I know this has been discussed at length in this forum and others but I am at a loss for what else could be causing the heater/ac controls to only work 50% of the time.
What works:
- Blower works
- Speed works
- Vent selection works
- Heat / AC works 50% of the time...meaning it is a crap shoot if it will work when I start the jeep. When it works it is great.
- Heater core is hot
What I replaced:
- Coolant flushed
- Blend door on drivers side
- HVAC control unit
- disconnected battery each time
Is there something else? No matter when I start the Jeep, the defroster light blinks, the blend doors do its gyrations (all 3 of them).
I am ordering another blend door just to see if the one I got is bad but it opens and closes, just wont open for heat at times.
What works:
- Blower works
- Speed works
- Vent selection works
- Heat / AC works 50% of the time...meaning it is a crap shoot if it will work when I start the jeep. When it works it is great.
- Heater core is hot
What I replaced:
- Coolant flushed
- Blend door on drivers side
- HVAC control unit
- disconnected battery each time
Is there something else? No matter when I start the Jeep, the defroster light blinks, the blend doors do its gyrations (all 3 of them).
I am ordering another blend door just to see if the one I got is bad but it opens and closes, just wont open for heat at times.