Mechanics

INTERMITTENT HEAT

1996 Plymouth Voyager

Heater problem
1996 Plymouth Voyager 6 cyl Front Wheel Drive Automatic 155000 miles

I am getting intermittent heat from my van.

When I am idling, the heat is cool to slightly warm but when I start driving, the heat works fine. When I slow down or come to a stop, the heat goes back to slightly warm again. The coolant level is fine and the car is not overheating. Somebody suggested the water pump. What do you think?
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Dave Hekele
December 20, 2008.



Most often, insufficient heat is the result of a thermostat sticking open. After that, an obstruction in the heater core.

Tiny
Jalopypapa
Dec 20, 2008.