4 replies to this topic

[ChrisL]

Driving to work this morning and my heater seams to have stopped blowing warm air!!!
If i turn the fan off for a bit and switch it on again I get heat for about 30 seconds then it goes cold again, I have a full radiator. Could this be the water pump or just an airlock in the system?

ChrisL

[davexdavexdave]

this happened too ine top up the coolant and run it without the rad cap on for a while. worked with mine.

[fikus01]

id be thinking airlock!! or possibly the heater valve has some gunk in it! you could try removing the top heater hose from the engine and seeing if theres anything stuck in it!!

mite pay to move the heater lever over manually jsut to make sure it isnt sticking!!

[taffy1967]

Could be a faulty thermostat too?

[Jordie]

could be. if the thermostat is stuck open, the engine will struggle to get to temp therefore heater remains cold.

Once happened on my mondeo diesel. Ford told me it was impossible, but I had covered everything else why my heater was blowing cold. I bought the thermostat,changed it and all was well. I went back to ford and showed the mechanic and he didnt know what to say. Normally they stick closed, rather then open but it does happen.

Jordie