Heater is not working?

2007 SUZUKI XL7
130,000 MILES • 3.6L • V6 • 4WD • AUTOMATIC
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FLORYCHEF
  • MEMBER
  • 1 POST
When driving the air blow cold in the packing heater is fine. My mechanic replace the heater core then water pump but still no heater.
Oct 27, 2018 at 10:11 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,065 POSTS
Hello,

It sounds like you have a temperature blend door actuator that is not working here is a guide to show you the steps and the location for your car is below.

https://www.2carpros.com/articles/replace-blend-door-motor

This guide can help as well.

https://www.2carpros.com/articles/car-heater-not-working

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Oct 28, 2018 at 11:29 AM
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LISA DUNCAN
  • MEMBER
  • 1 POST
Why is my 2007 Suzuki XL7 heater selector knob not delivering heat where I have selected? And today it started blowing nothing but cold air even though the heater was on. Please help me! It's 14 degrees outside.
Nov 25, 2020 at 12:33 AM (Merged)
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,236 POSTS
It sounds like a vacuum issue. Check under the dash for vacuum leaks. If you are lucky, with the engine running, you may hear a hissing sound.
Nov 25, 2020 at 12:33 AM (Merged)
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ANGIET1231
  • MEMBER
  • 1 POST
what causes the heater to blow out cold air when the car is idoling
Nov 25, 2020 at 12:33 AM (Merged)
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BLUELIGHTNIN6
  • ✓Experienced Mechanic
  • 16,542 POSTS
coolant flow is probably too high, caused by a stuck open thermostat.
Nov 25, 2020 at 12:33 AM (Merged)
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
Low coolant level ,stuck open thermostat
Nov 25, 2020 at 12:33 AM (Merged)
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