Re: Hard Downshifting
 

It's not an internal problem, almost certainly clutch (or clutch
hydraulics) related. Your input shaft is turning with the engine, maybe
not way up at idle RPM but more than normal, when you press the pedal
to the floor. The clutch is not completely disengaging or the pilot
bushing-to-input shaft interface has too much friction which is causing
the input shaft to continue spinning. You can confirm this if you
gently ease it into reverse and hear the gears ratcheting together
without coming to a stop in a couple of seconds.

If your Jeep had sat at some point, read on...

I had a similar problem with my '94 YJ (also 2.5L, MT) - it was fine
when cool, but acted up once the engine warmed up, but was
intermittent. I'd either have to go into 4th or 5th before entering a
lower gear once stopped or kill the engine to shift into 1st.

After disassembly, the clutch and it's components all looked great but
the transmission input shaft was ratty looking - this jeep had been
parked for 8-10 months before I bought it which probably contributed to
the problem. It didn't do it at first, but rather appeared a few months
after I had been driving it. I separated the transmission from the
engine, gently polished the input shaft up with some crocus cloth
enough to get the surface rust off, regreased it, and it was fine
since.


Spdloader wrote:
> 1994 Wrangler 2.5l 4cyl, with 5spd. Don't know which 5spd.
>
> It is terribly hard to downshift into 1st, 2nd or Reverse when stopped.
> It'll
> shift just fine if slightly rolling.
>
> Upshifting is no problem.
>
> I'm definitely not a transmission mechanic.
>
> Ideas? Have it rebuilt? Synchros? Shifter fork? Clutch Slave?
>
> Thanks in advance for any ideas.
>
> Spdloader

Re: Hard Downshifting
 

It's not an internal problem, almost certainly clutch (or clutch
hydraulics) related. Your input shaft is turning with the engine, maybe
not way up at idle RPM but more than normal, when you press the pedal
to the floor. The clutch is not completely disengaging or the pilot
bushing-to-input shaft interface has too much friction which is causing
the input shaft to continue spinning. You can confirm this if you
gently ease it into reverse and hear the gears ratcheting together
without coming to a stop in a couple of seconds.

If your Jeep had sat at some point, read on...

I had a similar problem with my '94 YJ (also 2.5L, MT) - it was fine
when cool, but acted up once the engine warmed up, but was
intermittent. I'd either have to go into 4th or 5th before entering a
lower gear once stopped or kill the engine to shift into 1st.

After disassembly, the clutch and it's components all looked great but
the transmission input shaft was ratty looking - this jeep had been
parked for 8-10 months before I bought it which probably contributed to
the problem. It didn't do it at first, but rather appeared a few months
after I had been driving it. I separated the transmission from the
engine, gently polished the input shaft up with some crocus cloth
enough to get the surface rust off, regreased it, and it was fine
since.


Spdloader wrote:
> 1994 Wrangler 2.5l 4cyl, with 5spd. Don't know which 5spd.
>
> It is terribly hard to downshift into 1st, 2nd or Reverse when stopped.
> It'll
> shift just fine if slightly rolling.
>
> Upshifting is no problem.
>
> I'm definitely not a transmission mechanic.
>
> Ideas? Have it rebuilt? Synchros? Shifter fork? Clutch Slave?
>
> Thanks in advance for any ideas.
>
> Spdloader

Re: Hard Downshifting
 

'94 and '95 have external slaves, I believe late '93 also but I'm not
100% sure on that.

-jd

Re: Hard Downshifting
 

'94 and '95 have external slaves, I believe late '93 also but I'm not
100% sure on that.

-jd

Re: Hard Downshifting
 

'94 and '95 have external slaves, I believe late '93 also but I'm not
100% sure on that.

-jd

Re: Hard Downshifting
 

You are correct: http://www.----------.com/temp/94YJslave.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

jdarg wrote:
>
> '94 and '95 have external slaves, I believe late '93 also but I'm not
> 100% sure on that.
>
> -jd

Re: Hard Downshifting
 

You are correct: http://www.----------.com/temp/94YJslave.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

jdarg wrote:
>
> '94 and '95 have external slaves, I believe late '93 also but I'm not
> 100% sure on that.
>
> -jd

Re: Hard Downshifting
 

You are correct: http://www.----------.com/temp/94YJslave.jpg
God Bless America, Bill O|||||||O
mailto:--------------------

jdarg wrote:
>
> '94 and '95 have external slaves, I believe late '93 also but I'm not
> 100% sure on that.
>
> -jd

Update
 

I bled the slave with no sign of air, assuming I'd see it as if I were
bleeding the brakes, the clutch master cylinder was full at the start, and I
kept it that way during the process.

