heater only blows cold and fan wont work in floor position

5

Asked by Aug 06, 2015 at 04:09 PM about the 1991 Mercury Grand Marquis 4 Dr Colony Park GS Wagon

Question type: Maintenance & Repair

fan blows in every position accept floor ,will only blow cold core is not plugged just
replaced thermostat

2 Answers

20,835

first check your heater controll valve..

2 out of 2 people think this is helpful.
20,835

then vacuum to controlls

1 out of 1 people think this is helpful.

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