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The heat blows out cold from under dash

Tiny
AJLAPOINTE
  • MEMBER
  • 1987 OLDSMOBILE 98
I have a 1987 olds 98 regency changed thermostat, but it is still blowing cold, what would be making that happen,
blower motor is working fine, heater hoses are hot when running, when I set it to heater, instead of blowing out the vents on the dash, the cold air is blowing out under the dash (floor)
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Friday, November 11th, 2011 AT 9:51 PM

9 Replies

Tiny
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  • MECHANIC
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Check vent door actuators. Also, check the blend door. It is responsible for the amount of heat you get in the vehicle.
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Friday, November 11th, 2011 AT 9:52 PM
Tiny
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Thank you, that was kind of what I was thinking, so that would also make it blow cold instead of hot too?
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Friday, November 11th, 2011 AT 10:06 PM
Tiny
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Yes. If the blend door isn't opening, no heat can pass over the heater core.
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Friday, November 11th, 2011 AT 10:24 PM
Tiny
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Is it difficult to fix?
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+1
Friday, November 11th, 2011 AT 10:31 PM
Tiny
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Not hard to fix, but a pain to get to. Limited space.
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Friday, November 11th, 2011 AT 10:51 PM
Tiny
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Thank you so much for all your help, appreciate it!
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Friday, November 11th, 2011 AT 10:55 PM
Tiny
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I can not find any where that tells me exactly where to find the blend door, can you tell me exactly where it is located?
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Wednesday, November 16th, 2011 AT 8:45 PM
Tiny
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It is near the heater core in the HVAC box.
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Wednesday, November 16th, 2011 AT 9:37 PM
Tiny
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Would I get to it from inside the car in the dash or under the black plastic cover under the hood?
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Wednesday, November 16th, 2011 AT 9:56 PM

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