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ac fan

roadhog on Sun April 12, 2009 6:35 PM User is offline

Year: 1994
Make: chevy
Model: blazer
Country of Origin: United States

How do you remove the ac blower fan from under neath the dash?

Chick on Sun April 12, 2009 6:38 PM User is offlineView users profile

Is this a S10 or full size

If an S10, the evap box is uner the hood, and if it is the below pic shows how it's hidden under the right fender (Pic shown is 95 and up) but if the evap box is under the dash, the blower should be on the passenger side, going straight up..Hope this helps..



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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

Edited: Sun April 12, 2009 at 6:45 PM by Chick

roadhog on Sun April 12, 2009 6:44 PM User is offline

This is a full size Blazer.

Chick on Sun April 12, 2009 6:48 PM User is offlineView users profile

Sorry, wrong pic..
here is the pic for under hood evap boxes..



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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

roadhog on Sun April 12, 2009 6:58 PM User is offline

When the ac is running it makes a scrubbing noise under the dash. We looked and it looks like an out line of a blower motor under the dash next to the passenger side wall. Could this be another version or is it the one you are showing that extends into the interior of the car?
There is a rubber feeling item that moves in the area next to the interior firewall that I am speaking of and when you press it the noise goes away.
I am sorry that I can not be more verbal about this.
Would you have a pic of the area I am speaking of under the dash?

Chick on Sun April 12, 2009 7:01 PM User is offlineView users profile

Sounds more like a diverter door. Ok, checked Mitchell, and it appears the blower motor and evap case are under the dash. You might want to remove the blower motor and check for papers or other foreign objects that may have been sucked into the blower path..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

Edited: Sun April 12, 2009 at 7:07 PM by Chick

roadhog on Sun April 12, 2009 7:08 PM User is offline

This is my nephew's car. I will see what I can do to get a pic from him.

Chick on Sun April 12, 2009 7:10 PM User is offlineView users profile

Ok, but since we find it's under the dash on the K1500 Blazer, I think you should just remove the blower motor and check it out.. It goes straight in according to the diagram I saw.. Hope this helps..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

roadhog on Sun April 12, 2009 7:16 PM User is offline

By the way, even when you turn the switch off there is a loud click about ever second for maybe 8 to 10 seconds then stops. This is coming from the same area I mentioned above. You can feel the vibrations at the rubber thing-a-jig. It has to be coming from this area.

Chick on Sun April 12, 2009 7:32 PM User is offlineView users profile

That sounds like the diverter door, or something stuck in it...

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

roadhog on Tue May 26, 2009 11:32 AM User is offline

Chick, I apoligize for taking so long to respond but just had a chance to look at the vehicle (The grandson, I know I said nephew above but was lost in space, is 16 and never still, ha).
I looked at the vehicle and the fan is definitely under the dash near the side wall on the passenger side. It has a cover over it that seems to be k rubberized. You can pull the cover up from the bottom and can see the fan but have no clue as how to get the cover off and out of the way. Do you?
Under the hood it looks like the s10 you showed a pic of above. But it is a full size Blazer.

roadhog on Sun May 31, 2009 3:12 PM User is offline

Here are a couple of pics that show under the hood and inside under the dash:





Our trouble is getting the fan off to see if there is an obstruction in that ares.

If anyone has an idea of how to remove the fan/rubberized cover let me know.

PS as you can see he has been in the mud as teenagers are prone to do, ha.

GM Tech on Sun May 31, 2009 4:04 PM User is offline

Take the cover off the blower motor- you will see the rest of the scres to take out- sometime you need to unbolt the dash to move it back slightly...

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

Cussboy on Mon June 01, 2009 6:45 AM User is offline

Quote
Originally posted by: roadhog
Here are a couple of pics that show under the hood and inside under the dash:







My 1994 Sub has the same setup, and my underdash blower fan started making some noise in lower speeds over the weekend. So it looks like I'm going to be trying to get to that fan myself real soon.

roadhog on Mon June 01, 2009 2:52 PM User is offline

Post your results, please. I will be grateful as I know my grandson will be.

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