4.0 Engine Sqeaking/Noise?
I have a 98 ZJ 4.0, that has a squeaking noise. It all started after I replaced some parts. The following is what has happened and any help would be appritated. The radiator was leaking. I replaced the radiator and desided to do the water pump and thermostat at the same time. So I replaced all that and then test drove the jeep and it was running fine. All of a sudden a couple days later it started squeaking. I then desided to jump in and see what is going on. I thought at first maybe I had a defective water pump, and had a couple of people take a look at it and say it looked defective. So I pulled the pump back off and took the water pump back and replaced it again. The sqeaking was still there. Then I thought well maybe it's the idler pulleys going bad so I replaced both of the pulleys.(The adjustable one and the stationary one) That did not take care of it. I started testing where the noise was coming from, I thought it was the A/C unit. I went down to advanced auto parts and picked up an A/C eliminator pulley and tried that. Still there. At that point I was very frustrated and pulled the altenator off and took that down to advanced auto parts and had that tested. That turned out good. Now at this point I was thinking it was the power steering pump pulley but I would think if that was going bad I would here it squeal when turning the wheel. And it squeals no matter what is going on. I rinsed off the belt before I put it back on this time and the noise was gone. Then I am guessing here that after the belt dried off it started sqealing again. So I sprayed some water on the belt while the jeep was running and the noise went away. Then it would come back. It does that all the time. After I spray a little water or PB blaster on the belt, the noise will go away. Then come back after a souple of minutes. And that's where I am at.