96 850 Wagon Belt Noise
#1
96 850 Wagon Belt Noise
A while back I noticed that during cold-starts with <70F outside, I would get a squealing belt noise on startup. The colder it got, the longer it would take for the noise to start, and the longer it would take for the noise to stop. When the Temp gage reached ~1/3 from bottom, the noise would typically stop. However as soon as I started to drive, the noise would return and vary with Engine RPM. I could not hear it above 2k rpm and/ or 25-30 mph due to engine/road noise.
I had the serpentine belt and tensioner assembly replaced which eliminated the while-driving squealing, but I still get the noise on startup. The belt was very old and the tensioner spring was loosening up and the pulley not moving smoothly, which all seem to be contributing factors.
The Mechanic who did these repairs is new to me as I have just moved, but he reported that all the other pulleys for the belt looked and felt fine.
The noise continues to come from the serpentine belt area, but is hard to pin-point exactly where it is coming from.
Does anyone have any suggestions and or experience with something like this?
Thanks,
-Decaff
I had the serpentine belt and tensioner assembly replaced which eliminated the while-driving squealing, but I still get the noise on startup. The belt was very old and the tensioner spring was loosening up and the pulley not moving smoothly, which all seem to be contributing factors.
The Mechanic who did these repairs is new to me as I have just moved, but he reported that all the other pulleys for the belt looked and felt fine.
The noise continues to come from the serpentine belt area, but is hard to pin-point exactly where it is coming from.
Does anyone have any suggestions and or experience with something like this?
Thanks,
-Decaff
#3
Are there other signs I should be looking for to indicate a bad alternator? What made you think of the alternator besides it also being on the Serpentine belt?
Thank you for your response,
-Decaff
#5
#6
Take the serpentine belt off and start the car.....if it is quiet, you know it is associated with the serpentine belt system, ( if not, you probably have an issue with the timing belt system). Next, put the belt back on, start the car and once it starts squealing, spray the belt with some belt dressing (you can buy a spray can of it at most auto parts stores). If it stops suealing, you have a slipping belt. If it still squeals, it is most likely a belt pulley or idler. Start small and change the pulleys and idlers. my last suggestion would be the alternator.
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