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guillermo
New User
Jan 8, 2013, 9:59 AM
Post #1 of 2
(1657 views)
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I have a 1992 chevy G20 van 5.7 motor,2 weeks ago it had warm air,now only cold air what is the problem
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 8, 2013, 10:47 AM
Post #2 of 2
(1633 views)
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Check the coolant level first thing.........
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 they are both hot, 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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