High pitched whine from engine bay
#1
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Anyone else have this? Just started last week. Will whine for a minute then go away for a few minutes. Gets higher pitched with more RPM. Happens hot or cold. Best way to describe it would be that it sounds like a really high pitched twin screw supercharger or like the tranny in a cup car. Everytime I get to listen to it it goes away but I think it's coming from the fan area. Any tips would be appreciated
Thanks
Thanks
#2
Seared
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With the engine off, tie the belt-sensor roller back so that it no longer touches the belt. Start the engine. Did the noise stop? If so, the bearing within the roller is shot.
Other possibilities include the fan hub bearing, and the bearings within the alternator.
Andreas
Other possibilities include the fan hub bearing, and the bearings within the alternator.
Andreas
#5
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interesting...mine makes almost a whistle noise, albiet high pitched. Only at start up, and seems only when it is cold/wet outside, but not everytime.
It goes away after a few minute's. I initially thought it was originating somewhere around the blower/airbox, but seems more toward the fan/alternator area now.
Winter time fix maybe.
It goes away after a few minute's. I initially thought it was originating somewhere around the blower/airbox, but seems more toward the fan/alternator area now.
Winter time fix maybe.
#6
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That's exactly what it was. Removed the whole sensor and the noise went away. The bearing is toast- all rusted. I tried putting some grease in it then re installing but it made no difference. Just ordered a new sensor
#7
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You are brave. I consider this one of the more essential alarms: Time critical to respond to and potential high consequence. Not like the brake pad sensors ...
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