Heater blower duct cutting on and off.
#1
Heater blower duct cutting on and off.
The blower motor is running the same speed but the heat will go from the floor to behind the dash area and into the defroster back to the floor again several times per minute. I'ts only noticable when the blower is on high.
I'm thinking there is a valve operated by vaccuum that re-directs heat to the floor but it's not working properly.
Has anyone run across this? What was the fix?
I'm thinking there is a valve operated by vaccuum that re-directs heat to the floor but it's not working properly.
Has anyone run across this? What was the fix?
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cliffhanger_18
1999 - 2003 7.3L Power Stroke Diesel
18
11-03-2014 06:54 PM
phillycincykid
Cooling, Heating, Ventilation & A/C
2
07-14-2013 08:57 AM