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bob29
Novice
Jun 10, 2010, 4:09 PM
Post #1 of 2
(1406 views)
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96 blazer with working a/c but no heater. where do i look first?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 10, 2010, 4:13 PM
Post #2 of 2
(1404 views)
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With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch.
If you find that they are both too hot to hold, then the heat in that vehicle is controlled by a blend door that regulates heated air flow. it is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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