'94 Grand Cherokee chirping sound coming from engine?
I have a 1994 Grand Cherokee Laredo 5.2L V8 AT.
When the engine is cold, or has been sitting for a few hours (unless under extreme high temperatures), the engine area produces a "chirping sound." After the engine has been running (10-12 miles), the chirp quiets down. The sound is loudest when I accelerate.
I've had a new water pump installed, as well as the idling/tension pulley and new serpertine belt.
The serpentine belt is NAPA, not a factory Jeep belt. I've had mechanics say putting a factory belt on it might help. Does anyone think, in addition to installing a factory belt, that the problem could be a bad bearing in the alternator?
The voltage gauge in the instrument panel cluster hovers around 11-13, which is a little lower than that in my 1994 Cherokee SE 4.0L.
Thanks for any input. The chirping drives me nuts!
I just drove the Jeep early this morning for about 5-6 miles. When I started it, it started the chirping in the park position. As I started out, it was chirping up a storm. Towards the end of the drive, if I let off the gas, the chirping quieted down some, but started back up very loud as I accelerated.
It really sounds like something that needs to warm up in order for the chirping to calm down.
So just try to tighten the tension pulley as the engine is running? Thanks.
listen around all the pulleys. i have had an idler pulley, a harmonic balancer and an AC clutch chirp at me. sounds like it could be a tensioner too. your gonna have to listen to find out what pulley it is. if i were you i would try to find the squeaky pulley by either listening to it or looking for a slight wobble. if you think you found it and it is infact a pulley with an external bearing on it, i would squirt some spray lube on it. if it shuts up, thats your pulley. even if the lube shuts it up replace it because it could fail at any time leaving you stranded.
i need some ideas I bought two alternators from a junkyard and they where tested good. I took it to auto zone they said its no good no charge or voltage ? i put it in my car it work for a day then stop so the junkyard sent me one again and that one i took to auto zone they said it was no good i put it in and no charge 000... if the junkyard is saying its good and it testing bad at auto zone are the alternators really bad or is it a voltage thing? i had AAA come out 6 times and they said the alternator no good. so i called car-go alternators and starters they said it might be my ecu? but i dont what to jump to far if it the alternator thats bad? i just order a new alternator i hope this works. if not is it the ecu pcm. by the whey what is the black box on the back of the alternator?