What's causing this noise? (Video)
#1
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Year: 1987
Model: Cherokee
Engine: 4.0
What's causing this noise? (Video)
There has been a noise coming from the front passenger side of my 87 Cherokee. I have replaced the water pump and the fan clutch. The noise is still there. I'm leaning towards the a/c compressor. Any thoughts?
Also, what's causing the noise that starts out high rpm and then drops at the very beginning of the video. Is that a vacuum leak or is it normal?
Here's the video link:
http://www.youtube.com/embed/dTE47fB47_I
Also, what's causing the noise that starts out high rpm and then drops at the very beginning of the video. Is that a vacuum leak or is it normal?
Here's the video link:
http://www.youtube.com/embed/dTE47fB47_I
Last edited by leichte; 05-31-2012 at 10:49 AM.
#2
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Year: 1998
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Engine: 4.0
Everyone's computer speakers will sound a bit different, but...
Sounds a lot like a power steering pump that is running completely dry.
Could also be a bad bearing, or possibly the starter drive gear is not disengaging from the flywheel. I had that happen frequently in older GM V8s.
Sounds a lot like a power steering pump that is running completely dry.
Could also be a bad bearing, or possibly the starter drive gear is not disengaging from the flywheel. I had that happen frequently in older GM V8s.
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Year: 1987
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Engine: 4.0
I took the belt off and the noise went away. So that rules out the distributor.
Also, checked the ps pump and idler pulley and both okay.
I guess that leaves the alternator and a/c
I'm thinking maybe the a/c clutch bearing. The noise happens regardless of the a/c on or not. The noise is constant and increases/decreases with the speed of the engine.
Also, checked the ps pump and idler pulley and both okay.
I guess that leaves the alternator and a/c
I'm thinking maybe the a/c clutch bearing. The noise happens regardless of the a/c on or not. The noise is constant and increases/decreases with the speed of the engine.
Last edited by leichte; 05-31-2012 at 02:56 PM.
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Year: 2000.5
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Engine: 4.0
I took the belt off and the noise went away. So that rules out the distributor.
Also, checked the ps pump and idler pulley and both okay.
I guess that leaves the alternator and a/c
I'm thinking maybe the a/c clutch bearing. The noise happens regardless of the a/c on or not. The noise is constant and increases/decreases with the speed of the engine.
Also, checked the ps pump and idler pulley and both okay.
I guess that leaves the alternator and a/c
I'm thinking maybe the a/c clutch bearing. The noise happens regardless of the a/c on or not. The noise is constant and increases/decreases with the speed of the engine.
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
X2 on the alternator. The alternator bearings are really knd of small compared to the A/C compressor bearings, so the chances of the alternator being the cause is greater. If the belt tension is too tight it will wipe out the bearings even faster.
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