1999 LX470 - 173k miles
My engine has a whirring and constant chirping sound associated with rpms in the 2k and above range. The whirring gets louder as the rpms increase.
When I remove the serpentine belt and run the engine in the 2k plus rpm range the whirring sound does not exist. The chirp does not exist when the engine is run without the serp. belt.
I just replaced the serpentine belt tensioner pulley bearing and the serp. belt idler pulley. New belt coming Friday. New ATF fluid for a Power Steering fluid flush but there is plenty of fluid in there now.
I noticed the fan seems to wobble a little and the chirp sounds like it may be coming from the fan clutch/fan bracket area.
Does the fan clutch have a bearing that goes bad or would this wobble come from the bracket? Im getting close to needing another timing belt job (done at 88k, mileage is 173k now) so if it is the bracket Im thinking I may just do the timing belt/water pump and replace the fan bracket as well.
My engine has a whirring and constant chirping sound associated with rpms in the 2k and above range. The whirring gets louder as the rpms increase.
When I remove the serpentine belt and run the engine in the 2k plus rpm range the whirring sound does not exist. The chirp does not exist when the engine is run without the serp. belt.
I just replaced the serpentine belt tensioner pulley bearing and the serp. belt idler pulley. New belt coming Friday. New ATF fluid for a Power Steering fluid flush but there is plenty of fluid in there now.
I noticed the fan seems to wobble a little and the chirp sounds like it may be coming from the fan clutch/fan bracket area.
Does the fan clutch have a bearing that goes bad or would this wobble come from the bracket? Im getting close to needing another timing belt job (done at 88k, mileage is 173k now) so if it is the bracket Im thinking I may just do the timing belt/water pump and replace the fan bracket as well.
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