rear air knocking?

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tombstne - 02 Jul 2006 23:08 GMT

I bought a 2002 explorer xlt and the rear a/c works but there is a knocking
sound ( ~78 knocks/minute regardless of rear fan speed) coming from the rear
driver side. I started taking the rear interior panels off, I got to the
rear air conditioner and still couldn't pin-point it.

Anybody have this problem before or have any solutions?

thanks,
Tom

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JohanB - 04 Jul 2006 02:14 GMT

Knocking or ratcheting ??????

If ratcheting probably a blend door motor, try moving to hot/cold and or
floor/defrost to see if the noise changes

> I bought a 2002 explorer xlt and the rear a/c works but there is a knocking
> sound ( ~78 knocks/minute regardless of rear fan speed) coming from the rear
[quoted text clipped - 5 lines]
> thanks,
> Tom

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craftycaper - 08 Oct 2007 20:56 GMT

I just started having the same issue with my 02 Exploder... Did you find
resolution to this?

Thanks,

>I bought a 2002 explorer xlt and the rear a/c works but there is a knocking
>sound ( ~78 knocks/minute regardless of rear fan speed) coming from the rear
[quoted text clipped - 5 lines]
>thanks,
>Tom

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