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No Fan, but A/C...

bigj6360

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bigj6360 Enthusiast

bigj6360

Posted
Posted

Hey Guys,

 

I have a 94 Jimmy 2WD, and the AC works, but the fan will not blow any air. I can feel the compressor pull on the engine, and can feel cold flow through ventilation when the AC is on, but like I said, the fan will not blow. I just got the thing so I don't know much information, but I'll get as much as I can. Just let me know what you need to know.

 

 

Thanks in advance,

-Me

95whtZR2 Enthusiast

95whtZR2

Posted
Posted

Check the valence(is this what its called?) right below the windshield and at the very back of the hood. It has a bunch of little slots in it goign the length of the vehicle- it is about 6-8" wide and goes the width of the truck. Under the slots is a mesh type of metal. Check that and see if it has leaves, pine needles, etc. covering the mesh. If there is any type of debris in there I would take a wire coat hanger- basically any type of wire- and try andpick everything I could out. Sometimes if the debris is small enough you can blow it out with an air hose. If there is stuff in there and you can't get it out using either of those mehtods then you will have to take the valence(?) off and that gets kinda tricky- you may want to buy a manual (I prefer haynes over chiltons) but if you don't want to buy one I got a chiltons here that IF they have the instructions I will relay them to you- just post a reply and ask for the instructions...

 

 

Congrats on the new purchase :lurk:

 

 

 

 

Tom

GMCSLE Enthusiast

GMCSLE

Posted
Posted

I assume you have checked the obvious like fuses? If so, try ALL the fan speeds on the blower motor. General Motors vehicles are known for common failure in the blower motor resistor. Sometimes the fan will work on the higher speeds only.

95whtZR2 Enthusiast

95whtZR2

Posted
Posted
I assume you have checked the obvious like fuses?  If so, try ALL the fan speeds on the blower motor.  General Motors vehicles are known for common failure in the blower motor resistor.  Sometimes the fan will work on the higher speeds only.

 

 

 

 

 

 

:lurk: DUH :jester: talk about being out of it right now...... I should just go to sleep now.

 

 

 

Tom

bigj6360 Enthusiast

bigj6360

Posted
  • Author
Posted

I have checked all the fuses and the blower speeds. I haven't checked the Mesh yet, but will do that after work.

 

I was told by a friend of mine who has a 93 Bravada that his fan motor went out and had to replace it. Any ideas on relevence to this situation?

 

 

thanks again for the help, and sorry about the late reply.

-Me

GMCSLE Enthusiast

GMCSLE

Posted
Posted

I don't have a 94 service manual here but that would be your best bet. I would check the blower motor electrical connection and see if you are getting voltage at the blower motor. From what I read it may be easy to reach this connector. It should be at the left rear of the firewall. If you're getting voltage there your motor should be spinning. If the connector is totally dead you may need to move upstream to the blower resistor, hvac controls... etc.

 

Like I said though... I don't have a 94 manual here to give you specifics. Maybe someone else does.

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