Heater blows some times
10

Asked by reardrive Jan 07, 2017 at 01:08 PM about the 1992 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

my heater come on when it wonts too, I put in a new thermostat but it still blows warm air when it is blowing.

2 Answers
34,765

lrodri911 answered 7 years ago

Check to make sure coolant is circulating through the heater core, thse older model cars have a vacuum operated valve on the heater hoses that needs to open to allow coolant to flow through the heater core, find it and see if it's working

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10

reardrive answered 7 years ago

this 92 Cad Deville has no valve on the hose, it have a T tube which is new and new thermostat

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