help me identify this noise (chirp)
01-22-12, 11:52 PM
#1
help me identify this noise (chirp)
http://www.youtube.com/watch?v=bzwnv...ature=youtu.be
help me identify this high pitched chirp noise coming from one of the accessories connected to the serpentine belt. it sounds like a bearing, but not sure where it's coming from. alternator? water pump? or maybe one of the pulleys? the car is a 2006 is250 with 67,000 miles. i have the a/c on for the first half, then i turn it off. my guess is it's coming from the alternator. i did take the belt off and spin each pulley by hand, but was not able to recreate the chirp. i also replaced the belt since i had it off.
help me identify this high pitched chirp noise coming from one of the accessories connected to the serpentine belt. it sounds like a bearing, but not sure where it's coming from. alternator? water pump? or maybe one of the pulleys? the car is a 2006 is250 with 67,000 miles. i have the a/c on for the first half, then i turn it off. my guess is it's coming from the alternator. i did take the belt off and spin each pulley by hand, but was not able to recreate the chirp. i also replaced the belt since i had it off.
01-23-12, 01:45 AM
#2
Purchase or borrow an adjustable strobe light
Strobe Light on Amazon
Mark each pulley with a white dot. Sync the strobe light with the sound of the squeak. Point the strobe toward the front of the car, the pulley that has the dot staying in the same place is where the problem is.
Back in the old days we would just use a timing light but they won't work with the coil ignition system.
Good luck!
Strobe Light on Amazon
Mark each pulley with a white dot. Sync the strobe light with the sound of the squeak. Point the strobe toward the front of the car, the pulley that has the dot staying in the same place is where the problem is.
Back in the old days we would just use a timing light but they won't work with the coil ignition system.
Good luck!
01-23-12, 04:09 AM
#4
Super Moderator
01-24-12, 08:37 AM
#5
Purchase or borrow an adjustable strobe light
Strobe Light on Amazon
Mark each pulley with a white dot. Sync the strobe light with the sound of the squeak. Point the strobe toward the front of the car, the pulley that has the dot staying in the same place is where the problem is.
Back in the old days we would just use a timing light but they won't work with the coil ignition system.
Good luck!
Strobe Light on Amazon
Mark each pulley with a white dot. Sync the strobe light with the sound of the squeak. Point the strobe toward the front of the car, the pulley that has the dot staying in the same place is where the problem is.
Back in the old days we would just use a timing light but they won't work with the coil ignition system.
Good luck!
thanks for the replies thus far!
Trending Topics
01-25-12, 08:10 AM
#10
I guess it could be any one of the pulleys? i wish there was a way to just isolate each pulley to pinpoint the noise.
I did remove the belt and spun each pulley by hand, but I couldn't recreate the noise. Now I'm wondering if it's not any of the pulleys at all and something else? Someone on here reported that their noise turned out to be a timing bearing.
01-25-12, 11:44 AM
#11
A timing bearing? Perhaps what was meant was one of the sprockets that spin the timing chain. It's definitely not an engine bearing...it is external to the engine itself. Nosies like this are so hard to track, but unless I could hear it inside the cabin it's not bad enough to worry about...yet.
01-25-12, 02:23 PM
#12
A timing bearing? Perhaps what was meant was one of the sprockets that spin the timing chain. It's definitely not an engine bearing...it is external to the engine itself. Nosies like this are so hard to track, but unless I could hear it inside the cabin it's not bad enough to worry about...yet.