Question about 1989 Jeep Comanche

1 Answer

Truck strains to move forward when starting from a stop.

I have a '89 Jeep Comanchee with a 4 speed AW-4 tansmission. When first starting vehical from cold the engine strains to move forward, makes creaking sounds as it move (feel similar to power braking). This problem will persist until warm then it becomes sluggish from a stop, seems fine once truck is moving at speed. Oddly this problem does not happen at all in reverse. I assumed a clogged filter so that has been changed with the proper amount and kind of fluid replaced. the fluid was old but was not burnt or fowled that I could tell. I'm at a loss. I've also checked that the breaks were not locking.

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  • shane_agnew May 29, 2009

    I can try the jackstand method this weekend see what the outcome will be. 

  • shane_agnew Jun 13, 2009

    Thank, thundergod...
    it did not take long once i raised both rear tires to see what the problem actually was. The passenger rear drum had set too tight. Appreciate the tip.

  • Richard Scordino May 11, 2010

    Waiting to hear back...be very careful...dont want to hear about you driving through a building or running anyone over!!

  • Richard Scordino May 11, 2010

    I'd be interested to see what it does with all four wheels off the ground either use four good jackstands on solid ground (cement) or have a shop put on a lift overnight and see what it does in the AM

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  • Jeep Master
  • 6,982 Answers

Glad to help. Check those brake linings for any signs of burning...If they have been running too tight it is possible that they have overheated a bit. Also check the emergency brake cable for binding sometimes they get rusted up and stick.

Posted on Jun 13, 2009

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1992 jeep wrangler will not go forward only reverse has standard transmission


does dont move mean it slips

can you move throttle to say 3000 rpm and car will not move.

this is gross slip. or FLare. RPM matters. here.

why?, because the engine must be good, to move forward.



hot and cold engine? no move forward.? or both?

standard means manual transmission.

so the clutch is bad.

my guess is you meant it has a A/T box.

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apples and oranges diffr.

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4.

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hydramatic.

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???????

is the shifter moving the shift side crank on tranny correctly?

this takes careful observation .





  1. level checks, and lever action.


  2. replace the filter now. was this step skipped for 22 years?


  3. get the full flush no , may be the AFT fuild types were mixed up?


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  6. whats next depends on %5


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you will never get to the stall test because the tranny slips. test 6



see yJ 93, tranny

http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

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Transmission


Transmission
Typo and model:
1.- 4-speed automatic AW-30-40 (6cil start of 1993)
2.- 4-speed automatic 42RE ( 6cil 1993)
3.- 4-speed automatic 46RH ( V8, 1993-1995)
4.- 4-speed automatic 44RE ( 5.2L V8, 1996)
5.- 4-speed automatic 46RE ( 5.9L V8, 1998)
6.- 5-speed automatic 45RFE( 4.7L V8, 1999 in WJ)

Enter the VIN in here: http://jeep.avtograd.ru/VIN/vin_en.asp

Also cHeck this info: http://www.jeep.com/en/4x4/systems_by_vehicle/

Good luck!!!

Dec 05, 2008 | 1993 Jeep Grand Cherokee

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1996 SPORT JEEP


Hi LINDA101162,

Confirm you have an automatic transmission (sorry to have to ask).

It depends on the type of transmission you have.

AW-4 - Yes
Not AW-4 - No

It's pretty easy to check though. Get a flashlight.
  • Look under the vehicle at the transmission. You're looking for an I.D. tag just above the pan. You only need to find it, not read it. No need to go underneath.
  • Look from both sides.
  • If you find the tag on the right (passenger) side, It's an AW-4 (OK to use)
  • If you find it on the left or don't find one, then it's not an AW-4 (Not OK to use)
If you have any other questions, click the ASK button.

Remember: Good things come to those who Rate!!!

Mike

Aug 06, 2008 | 1996 Jeep Grand Cherokee

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