Originally Posted by NewKindOfClown

You realize 1.3 million Cherokees were built, and almost every single one still has a mechanical fan. Right? And many of them likely still have the original clutch. They're due to be replaced after all this time, but many still haven't been.

Originally Posted by ReaperXJ99

I didn't know that would affect the steering that badly. That's definitely a definitive answer I've been looking for. It's affecting my steering by putting a greater strain on my hubs, tie rod, and ball joints. It's also affecting the way it handles on the road, and it's not fun.

Originally Posted by BrawnyDog

Ok since it is likely my fan clutch should I just get an auto zone special or do I need to go oem?

Originally Posted by Nasty4.0

Well yea that makes sense but that doesn't mean they are good enough I live in Denver and it's a pretty common occurrence for xjs to get hot in traffic the mechanical fan just doesn't move enough air I have a brand new fan clutch that does the job but it could be much better with electric fans that adjust fan speed on their own

Originally Posted by rcguymike

Sounds like you have and alignment or other underlying issue...

Originally Posted by ReaperXJ99

I took it to a shop this week and they claim there nothing wrong with it.

Originally Posted by whitetrailcherokee

so my 2001 wj dies when I'm driving and idling... ik this has been answered but I had a detail question.. so I cleaned the throttle very very well it looks new now and cleaned the maf and the iac sensors with maf cleaner but cleaned the sensors with maf cleaner.. would it be better to clean the idle sensor with throttle cleaner or does it matter.. it looks less gunky kind of bronzy and the tips silver. thanks for the reply this is the site I was looking at http://www.jeepforum.com/forum/f11/2...idling-859664/

Originally Posted by XJwonders

junk the WJ. it isn't worth spending any dime or a minute of your time.

Originally Posted by 1991Jeep_Man

Nah, that ChryCo transmission is a beauty of modern ingenuity!

Originally Posted by rcguymike

Sorry, you might have put me on a question rationing plan... but so far you guys have been a great wealth of info and I'm learning a lot. Just recently I've started getting a short, quick jerking while driving. It occurs most noticeably between 40-60mph under light acceleration. As soon as I let off or apply more than what it takes to simply maintain speed the jerking/hesitating stops. It's not constant and it fluctuates in intensity. I've tried downshifting to 3rd and the same phenomenon. The RPMS seem to stay steady and it only happens when the torque converter locks. Moderate to heavy acceleration no problems and the shifting between gears feels just as solid as before. If my fluid is a bit over max on the dipstick could that cause it? I've been reading maybe TPS or ignition. I haven't gotten around to a full ignition tune up but spark plugs are new as of a month or so ago. Leaving for work trips starting next Tuesday so I won't have time to order and receive parts and do that until I get back on one of my breaks. Thanks in advance!

Edit: '99 216kmi keep forgetting.

Originally Posted by salad

Throttle position sensor.

Ever had a stereo with a sketchy volume ****? How in that sweet spot you always turn it up to, it's really crackly and you've gotta mess with it to get it to stop, or just turn it up more?

The TPS is identical to a volume ****. But instead of attenuating a sound into an amplifier, the PCM reads it as throttle position.

You can test this with an analog multimeter. Hook it up an start working the throttle. You should see the needle increasing (or decreasing, depending on which pins you connect), and then it will suddenly spaz out at a certain spot. Same thing will show up with an OBD-II scanner, but be throttle percent instead of a voltage or resistance.

Originally Posted by rcguymike

I went real slow with my expensive digital meter and didn't see any jumps. I'll pullout my crappy analog one and see if it does it. But new turn of events I'm now getting a MAP sensor code and it now dies occasionally while idling, but seems to idle better in gear. Would both TPS and MAP go out near the same time? Getting down to 1.2 PSI idling not in gear and generally 4-6 psi idling in gear. Also it drops to 1.2 PSI sometimes when it does the jerking at cruising speeds. I think the CAN bus just isn't fast enough. My 2013 Jeep is light-years faster than this one at updating sensor readings.

Edit: 2 MAP codes actually P0107 and P1296

Edit 2: Yup, checked TPS with analog meter up and down a few times nice and smooth.

Originally Posted by rcguymike

So replaced the map sensor and still getting the jerking and towards the end of my test drive I got the P0107 map circuit low code again...? Can the IAC or TPS trick the computer into thinking the MAP is bad? It seems to studder fairly regularly at idle in neutral and when you pop it into drive it goes rock solid with the idle. It also died on me once when I shifted it to park. The PSI never went below 4.2 this time. With the old sensor it would drop to 1.2PSI randomly. I'm getting about ready to submit and bring it to the dealer. Any more ideas or should I try replacing the TPS and/or IAC too?

Originally Posted by rcguymike

Hi...It's me again...
Replaced TPS this morning no change. What on earth could this be!?

Originally Posted by XJwonders

junk the WJ. it isn't worth spending any dime or a minute of your time.

Originally Posted by whitetrailcherokee

so my 1999 xj dies when I'm driving and idling... ik this has been answered but I had a detail question.. so I cleaned the throttle very very well it looks new now and cleaned the maf and the iac sensors with maf cleaner but cleaned the sensors with maf cleaner.. would it be better to clean the idle sensor with throttle cleaner or does it matter.. it looks less gunky kind of bronzy and the tips silver. thanks for the reply this is the site I was looking at http://www.jeepforum.com/forum/f11/2...idling-859664/