heater fan squeaks badly when turning steering wheel left

wigsy7 · Post by **wigsy7** » 09 Apr 2008, 14:35

heater fan squeaks badly when turning steering wheel left.Definitely is heater fan as no squeak if fan turned off.Any ideas anyone?

Post by **Ozark Lee** » 09 Apr 2008, 17:46

You have a new blower in your future. Better to get it before it fries your blower resistor or your power stage. When you turn the car it loads the blower motor bearings more than when you are going straight - sorta like a gyroscope.

Mine is beginning to do the same thing and I think a new blower motor is on my next parts order. The blower resistor/power stages cost dang near as much as the motor so I would rather get mine taken care of sooner rather than later.

...Lee

mercharch · Post by **mercharch** » 16 Apr 2008, 22:02

I started noticing the same problem with my cabin fan this winter, especially when it was really cold; except eventually it was a constant squeal. You could tell the motor was binding up (bad bearing).

A replacement motor is definitely on my list. With the weather warming up, the squeal has subsided, however the fan now only runs on the highest speed setting (4). Does this mean I've fried my resistor, too? I try to avoid running the blower altogether, but on occasional chilly morning commutes, I've caved a few times. . .

::Aaron::

Post by **Ozark Lee** » 17 Apr 2008, 07:38

however the fan now only runs on the highest speed setting (4). Does this mean I've fried my resistor, too

?

Unfortunately yes. Speeds 1 - 3 go through the resistor while speed 4 bypasses it through the max blower relay.

...Lee

Hot Pepper Thai · Post by **Hot Pepper Thai** » 17 Apr 2008, 21:59

Hello Mr. Lee I just need to know if you know the max blower resistor might be located? I've had the same problem on my 93 850 and replace the primary resistor but the 4th speed is not working. I check the main fuse box slot NO 4 and its find. Would you have any idea its location? Thanks

Post by **billofdurham** » 18 Apr 2008, 11:14

The max blower relay is located behind the glove compartment.

Bill.

Post by **Ozark Lee** » 18 Apr 2008, 14:21

Like Bill said, it is behind the glove box, in front of the main air duct, on a small metal shelf. There are 2 relays - the air conditioner relay and the max fan relay.

The max blower fuse is actually fuse number 5. Check that fuse before you tear everything apart.

...Lee

Post by **tailor** » 18 Apr 2008, 17:16

These might set you straight:
The first is the general location which is behind the glove box, it is a picture of the electronic climate control, you have the manual climate control.

The second picture identifies where they are exactly.