Overheating

[sarisastar]

Hi there, Lat night i was driving my car and noticed my heat gauge was on the red so i parked up at home and tried it again this mornin and after 2 mins it was at the red again. I turned my heater on and they are freezing cold and will not warm up. Does anyone know what could be wrong

[VTS123]

Check your coolant level.

If you have suddenly lost all your coolant it could be your head gasket.

[readie]

broken theromo
blocked water pipe
air lock in the heater matrix

i have the same problem! its doing my nut in!

[grumpypants]

First check your coolant level. If the level is o.k try bleeding the coolant system.
To bleed the coolant system, loosen the three bleed screws situated at the rear left of the engine, as your looking to the rear of the vehicle, it is the one that looks like a tyre inflation cap. Loosen the allen key shaped nut on the thermostat housing and the bleed plug on top of the radiator (right hand side). Get a 2 litre soft drinks bottle and cut off the bottom of the bottle, place this over the expansion tank once the cap has been removed. Just make sure you have a relatively tight water seal around the neck of the soft drinks bottle and expansion tank and fill the bottle with water, make sure that you have a constant good head of water above the level of all the bleed points. Shut off the bleed valves once water is bleeding out of the bleed holes starting with the farthest (radiator) then the thermostat and finally the heater hose.
But before you carry this operation out, check to see why the coolant is low. Check for obvious damage or corrosuon to the radiator and check all the hoses. Hopefully it won't be your head gasket!!!!!

[Stevo123]

Above advise is excellent but this is exactly what mine did when it popped the HG. They tend to go around 60-80k miles I have noticed

[qpr4eva4]

this happened to me and it was thermostat really easy to do and well worth checking before u do head gasket. way to see if its not working is boil a kettle and put the thermostat in the hot water and see if this spring moves if it does theres nothing wrong with it