does a compressor or fan clutch give a warning?

SINCITY192 · Jun 21, 2010

88 xj 4.0L 6cyl auto trans!

I have a noise that kind of sounds like something is rubbing slightly ir brushing on something, but it eventually stops. It makes the noise when I first start it up even if I ran it for the day already.
The noise is coming from the compressor or fan clutch area.
So i was wondering if any of the said parts makes a noise before they fail
Or if not does any body got an idea on what i should be looking at.

joe_peters · Jun 21, 2010

Yes, no, maybe?

Grab yourself some vinyl tubing, about 3 feet of it, 1/2" ID or less. Stick one end in your ear, move the other end around the engine until you can isolate the source.

Usual warnings about moving pulleys, belts, loose clothing and skin.

Don't forget to check the harmonic balancer, when the rubber goes it will move around and rub the timing cover.

SINCITY192 · Jun 22, 2010

joe_peters said:
Yes, no, maybe?

Grab yourself some vinyl tubing, about 3 feet of it, 1/2" ID or less. Stick one end in your ear, move the other end around the engine until you can isolate the source.

Usual warnings about moving pulleys, belts, loose clothing and skin.

Don't forget to check the harmonic balancer, when the rubber goes it will move around and rub the timing cover.

what or where is the harmonic balancer?

joe_peters · Jun 22, 2010

SINCITY192 said:
what or where is the harmonic balancer?

Big circular thing attached to the front of the crankshaft with a bolt. It is made in two pieces, then bonded together with a rubber compound. It balances harmonic vibrations from the crankshaft--the bonded rubber between the pieces does that.

winterbeater · Jun 22, 2010

You could also take the belt off and run it cold (like 30 seconds cold) to see if it still makes the noise. Then spin all of the pulleys to see if you can feel any roughness.

SINCITY192 · Jun 22, 2010

winterbeater said:
You could also take the belt off and run it cold (like 30 seconds cold) to see if it still makes the noise. Then spin all of the pulleys to see if you can feel any roughness.

will it start without a belt? no right!

89xj · Jun 22, 2010

SINCITY192 said:
w

will it start without a belt? no right!

if the battery is in good working condition and charged, yes the engine will start and can be safely run for about 30-60 seconds.

SINCITY192 · Jun 22, 2010

ok so I'll get on it soon as I can. I gotta work for the next 2 days, i think i get off thursday so Ill do it then and get back to you!!

does a compressor or fan clutch give a warning?

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