1992 chevy lumina 3.1 liter, what causes cold air to blow when heater is on

Asked by Nov 13, 2013 at 03:21 PM about the 1992 Chevrolet Lumina 4 Dr Euro Sedan

Question type: Maintenance & Repair

heater blows cold air in park and idling inany temp. setting., but when driving car blows hot air. What could be the likely causes?

2 Answers

35

I had a similar problem with a 1992 Lumina Euro 3.1. The problem was the thermostat.

20

Sounds like it is the thermostat ...

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