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Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > AW4 Transmission help please

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Unread 03-30-2013, 06:32 PM   #1
Nhagar
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AW4 Transmission help please

ok I have a 98 Cherokee 4.0L with auto trans.

Ok I need help with this thing. When I put it in OD postion and go. I can feel it shift through the gears but when I get to say 50mph I am running 3000-3500 RPMs. If I let off the gas the rpms instantly drop to 1500rpms. Now if i get on the gas just a bit to get the rpms up to 2000. The motor revs but its not pulling/accelerating. if I give it more gas I can then fill it start pulling again at the 3000 rpms again.

Now if I get up to 50mph and rpms are high if I let off the gas rpms drop to 1500. I can then manually put the shifter into 3 position and then the rpms jump up and it downshifts into 3rd.

so I know it is or assume it is shifting through all the gears.

What can I do to get the OD to work and be able to drive 50+mph without over revving the motor?

I have replaced TPS and did the adjustment trick.
Need to know if I can fix or if Rebuild is in the near future.

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Unread 03-31-2013, 09:24 AM   #2
M35A2
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What size tires are on it?
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Unread 03-31-2013, 10:07 AM   #3
Nhagar
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they are stock wheels and tires. well actually I think that maybe I went from 225 to 235's so I could get 8 ply tires instead of 6 ply.
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Unread 03-31-2013, 10:13 AM   #4
CJ7-Tim
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Did you install a genuine Jeep TPS, or did you install some crappy Chinese "Lifetime Warranty" junk ? Cheap crappy "Lifetime Warranty" parts are often out of specification or even failed right out of the box. Many times they have a short service life before they fail. Always buy top quality replacement parts and genuine Jeep sensors.

Make sure your transmission fluid is clean, and filled to the correct level. The AW-4 transmission uses Dexron-III/Mercon transmission fluid. Any other transmission fluid type may cause strange shifting.

Go here - http://www.jeepforum.com/forum/f11/t...ks-tsbs-89273/ - and find the AW-4 Service and Diagnostics Manuals. Perform the tests and follow the diagnostic procedures.
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Unread 03-31-2013, 10:40 AM   #5
Nhagar
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i have bought both the cheap one from autozone and one from dodge dealership. I did change fluid after issue started. it is correct fluid and filled.

I will look over link and see what i find thanks nathan
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Unread 04-09-2013, 08:40 PM   #6
M35A2
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The kick down cable might need adjusting.
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Unread 04-09-2013, 09:05 PM   #7
Paradise XJ
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Like so:
http://naxja.org/forum/showthread.php?t=1015963

Possible, but the TPS controls the kickdown (thanks, cruiser54) this is the Throttle Valve adjustment...still important.

Tim is on the right track...sounds to me like your torque converter isn't locking up...or a solenoid problem, easily fixable. I had a similar problem on my Volvo...except the OD solenoid cost me $150+
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Unread 04-10-2013, 01:03 PM   #8
Nhagar
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well I have looked up the shifting solenoids and they seemed to be in the $125ea range and there are 3. question is replace all three and get it over with or chance it one doing just the one.

also are there cheper ones than 125ea? let me know thanks guys.
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