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1991 Pontiac Sunbird heating

Tiny
2PINLYNN
  • MEMBER
  • 1991 PONTIAC SUNBIRD
  • 2.0L
  • 4 CYL
  • FWD
  • AUTOMATIC
My car is running at normal temperature, no over heating, no stalling, the fan on the heater works well but its blowing nothing but cold air, I do have a/c on the car but never used it. There is no drips anywhere (inside or out) nor do I smell any antifreeze inside the car. But I'm freezing in my car, please help with any suggestions
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Wednesday, December 24th, 2014 AT 7:32 PM

5 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check coolant level first if low then have pressure checked for an internal leak. Check to see if cable is operating heat door in heater it may be broken.
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Thursday, December 25th, 2014 AT 5:34 AM
Tiny
2PINLYNN
  • MEMBER
  • 3 POSTS
Where is the cable located?
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Thursday, December 25th, 2014 AT 12:38 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Under the dash it goes form hvac control to heater door
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Thursday, December 25th, 2014 AT 4:57 PM
Tiny
2PINLYNN
  • MEMBER
  • 3 POSTS
I am looking for a diagram of the hoses leading from the heater core and housing for the thermostat, where would I find that? I have an air lock in the line and I need to bleed it plus I want to change the thermostat at the same time
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Sunday, December 28th, 2014 AT 5:45 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
We dont' h ave a pic of thermostat try an auto parts for location. We also have no heater hose diagram but heater hoses connect at bottom of firewall in center.
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Monday, December 29th, 2014 AT 6:51 AM

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