AC and Heater won't turn on

[93 Ty]

Hi guys,did a search already but didn't clearly find a solution. My problem is that when I try to turn the AC, fan or heat on there is nothing. No blower or noise. What and where do I need to look. I checked the fuse under the dash and it's good. Is there a blower fuse, like the gray color ones. Thanks, Steve

 

[Timbo]

Re: AC and Heater won't turn on

Check the ground on your blower motor.

 

[turbodog]

Re: AC and Heater won't turn on

Check the ground on your blower motor.

Yes, and if that's OK check the purple wire to the blower motor. If that's OK check the dashboard switch and the connector.
If you have 12v at the motor and a good ground, then the motor is shot.

 

[93 Ty]

Re: AC and Heater won't turn on

Guys, I assume that the blower motor is on the engine bay (passenger side). If not describe, please. Thanks, steve

 

[sytyguy]

Re: AC and Heater won't turn on

Adam had a similar problem this weekend in Daytona. Compressor wouldn't cut-on and blower motor wouldn't work regardless of setting. I put DM on it and it was commanding A/C, but nothing was happening. After checking everything else, he swapped the IC relay for the A/C relay and it started back working.

Moral = Don't forget about the relay.

Hood

 

[Timbo]

Re: AC and Heater won't turn on

Yes. Should be mounted to the box on the passenger side of the firewall in the enginebay.

 

[berzerker]

Re: AC and Heater won't turn on

check to see if you have voltage going to blower motor resistor . resistor mounted under hood in blower motor housing ,lt has an L shaped flat plug with 4 wires going to it . if you have voltage going to it replace it if that dosent cure it id say your bower motor is shot

 

[93 Ty]

Re: AC and Heater won't turn on

Thanks guys, I'll check all that is mentioned and go from there. Steve
Oh, SYTYGUY or others where is the A/C relay look like and located.