Heater Works On The The Move

[councilmoff]

i have 2ltr d4d the car heater only works when car is moving but 5 seconds after i stop at traffic lights air blows cold .Engine temp is fine exactly where it should be .The moment the car starts rolling the heat comes back until i stop at the next set of lights

[nick j]

i have 2ltr d4d the car heater only works when car is moving but 5 seconds after i stop at traffic lights air blows cold .Engine temp is fine exactly where it should be .The moment the car starts rolling the heat comes back until i stop at the next set of lights

Try checking your coolant level...

[Thermal]

...and if the level is correct, there may be air in the cooling system.

Also the thermostat may be on its way out.

[councilmoff]

thanks added just over half a litre of coolant sqidged the pipe now it works fine its hard to tell between max an min on expansion its hard to tell because its black instead of clear

[Thermal]

Is that... "black" on the inside of the expansion tank? :!Removed!:

[acetip]

i have 2ltr d4d the car heater only works when car is moving but 5 seconds after i stop at traffic lights air blows cold .Engine temp is fine exactly where it should be .The moment the car starts rolling the heat comes back until i stop at the next set of lights

is your heater fan motor running.if not check fuse.