Ok guys, so my H3 was suffering from the ac control problem. Anytime you would switch it from cold to anything else, you would get full heat. Well that was fine until today.. It's in the 40's here in Texas and I had the heater working fine until earlier this morning. Now, I don't get any heat. I get full cold no matter where the temp dial is at. Any suggestions?
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Cold in Texas
- Thread starter beadyeye
- Start date
Humvdood
Well-Known Member
- Messages
- 81
- Location
- Fort Worth
Hey, I had HVAC issues a few weeks ago and posted about it.
The air/heat is a pretty complicated circuit - if your blower is still working I wouldn't think it's your relay/resistor.
If you have those stock battery connectors - replacing them would be a good start. The whole car is pretty much a MUX system and with it being extreme hot/cold here in texas - the ohms freak out (yes resistance is affect by temperature).
Also, as with my case - check your engine coolant. If your thermostat or engine coolant temperature sensor are jacked up - it won't let coolant flow like it should - which would disable your air compressor and would not allow your heater core to get the flow of coolant it should get.
Just my two cents - if you're near fort worth pm me and maybe we can meet up and I can help troubleshoot - I went through the entire hvac circuit on mine to track down my problem and it's still fresh in my mind.
The air/heat is a pretty complicated circuit - if your blower is still working I wouldn't think it's your relay/resistor.
If you have those stock battery connectors - replacing them would be a good start. The whole car is pretty much a MUX system and with it being extreme hot/cold here in texas - the ohms freak out (yes resistance is affect by temperature).
Also, as with my case - check your engine coolant. If your thermostat or engine coolant temperature sensor are jacked up - it won't let coolant flow like it should - which would disable your air compressor and would not allow your heater core to get the flow of coolant it should get.
Just my two cents - if you're near fort worth pm me and maybe we can meet up and I can help troubleshoot - I went through the entire hvac circuit on mine to track down my problem and it's still fresh in my mind.
