Questions & Answers for: BMW 318 heat pump blows cold sometimes

heat from heater temp light comes on.heater not blocked,termostat ok.?? check and see if you get water/coolant circulates when you have the cap off (only check from cold start) the original water pump

...a stop light, it will start to blow cold air again. Any ideas? Can be low coolant level or water pump problem. Check the coolant level. Also alternator (serpentine belt) can be a problem too. Good ...

...heat when there is a high flow of coolant or the plastic impeller on the inside of the water pump is loose and isn't circulating the coolant around the engine properly. Hope this helps & good luck

...blows cold It began today, the heating didnt get warm at all, and the engine temperature gauge rose to the red. As soon as i was on the move, the engine cooled and the heater warmed up, as soon as ...

heat control one side blows out hot and the other cold but both sides are set to the same temperature.what is the problem? ps sometimes they both blow hot. I believe this car uses electric vent motors

the way to red it will blow hot air. Even if the ac is on. and cold even if the heat is on depending upon its position. It won't work either way unless you have it where you want it. I hope this helps

...blows cold air instead off hot can you help me please Check coolant level first. If coolant is ok. Check under hood petween engine and salon is heater hoses connected with heater valve check it is it ...

...blows cold air. Anyone out there can help me. The cold is not misty or doesn't fog my front windshield, it just blows cold air Thank you to anyone and everyone that cna help Gerardo There is a ...

...blows cold again but only for a short time. Two things to check. First I would make sure that the front of the car, where the condenser is, is clean. Make sure you have air flow threw the condenser ...

cold but i get hot air coming out vents i had water pump changed 1 year half ago its been bleed fully no air. What else can be the pipe exploaded aswell bought another thermo same problem. Don't worry