Less heat on driver side

[kjg26]

Put of the blue I began having less heat on the driver side than the passenger side. At idle and with the blower on low I have out 125 degrees to the pass side vents and 110 to the driver. At high blower speed the driver side drops to 90s. I've checked the blend doors and the 3 actuators in the cab side of the heater box and they are all fine.

I'm trying to determine what my next step i . Do I need to go ahead and pull the dash and replace the heater core? Back flush the heater core?


It's been suggested that the core could be partially blocked. It's also been suggested that the condenser could be so caked up that there isnt enough air flow.


Please.... any help is greatly appreciated.

 

[kjg26]

Anyone?

 

[Tach_tech]

Start with backflushing the heater core. If still no good, then replace the heater core.

 

[kjg26]

For those of you following this. I back flushed the heater core with hose water. Didnt use any chemicals. Hooked everything back up and I'm sweating now. Pass sude is up to 149 and driver side is 140 with ambient temp of 50. That's on the dash. MUCH MUCH BETTER. Guess either some blockage in the core that I couldn't appreciate during the flush or maybe air pocket ?