When I have blower control on HI both blowers run full speed.
When I select a lower speed setting, the right motor adjusts accordingly but the left motor stays on high speed.
I have R&R the left blower motor, separated the housing from the motor, cleaned the relay with contact cleaner and cleaned the internal components but the issue still exists.
I have noted that the relay for the left blower tends to get hotter than the one for the right motor but cant think of any reason for this. I did note a hairline crack running from one of the left relays ports to another port and, with that in mind, I swapped the entire fuse panel with another vehicles panel and the high speed only mode still exists with the left fan motor.
- Would swapping the fan motor with a donors fan motor make a difference?
- Is this a HEVAC control issue?
- Thoughts or suggestions as to troubleshooting this?