9000 interior fan wont shut off

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Sean N - 30 Mar 2005 03:56 GMT

Hi, the 9000 AC/Heater wont shut off in my wife's car. The only way
seems to be by pulling the fuse. Is this a sign the auto climate control
unit needs to be replaced?

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Walt Kienzle - 30 Mar 2005 06:23 GMT

If the fan is always running at high speed, it isn't the ACC unit. This is
the failure mode of the fan speed controller - a separate part that is near
the air intake behind the false bulkhead (under the hood, right side). The
fan speed controller costs about US$150 vs. about US$700 for the ACC unit.

Walt Kienzle
1991 9000T

> Hi, the 9000 AC/Heater wont shut off in my wife's car. The only way seems
> to be by pulling the fuse. Is this a sign the auto climate control unit
> needs to be replaced?

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yaofeng - 30 Mar 2005 11:52 GMT

You're right on the diagnosis. But I think the fan speed controller
can be had new for about half of the price you quoted. As for the ACC,
it is expensive. But I never had one died on me. I'd as soon get one
from Ebay if it does. The price is unbelievable.

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Sean N - 30 Mar 2005 15:50 GMT

Thanks for the info. I am checking some places around the net and should
hopefully find a cheap one soon. Was this unit basically installed in
most of the 9000s with the ACC? Or do I have to look for just specific
years/models when calling junkyards?

> If the fan is always running at high speed, it isn't the ACC unit. This is
> the failure mode of the fan speed controller - a separate part that is near
[quoted text clipped - 7 lines]
>>to be by pulling the fuse. Is this a sign the auto climate control unit
>>needs to be replaced?

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Walt Kienzle - 31 Mar 2005 04:26 GMT

After seeing a previous post saying that the fan speed controller should be
about half the US$150 cost I estimated, I decided to check
www.eeuroparts.com to see what is offered. Apparently there are two types
of controllers. 86 - 91 model years use part # 9629106 and sells for
US$128.80. 92 - 98 model years use part # 4632477 that sells for US$104.00.
I thought both units were electrically interchangeable, but the newer model
has a larger heat sink that may not physically fit in the older models.

Walt

> Thanks for the info. I am checking some places around the net and should
> hopefully find a cheap one soon. Was this unit basically installed in most
[quoted text clipped - 13 lines]
>>>to be by pulling the fuse. Is this a sign the auto climate control unit
>>>needs to be replaced?

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Sean N - 31 Mar 2005 05:57 GMT

Thanks! That helps out a lot and saves me the problem of buying the
wrong one. There is an auto recycler here locally that has some 9000s,
hopefully they are 91+ and still have the part.

> After seeing a previous post saying that the fan speed controller should be
> about half the US$150 cost I estimated, I decided to check
[quoted text clipped - 23 lines]
>>>>to be by pulling the fuse. Is this a sign the auto climate control unit
>>>>needs to be replaced?

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