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  #13  
Old 01-20-2014, 02:50 PM
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Re: My dads '99 WJ laredo. HELP!!!!!!

That is true. The readout was fine and there were no codes. We checked everything on the engine. Could it be that the transmission needs a flush? Kinda feels like it could be overheating or bad fluid. Also, is there anything special that you have to do when you bleed the brakes?
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  #14  
Old 01-21-2014, 12:09 AM
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Re: My dads '99 WJ laredo. HELP!!!!!!

A transmission flush wont solve any of your problems... I am not sure you are grasping what I am saying, on a manual linkage throttle body (non electronic throttle control) the ONLY thing that will prevent it from rising in rpms is an inability to injest air (something clogged in the intake), inability to adequately fuel for the incoming air (sensor wiggin out not telling the pcm that there is more air coming in, or an inability for it to know when to properly add fuel (cam or crank sensor)). or an inability to move the air out of the engine (like clogged exhaust). PERIOD...

If for some reason a transmission was failing and it was preventing the rpms from going up when pressing the throttle the jeep would not be idling, it would be dying, either it is holding the motor stopped or its not holding the motor, not just holding it at idle.

Considering the symptoms and the lack of codes my guess would either be a non monitored issue like fuel pressure or plugged exhaust or intake (typically its an exhaust issue but hell, it could be a rodent nest in the air box, it drives until it sucks up enough to plug the filter then you have your issue, shut the jeep off and enough of it drops back down into the box that it runs fine... never seen or heard of that before, just sayin... so it would either be that OR the PCM, and the reason you dont have codes is not because there are none being generated by sensors out of the set thresholds, but that the PCM is failing and not seeing the concern or wiping its memory of the event.
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  #15  
Old 04-06-2014, 05:19 PM
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Re: My dads '99 WJ laredo. HELP!!!!!!

So with the transfer case, my dad wants to just swap it for the Select trac. Any suggestions? On the junk yards i see them for around $200. Also my dad needs to change the brake calipers and flush the system. Is there any special procedure for doing that in the vehicle with ABS?
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Old 04-10-2014, 10:41 AM
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Re: My dads '99 WJ laredo. HELP!!!!!!

Quote:
Originally Posted by Tuzmaster View Post
Hey all

Second, the transfer case is acting weird. If the rear wheels spin, the front almost never kick in. However the 4LO works fine and all wheels are spinning. I know there is no traction control of any form so I do not know what is going on there. No codes are there either.
This is an issue that's been around for a long time.

Back in 2001 when I had my 99 WJ, I was having the same thing and found that everyone was having the same problem.

There was no fix at the time which is why I got rid of it.


EDIT:
When I had my 02 WJ, I did the SelecTrac swap in it (old one was falling apart)
You will have to find a Tcase from a V8 model, and I think you'll have to get the driveshaft as well.
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