Fan control switch

[parkay]

Did a few searches, but found little useful information... My air conditioning/heater fan switch only works on the 2 highest settings. This basically boils down to the fan running at full blast or not at all. Is this a common issue? Is there somewhere I should start without tearing the whole dash apart? Thanks much!

 

[541joseph]

Did a few searches, but found little useful information... My air conditioning/heater fan switch only works on the 2 highest settings. This basically boils down to the fan running at full blast or not at all. Is this a common issue? Is there somewhere I should start without tearing the whole dash apart? Thanks much!

There are resistors for each speed. Just look in the fsm on how to change them

 

[parkay]

There are resistors for each speed. Just look in the fsm on how to change them

Sweet. Thanks much!

 

[541joseph]

Sweet. Thanks much!

And it may be a resistor pack.

 

[parkay]

Located the blower motor resistor pack, which essentially looks like 3 wire coils. 2 are completely shot so I think I've located the problem. Anybody know a part number for this resistor? Not much info in FSM

 

[parkay]

Found it! None in stock at local Napa so its on order. Pic incoming of old resistor...

 

[parkay]

 

[541joseph]

Wow! I'd say it toast. How difficult was it to get out? I need to do this myself just keep putting it off though

 

[parkay]

Not hard at all. Relay is physically located in the air duct under the dash on the passenger side. Just unplug the connector and the resistor is held in with a single screw. Can take pics if needed.

 

[541joseph]

Not hard at all. Relay is physically located in the air duct under the dash on the passenger side. Just unplug the connector and the resistor is held in with a single screw. Can take pics if needed.

Not needed thanks. I know where it is thank you!

 

[Kean]

I need to do this on my '86. I started loosing various speeds until only the highest setting would work. ....which is better than nothing I suppose.

 

[parkay]

I need to do this on my '86. I started loosing various speeds until only the highest setting would work. ....which is better than nothing I suppose.

Yeah, with the relay pulled the only fan setting is basically full blast.