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ilirdino 11-29-2010 10:46 AM

I'm back again!
So, I've been enjoying working on the WJ. I did a backyard/garage fix for the drivers side blend door so that I have some warm air. I managed to fix the door seal so that it doesn't sag/fall down using a heat gun, some pliers, and gorilla glue. It's been fun. But, I've a few things that I need to resolve/understand and I'm hoping you guys can help.

First, my airbag light comes on periodically. When it happens, it's when I turn the steering wheel. Can anyone chime in on where I would look first to fix this issue? Has anyone experienced the same problem?

Second, I was just in the jeep and as I was making a left turn with the steering wheel turned fully to the left and I had an odd noise coming from below the vehicle. It was almost like there was something in the road that I had driven over and had slid across the underside of the jeep (although I know for a fact that there was not). Potential diagnosis?

Third, sometimes I'll turn her on and the RPMs will sit up around 3000 for approximately 20 seconds. Whenever I put it in park, it will idle between 900 and 1100 but will never stay consistent. It will surge, and then come down. And then a second later, surge up and fall back down. Clean the throttle body? IAC sensor? Both? And which sensor is the IAC, is the black or the white one by the throttle body?

Thanks so much in advance!

Frango100 11-29-2010 05:37 PM

Re: I'm back again!
First item, no idea.
Second item, when you turn the steering wheel to one of the 2 end positions, the hydraulic steering pump has to go to max pressure, what it doesn´t like too much. Try to prevent to use the end positions as little as possible. Sometimes the pump will start to make noise, or even the serpentine belt can slip when the tension is somewhat low.
Third item, when you have idle surging problems, its always a good starting point to clean out the TB thoroughly, especially the idle air passage and idle air control stepper motor plunjer. When you look at the TB on the left side (in direction of driving), you will find the TPS (throttle position sensor) on the upper position and the idle air control stepper motor on the lower. Just remove the stepper motor and clean the whole thing thoroughly.

RYANSWJ 11-30-2010 12:29 AM

Re: I'm back again!
third question answer:

had the same problem like every other WJ owner its the TPS

Here is the link to Napa Auto Parts for your 99 JEEP WJ TPS

sorry can't help on the other questions

ilirdino 12-01-2010 04:06 PM

Re: I'm back again!
After some research, I found that the airbag light could be related to the clock spring in the steering column. I've read that it delivers current to the airbags, cruise control, etc. Apparently, the airbags will not deploy if the light is illuminated and it is about a $300 fix at the dealer. I don't want to jeopardize my safety and the safety of my passengers, but I really have no plans of getting this repaired at the stealer. I think it is odd that my cruise control and steering wheel radio controls remain perfectly functional, though. Either way, I think I've diagnosed the issue. What sucks is that I don't have the money to have it repaired right now.

Thanks Frango for informing me about the intricacies of the hydraulic steering. I avoid use of the two end positions, but I was actually a passenger in my Jeep as my roommate dropped me off for class when I heard the odd noise. I guess it isn't anything to worry about.

I'm going to clean the TB and check out those sensors once the weather clears up. Hey RYANSWJ, are you certain the high/inconsistent idle is due to the TPS? I've heard that cleaning the IAC should do the trick and haven't read anything about the TPS being the issue (though maybe I haven't researched enough). Can you elaborate a little if you have a minute?

Thanks guys!

cheapjeep 12-02-2010 06:57 PM

Re: I'm back again!
1 Attachment(s)
No 3 sounds like a clockspring problem to me also. This might help.

jeepy_ramone 12-10-2010 06:01 AM

Re: I'm back again!
Here's a step by step pic guide for you. Good Luck.

ilirdino 12-19-2010 06:05 PM

Re: I'm back again!
I have a new question! Whenever I hit a pothole or drive over a speed bump I hear a squeaking noise coming from the rear/rear right. I recently had my Flowmaster 50 put on and I'm thinking it could be a bad mount or something? But what about a bad transmission mount? Maybe a bad shock? This is a recent issue that has just popped up a few weeks after having the Flowmaster installed.

Any thoughts?

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