Heaters not working, airlock?

[atokley]

Hi,

I have a c20xe nova, the heaters were working fine on the car and one morning i noticed they stopped working (well only blow out cold air).

Is it possible i have a airlock in the heater matrix (cant think of any other explanations???) can anyone tell me how to bleed it?

Thanks

Andy

[H15 NVA]

mine did that, does the hot/cold adjust knob feel easier to turn? in passenger foot well behind centre consul there is a linkage that the knob attatchs to, mine had come undun so was stuck on cold, get under with a torch n turn knob from hot to cold repeatedly seeing whats moving/not moving.

[atokley]

mine did that, does the hot/cold adjust knob feel easier to turn? in passenger foot well behind centre consul there is a linkage that the knob attatchs to, mine had come undun so was stuck on cold, get under with a torch n turn knob from hot to cold repeatedly seeing whats moving/not moving.

unfortunately the mechanism is working fine, dont have a clue how to bleed this car tho as im used to jap crap

[H15 NVA]

think run it till hot with heater on n fan on 2, with expansion cap off??

[chimp007_uk]

my gte is exactly the same... it used to be hot, not that the weather is cold, they've stopped working....

[chimp007_uk]

anyone know the best way to get rid of air locks in the heaters?

[Adam]

Keep sqeezing the coolant hoses.
Take the expansion tank cap off, remove the temperature guage sender and let any air escape, once coolant starts to come out of the guage hole, screw the sender back in.

Like bleeding a radiator in your house..

[diablo007]

head gasket?

[Matt Pickering]

Try checking for an air lock if not it'll be the head gasket!!!

Take your car to an MOT test station and ask him to check it by putting the emmisions tester into your Header tank water and if carbon is present in your water then its your head gasket!!!

[Bouch]

anyone know the best way to get rid of air locks in the heaters?

Do it when the engine is warmish, so that the stat is open but not so hot that your creating more steam voids (bubbles) in the system.
Point the car up hill.
Put the internal heaters on flat out and on hot.(again, to reduce the chance of steam)
Link out the rad stat,so that the fan is running constantly.(as above)
Remove the header tank cap.
Fill the header tank to the brim.
Start the engine and let her tick over, but every now and then, rev the engine, as it takes the increased flow from the water pump to push out the air.
Hopefully after revving the engine, bubble should appear in the header tank.