Curt

I've messed with the TPS adjustment and it didn't seem to make much difference. I was hoping to set it correctly before trying something else. What gets me is it idles just fine when the engine is cold, but after it warms up it stumbles. I've ohmed out the temp sensors, and although I don't know what they should read, the value does change from cold to hot. The EGR valve has been disconnected for a long time. Spraying it with carb cleaner while running doesn't indicate a vacuum leak. The CAT has been hollow for a long time. I have no idea what happened to the stuff inside it. ;) Hey, my MJ is the same color as yours, what are the odds? Mine is taller, though. :D

I had a vacuum leak a while back so I replaced hoses and eliminated the rubber block coming off the TB. I don't think my problem is vacuum related, but thanks for the suggestion. I found a link to a manual that gave instructions on R&Ring the TPS and I thought it would help me, but it said after installing the TPS to take it to a dealer for adjustment. Bah! I've tried screwing the adjustment screw out on the ISA a bit and that helped briefly, but I think the ECM just compensated by by pulling the ISA in farther. Double bah! It's warming up and I need to start running the A/C, but I need another foot so I can use clutch, brake, and throttle when I pull up to a stop sign.

Low enough that it shakes, especially if I add if I add just a bit more load, like turning the fan on high or turning on the lights.

I've been searching the forums for how to do this, but all I've found is info on the 4.0. Could someone point me in the right direction, please? I just replaced the idle speed motor which seems to work, but after the engine warms up it idles just a little slow. Any ideas other than the TPS?

I guess it's time to start hitting the junkyards. Can anyone tell me what years had the same motor as my MJ?

Thanks for the info on MJ. I take it parts are hard to come by?

The little electric motor in mine has quit. Anyone have one for sale? oh, and: I've owned this truck since new, and I don't know what MJ means. :oops: I might know what the J stands for...