1999 Jeep cherokee transmission issue - JeepForum.com
 
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post #1 of 7 Old 06-19-2019, 01:32 PM Thread Starter
Mud4Life
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1999 Jeep cherokee transmission issue

I have a 99 xj sport 4.0L aw4. When I got the Jeep it “needed a trans” it was stuck in 4th gear when it was in drive. When shifting manually the Jeep didn’t slip or anything. Drove fine. First I changed the throttle body with another I had and it started shifting better. Then it started slipping again. I ended up taking solenoids out of another aw4 I had and changing the fluid. It shifted fine and didn’t slip for about 15 minutes. Then it started slipping again. I took another aw4 I had and swapped the whole trans out and added new fluid. Now it is shifting between gears in drive, but is slipping into gear and slipping while driving. It has the correct amount of fluid in it. Anything else I should try before trying a different trans? I’m not sure what condition this new trans is in, but I’ve never really had a bad aw4. I also adjusted the kickdown cable. Thanks!


97 wrangler sport 3.25" sl, 1.25" bl, 35.
93 cherokee sport
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post #2 of 7 Old 06-19-2019, 04:06 PM
CJ7-Tim
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Are you using Dexron-III/Mercon transmission fluid, and filling/checking for the correct level of fluid ?

Is the Check Engine Light ON ?

What year XJ was the donor of the swapped transmission ? Not all AW-4's interchange.


I would go on the Google and find the Jeep AW-4 Service Manual. In the manual is filled with diagnostic and testing information. Shot gunning random parts at an undiagnosed problem is seldom very effective.

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post #3 of 7 Old 06-19-2019, 04:16 PM
jtec
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this is a 1999 so I would suggest a SCANNER to see if any codes.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #4 of 7 Old 06-24-2019, 06:23 AM Thread Starter
Mud4Life
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Quote:
Originally Posted by CJ7-Tim View Post
Are you using Dexron-III/Mercon transmission fluid, and filling/checking for the correct level of fluid ?

Is the Check Engine Light ON ?

What year XJ was the donor of the swapped transmission ? Not all AW-4's interchange.

I would go on the Google and find the Jeep AW-4 Service Manual. In the manual is filled with diagnostic and testing information. Shot gunning random parts at an undiagnosed problem is seldom very effective.
I’m using atf +4 and it is at the correct level. Checked in neutral, warm, and on level ground. The check engine light is not on. My scanner only reads codes that are stored with a light on. I will look into a more advanced scanner. The Trans came out of 99. I believe they all interchange 98-01. I will try a google search as well for the manual. Anything else that might be causing this?

97 wrangler sport 3.25" sl, 1.25" bl, 35.
93 cherokee sport
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post #5 of 7 Old 06-24-2019, 06:24 AM Thread Starter
Mud4Life
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Quote:
Originally Posted by jtec View Post
this is a 1999 so I would suggest a SCANNER to see if any codes.
Will get a better scanner this morning and check it.

97 wrangler sport 3.25" sl, 1.25" bl, 35.
93 cherokee sport
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post #6 of 7 Old 06-24-2019, 08:18 AM
CJ7-Tim
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Quote:
Originally Posted by Mud4Life View Post
Im using atf +4 .
Using ATF+4 in the AW-4 has been known to cause slippage. You should be using the specified Dexron-III/Mercon.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
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post #7 of 7 Old 06-24-2019, 08:41 AM
jtec
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many of us here have the manuals, concentrate on the scan and getting correct fluid and a filter.

Do not change the fluid and filter BEFORE we check codes - don't want to drop pan again to address a internal issue.

Ask if you will want a manual and can do the trans checks - the team will help

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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