Mechanics

PLYMOUTH VOYAGER THERMOSTAT PROBLEM

1999 Plymouth Voyager • 189,747 miles

Replaced the heater core van doesn't overheat windows defrost but still no heat
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Sugga
November 18, 2012.



Thermostat? Did you change it?

Blend door motor could also be the issue. A shop with a scan tool can force it to move to verify

Roy

ASEMaster6371
Nov 18, 2012.
No because it never ran hot

Tiny
Sugga
Nov 18, 2012.
Thermostat can still be bad. It does not have to overheat to be bad. It can be stuck open not allowing the coolant to heat up

Roy

ASEMaster6371
Nov 18, 2012.