When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Started squealing first only when engine was cold, stopped after it warmed up. It did this for three or four days, now the squealing is louder and doesn't go away. It gets higher pitched as you accelerate. Any ideas?
Check your drivebelt pulleys. If you take it to a repair they will probably tell you its your water pump. Had a similar problem with my 5.0L AWD last year it took about 20 min to change. The parts (2 pulleys) cost $25.00. Pep boys quoted $202.00 to change the water pump or $508.00 if they borke a hard to remove bolt on the pump and replace the timing cover. So if I were you I would have the pulleys checked first. Beware of the water pump theory.
If you can't isolate the noise while the engine is running. I would take the belt off and spin all the pulleys, accessories by hand to find any loose bearing, binding, etc.
I had a squealing problem on mine too. It turned out to be the AC clutch was making the noise when it is free wheeling. It was a high-pitched scratching noise. It still spins ok, just making noise, I guess the bearing is going soon.
I have a 95 Explorer and I have the same squealing noise. I replaced just about everything the belt spins and the squealing continued. I took the belt off and ran the engine and the squealing still continued. It squeals at startup and then stops when it warms up. I have read about a couple of folks with the same problem, but I have not seen the reason or the solution yet. Is there anyone out there that has beat this problem. Thanks.
for a quick check, one by one spray WD40 on each pulley shaft (with engine off for safety) until it stops squealing. then change out the part. Mine did exactly as yours is and my issue was the upper idler pulley.
Thanks Mason for the solution to my problem. It was the camshaft position sensor. I had it replaced. The shaft of the sensor was seizing up. I could barely turn it by hand when it was removed. The part was $434 and the labor was $243, a little costly but the car has never giving me any trouble in the 208,000 miles I have owned it.