Electronic temp control, blend door problem
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Electronic temp control, blend door problem
Hi all
My ex has the electronic temp control. Ive noticed there is very little difference from full hot to turned down less than 1/2 way.
(I'll convert to fahrenheit here)
Example - lowest temp setting is 60. If I am on heat, turning it from 60 to 66, gives me almost full hot. A slight difference is felt turning it to 68 and 70, but basically 70 is full HOT. Continuing to turn it up to 88 makes zero difference.
I figured the blend door actuator might be toast, but it is in fact moving.
I pulled the heater core cover off and here is what I noticed.
At 60, the blend door is fully open (correct, pulling cold air from outside)
turning it to 66 the blend door almost fully closes. then the last little bit gets closed when going from 66-70. Anything hotter than 70 is of no use because mechanically it IS on full hot at 70.
So basically I get full cold, or full hot, nothing in the middle.
I pulled blend door actuator out, cleaned all the built up crud around the shaft, took it apart and cleaned it, no effect.
Any help would be appreciated!
My ex has the electronic temp control. Ive noticed there is very little difference from full hot to turned down less than 1/2 way.
(I'll convert to fahrenheit here)
Example - lowest temp setting is 60. If I am on heat, turning it from 60 to 66, gives me almost full hot. A slight difference is felt turning it to 68 and 70, but basically 70 is full HOT. Continuing to turn it up to 88 makes zero difference.
I figured the blend door actuator might be toast, but it is in fact moving.
I pulled the heater core cover off and here is what I noticed.
At 60, the blend door is fully open (correct, pulling cold air from outside)
turning it to 66 the blend door almost fully closes. then the last little bit gets closed when going from 66-70. Anything hotter than 70 is of no use because mechanically it IS on full hot at 70.
So basically I get full cold, or full hot, nothing in the middle.
I pulled blend door actuator out, cleaned all the built up crud around the shaft, took it apart and cleaned it, no effect.
Any help would be appreciated!
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