Help me with my 95 Roadmaster HVAC!

[rob350]

Hey guys,

Need some input here.

My blower motor stays on when I turn the car off? Blower control module?


Rob

 

[TexasT]

Is it some kind of computer control climate thing? No telling what the module is telling the switch to do. Break out the meter and follow the wire(s). There could be a stuck relay/bad switch or the module could be bad. Do you have a wiring diagram? Might try to look one up or get one from one of the part houses.

 

[TURBOTWIN2]

My first thought is blower relay sticking closed.

 

[rob350]

Found the problem! A transistor on the blower control module shorted out.

 

[turbojd]

I had the same problem on a 1994 Buick Park Ave, the blower motor would run with the engine off. I replaced the blower control module and it fixed the problem. I did check the blower relay first, as that was easiest to see and fix, but that wasn't the problem, the module was the culprit!!