1995 Pontiac Bonneville
V6 3800

codes = no
tech = JK
question = When I turn on the heater, it only blows out cool air. I can
hear the air pressure drop when I switch the temp. control from cold
to hot. What could my problem be?






JK:
Hello and welcome. This sounds like the heater core is plugged up. With not
enough  coolant flowing through the core, the air temp. won't get hot enough. This
is as long as the  temp door in the dash is moving and the coolant level is full.

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