1994 Plymouth Voyager Heater will not get hot

1994 PLYMOUTH VOYAGER
65,000 MILES • 6 CYL • 2WD • AUTOMATIC
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1994 Plymouth Voyager mileage: 65,000. Heater will not get hot. Temperature gauge is normal. Air is just barely warm. Have replaced thermostat, vacuum control switch in dash and heater core. Have bypassed the valve at the firewall. Water hose to heater is hot to the touch. Return water feels cooler to the touch.
Oct 29, 2010 at 12:05 AM
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Sounds like you are having trouble with the doors in the heater duct not opening properly. You might want to check the vacuum supply to the heater control switch in the dash.
Oct 29, 2010 at 12:06 AM