AW4 transmission - late shifts when cold - JeepForum.com

 
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post #1 of 5 Old 01-28-2013, 03:41 AM Thread Starter
AVR2
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2002 WJ 
 
Join Date: Apr 2007
Location: UK
Posts: 3,665
AW4 transmission - late shifts when cold

When my AW4 is cold, it takes anything from five to ten seconds to find the gear when going from P to R (which is always my first gearshift when starting in the morning). It also suffers from late shifting from 1 to 2 while cold, and I typically have to lift off the throttle before it will shift (sometimes I have to do this two or three times before I get the first 1-2 shift). Once it's warmed up, everything's fine.

Just to be clear, the trans fluid is recent (I drained and refilled 5 times over a couple of weeks so hopefully there is no old fluid left) and the TV cable is correctly adjusted. I'm assuming that it's just a case of the trans being old, tired and in need of a rebuild, but I thought I'd ask just in case anyone can suggest any cheaper possibilities for a fix, such as solenoids or whatever.

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post #2 of 5 Old 01-28-2013, 07:29 AM
Mark05059
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1989 YJ Wrangler 
 
Join Date: Mar 2009
Location: quechee Vermont
Posts: 4,699
let it warm up before heading out.. trans in gear transfer case in neutral and wheels blocked. Idling to "warm it up" does nothing in getting the transmission warm.

1998 ZJ 5.2 Auto

1989 Wrangler Black Bone Stock 2.5l 5spd
/l , [____],
|---L--[]lllllll[]-
()_) ()_)==O=)_)
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post #3 of 5 Old 02-19-2013, 10:09 AM
davidmatlack
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1996 ZJ 
 
Join Date: Aug 2012
Location: rocky mount
Posts: 185
Tranny Relay in Power Mgmt Box?

I just replaced this at 254k and feel the tranny is responding faster and smoother. I wasn't having any probelms with it but had just replaced the relay for the AC clutch which was acting up.

best
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post #4 of 5 Old 02-19-2013, 03:59 PM
jnowak
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1993 ZJ 
 
Join Date: Nov 2011
Location: dahlonega
Posts: 495
Quote:
Originally Posted by AVR2 View Post
When my AW4 is cold, it takes anything from five to ten seconds to find the gear when going from P to R (which is always my first gearshift when starting in the morning). It also suffers from late shifting from 1 to 2 while cold, and I typically have to lift off the throttle before it will shift (sometimes I have to do this two or three times before I get the first 1-2 shift). Once it's warmed up, everything's fine.

Just to be clear, the trans fluid is recent (I drained and refilled 5 times over a couple of weeks so hopefully there is no old fluid left) and the TV cable is correctly adjusted. I'm assuming that it's just a case of the trans being old, tired and in need of a rebuild, but I thought I'd ask just in case anyone can suggest any cheaper possibilities for a fix, such as solenoids or whatever.
It's a different tranny put same problem. My c6 does that and its a internal leak somewhere in the pump/tc. Over nite the pump/tc drains and has to fill back up. Is there a big thud/jerk when it does go into gear?
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post #5 of 5 Old 02-19-2013, 04:20 PM
larry33
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Join Date: Feb 2013
Posts: 1
Quote:
Originally Posted by AVR2
When my AW4 is cold, it takes anything from five to ten seconds to find the gear when going from P to R (which is always my first gearshift when starting in the morning). It also suffers from late shifting from 1 to 2 while cold, and I typically have to lift off the throttle before it will shift (sometimes I have to do this two or three times before I get the first 1-2 shift). Once it's warmed up, everything's fine.

Just to be clear, the trans fluid is recent (I drained and refilled 5 times over a couple of weeks so hopefully there is no old fluid left) and the TV cable is correctly adjusted. I'm assuming that it's just a case of the trans being old, tired and in need of a rebuild, but I thought I'd ask just in case anyone can suggest any cheaper possibilities for a fix, such as solenoids or whatever.
I had the exat same problem in my 95 zj. I added the lucas stop slip/leak fluid. Over the last 2 weeks i has gotten almost back to normal
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