 21, 2008
Anonymous
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Jeep #1: Sounds like a shift linkage problem. Possibly synchro forks are sliding back and forth on shift rails and are out of adjustment. This is internal and cannot readily be fixed without trans removal as far as I know. Hydraulic clutch system is non-adjustable. A new clutch should last at least 70K so, unless it was installed improperly, it should be OK. Check hydraulics for leaks & bleed. Clutch should "catch" about two inches off floor (not too low or not too near top of travel)
Jeep#2: Has a synchro or other internal gear problem... Symptoms are similar but gringing and clicking noises indicate worn or broken internal components!
Good luck to both!

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Hi Mike,

Your description is excellent.

All the recent replacements make those components suspect. The symptoms point at two possible problems.
If the tranny had a linkage, I'd say that was it. The problem may be related though.
  • Does the shift lever feel loose?
  • Same shifting problems when trying reverse?
  • With the engine off do the same shifting problems exist? (this one points away from the clutch)
I'd check the that the retaining ring on the shift lever is fully engaged (quarter twist against two pins on top of tranny). The book ha a long procedure for accessing it, but the easy way is through the shift lever boot.

The clutch system:
  • Check fluid level
  • Any leaking fluid from master cylinder, operating cylinder or connecting lines?
  • Has the fluid level fallen to a point where air could have been drawn into the cylinder?
  • Does the fluid look clean, no particulates?
To be thorough, I'd bleed the clutch hydraulics. There may be air in the lines.

With multiple possible causes, I usually check the least expensive solutions first. This is where I'd start. Comment me back, let me know how it goes.

Mike

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