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Old 07-31-2012, 02:42 PM
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2005 a/c squeeling

So the long story is that I just had my heater core, evaporator core and blower all replaced on our 05 Grand Cherokee this past spring.

I had the work done by my mechanic on staff, but now it makes this horrible screeching/squealing noise every so often. The noise is mostly prevalent when the car is at low speeds or sitting idling and if the fan is on. When I turn the controls off the noise will go away and when we are at high speed on the highway it goes away. The noise is awful and is making my wife want to get rid of the truck (for a 2012 GC) but we don't want it making the noise at the dealership when we go for a trade.

Also, it doesn't seem like the noise is coming from the Condenser/clutch area, but more likely inside the cabin/firewall area?

I have a video on my iphone of the noise - just not sure how to post

HELP!!!
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Old 07-31-2012, 06:36 PM
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Re: 2005 a/c squeeling

When my car was making noises like this it was a bad belt tensioner.
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Old 08-02-2012, 03:10 PM
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Re: 2005 a/c squeeling

a failing blower motor can cause some squeaking and squealing noises... i just replaced mine about 2 weeks ago for this problem.
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Old 08-02-2012, 04:57 PM
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Re: 2005 a/c squeeling

We have replaced the blower as well as now the tension pulley and new serpentine belt.

We think that the noise is coming from this part... what part is it?
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Old 08-02-2012, 07:40 PM
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Re: 2005 a/c squeeling

that is the cruise control servo... unless something wildly abnormal is happening then there is no way that is causing the noise. the vent right at the top (left side) of the first picture, or the cowl, that is right where the recirc door is, if this door or actuator is broken then it can cause some whistling.

Ultimately if you think its coming from the cruise control servo just unplug it, if the noise remains look on, if the noise goes away replace it
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Old 08-17-2012, 03:08 PM
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Re: 2005 a/c squeeling

Could this be a bad blend door?
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Old 08-18-2012, 12:08 AM
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Re: 2005 a/c squeeling

Possibly, but more likely recirc door as that is what is closest to that area.
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