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Discussion Starter #21
Kudos on fixing the vacuum leak.

The speed control issue is usually what's called the blower motor resistor. In some cases, they actually contain resistors; in other cases, it contains a more sophisticated electronic circuit for controlling the fan motor speed. Either way, as long as you get a "blower motor resistor", you should be fine.

Looking on Autozone's website, most of them are around 40 bucks, but there are two outliers: one at 12 bucks and another at 94.

The resistor is located near the fan, up above the passenger's feet, against the firewall.

HTH.

Doug

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Thanks I'll check those out. Fan speeds 1,2,3 are dead, fan only comes on in 4 and 5
 

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Thanks I'll check those out. Fan speeds 1,2,3 are dead, fan only comes on in 4 and 5
I think it's almost always the resistor. I can't recall anyone with a bad speed switch.

Seems like fan speed control is a problem that goes way back. I've done at least one resistor on one of my Impalas. And my dad's 64 Chrysler had similar issues with its A/C fan, too :)

Doug

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^+1. Again, on my old Fords, underhood vacuum breaks/leaks were common. Think age and engine heat/cold. Also, with a faulty/burnt blower motor resistor, blower fan only worked on high speed(s). Mode (vent) selection was controlled by vacuum, temperature was controlled electrically via the temp blend door actuator motor.
 
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