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Heat only on one side

Tiny
DNLWEGENER
  • MEMBER
  • 2005 KIA SPORTAGE
  • 134,000 MILES
I only have heat coming out of two vents the other two are cold. I have just replaced the thermostat and check all the gears and all the gears seem to be working fine.
Tuesday, December 26th, 2017 AT 4:15 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi DNLWEGENER,

This should be due to a fault with the venting system. The mode control motor is not functioning correctly and it could be bad or a linkage could have detached itself.
Check the air mode control motor under dash and their linkages.
Depending on which 2 vent, either right or left, that is the side you should be checking.

K H Low
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Wednesday, December 27th, 2017 AT 9:02 PM

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