No change in the problem.

Spdloader



"jdarg" <ruhle@hotmail.com> wrote in message
news:1131743014.121647.243160@g44g2000cwa.googlegr oups.com...
> It's not an internal problem, almost certainly clutch (or clutch
> hydraulics) related. Your input shaft is turning with the engine, maybe
> not way up at idle RPM but more than normal, when you press the pedal
> to the floor. The clutch is not completely disengaging or the pilot
> bushing-to-input shaft interface has too much friction which is causing
> the input shaft to continue spinning. You can confirm this if you
> gently ease it into reverse and hear the gears ratcheting together
> without coming to a stop in a couple of seconds.
>
> If your Jeep had sat at some point, read on...
>
> I had a similar problem with my '94 YJ (also 2.5L, MT) - it was fine
> when cool, but acted up once the engine warmed up, but was
> intermittent. I'd either have to go into 4th or 5th before entering a
> lower gear once stopped or kill the engine to shift into 1st.
>
> After disassembly, the clutch and it's components all looked great but
> the transmission input shaft was ratty looking - this jeep had been
> parked for 8-10 months before I bought it which probably contributed to
> the problem. It didn't do it at first, but rather appeared a few months
> after I had been driving it. I separated the transmission from the
> engine, gently polished the input shaft up with some crocus cloth
> enough to get the surface rust off, regreased it, and it was fine
> since.
>
>
> Spdloader wrote:
>> 1994 Wrangler 2.5l 4cyl, with 5spd. Don't know which 5spd.
>>
>> It is terribly hard to downshift into 1st, 2nd or Reverse when stopped.
>> It'll
>> shift just fine if slightly rolling.
>>
>> Upshifting is no problem.
>>
>> I'm definitely not a transmission mechanic.
>>
>> Ideas? Have it rebuilt? Synchros? Shifter fork? Clutch Slave?
>>
>> Thanks in advance for any ideas.
>>
>> Spdloader
>

Update
 

I bled the slave with no sign of air, assuming I'd see it as if I were
bleeding the brakes, the clutch master cylinder was full at the start, and I
kept it that way during the process.

No change in the problem.

Spdloader



"jdarg" <ruhle@hotmail.com> wrote in message
news:1131743014.121647.243160@g44g2000cwa.googlegr oups.com...
> It's not an internal problem, almost certainly clutch (or clutch
> hydraulics) related. Your input shaft is turning with the engine, maybe
> not way up at idle RPM but more than normal, when you press the pedal
> to the floor. The clutch is not completely disengaging or the pilot
> bushing-to-input shaft interface has too much friction which is causing
> the input shaft to continue spinning. You can confirm this if you
> gently ease it into reverse and hear the gears ratcheting together
> without coming to a stop in a couple of seconds.
>
> If your Jeep had sat at some point, read on...
>
> I had a similar problem with my '94 YJ (also 2.5L, MT) - it was fine
> when cool, but acted up once the engine warmed up, but was
> intermittent. I'd either have to go into 4th or 5th before entering a
> lower gear once stopped or kill the engine to shift into 1st.
>
> After disassembly, the clutch and it's components all looked great but
> the transmission input shaft was ratty looking - this jeep had been
> parked for 8-10 months before I bought it which probably contributed to
> the problem. It didn't do it at first, but rather appeared a few months
> after I had been driving it. I separated the transmission from the
> engine, gently polished the input shaft up with some crocus cloth
> enough to get the surface rust off, regreased it, and it was fine
> since.
>
>
> Spdloader wrote:
>> 1994 Wrangler 2.5l 4cyl, with 5spd. Don't know which 5spd.
>>
>> It is terribly hard to downshift into 1st, 2nd or Reverse when stopped.
>> It'll
>> shift just fine if slightly rolling.
>>
>> Upshifting is no problem.
>>
>> I'm definitely not a transmission mechanic.
>>
>> Ideas? Have it rebuilt? Synchros? Shifter fork? Clutch Slave?
>>
>> Thanks in advance for any ideas.
>>
>> Spdloader
>