imported_newbreed

I just had my thermostat replaced, because the car was overheating. When I hade the overheating problem and even now after the repair, the car will not give off heat unless it moving. I can let me car warm up for 10 minutes or so, the temperature gauge is just below the half way point. You would think if I turn on the heat at this point I would get warm air. Instead it’s cold air. If I take it for a quick boot, only then will the heat come on. If I leave the heat on while driving and come to a stop light, as soon as I stop. I can feel the temperature of the air going down.

Anyone ever have this problem? Any idea?

imported_Cablerat

Not sure how prominent the reduction of heat is but this is normal in the winter, with temps such as today's -20. The car basically will stop producing heat very quickly unless you car is reving and the waterpump is circulating the coolant.

Try revving your car in park/neutral to like 2-3K (normal driving rpm) when you come to a stop light and see.. It'll get warm again.

Also, the temperature guage at normal op temp after first start isn't always as warm as it seems. After driving for a while, the heat will be much hotter yet the operating temp is the same, once the engine is properly heated and full coolant flow has occurred..

Oldspower

I always have heat whether or not its driving. Maybe cooling system needs burped.

turbo___zc1

i just swaped a new rad and thermostat and having the same problem must be air in the system?

chris_si98

so bleed the system..

Personally I would just bring it back to the shop.