I have a 1989 S10 Blazer with a 4.3 L V6 engine. It has an AC that is giving me some trouble.
Observed Behavior: When i slide the mode selector to any AC mode , it blows the ac fuse.
Ive replaced the following
- Replaced the AC Relay and the blower motor resistor. It worked for around 10 minutes of driving and then the fuse blew up. ( The weather was around 35 degree C, the engine temperature was around 100 degree C)
Also noticed the following behaviors
The fuse does not blow up if its on heater or on vent mode and the temperature is slid to heat.
This has been a yearly issue during summer and the only solution I've got is replacing the AC blower motor. But its coming to a point where I'm replacing it on a yearly basis.
I thought id check here before I go change my ac blower motor. Could I get some suggestions to help troubleshoot the root causes?