No blower A/c or heat
Posted: Tue Feb 11, 2020 3:25 am
Did a lot of reading and I think I know what is wrong, but I just want to check before spending money.
87 M6. No blower in heat or A/C. Fuse #20 blows as soon as I turn the key on. Heat blower motor is fine I removed it, oiled it and put power to it and it runs super smooth. I checked and swapped the blower select (purple relay) behind dash left of glovebox. With the key on I can feel the relay click when I press the A/C button. Fan for rear air works properly.
I am thinking the fan speed switch in the dash has died and is shorting out causing the fuse to blow. Everything I read said if the fan doesnt work on heat or A/C then it is the relay or ground. Any and all help much appreciated. Thank you.
ernest
87 M6. No blower in heat or A/C. Fuse #20 blows as soon as I turn the key on. Heat blower motor is fine I removed it, oiled it and put power to it and it runs super smooth. I checked and swapped the blower select (purple relay) behind dash left of glovebox. With the key on I can feel the relay click when I press the A/C button. Fan for rear air works properly.
I am thinking the fan speed switch in the dash has died and is shorting out causing the fuse to blow. Everything I read said if the fan doesnt work on heat or A/C then it is the relay or ground. Any and all help much appreciated. Thank you.
ernest