Golf mk2 Gti

[sports racer]

Run the car for a couple of minutes until the gauge shows it's warming up.

Put your hand on the radiator, is it warm? If it is then the water is flowing through your cooling system and the gauge is faulty or the thermostat isn't opening all the way. If it's cold then you have either a blockage or dud pump or faulty thermostat.

Cheers

Paul

[Schalke04]

Run the car for a couple of minutes until the gauge shows it's warming up.

Put your hand on the radiator, is it warm? If it is then the water is flowing through your cooling system and the gauge is faulty or the thermostat isn't opening all the way. If it's cold then you have either a blockage or dud pump or faulty thermostat.

Cheers

Paul

I ran a hose through the rad to make sure it wasn't blocked. I took the thermostat out put it in boiling water to make sure it was opening, opened fine. While that was off I ran the car and looked from an angle at the water pump which was spinning perfectly, while the car was off I also attempted to spin the impeller with no movement what so ever. The fan for the radiator does come on, but temp on dash doesn't get over half way. I'm really hoping it's not head gasket. I've squeezed all hoses and ran a hose through all hoses to try get rid of any blockages

[sports racer]

temp on dash doesn't get over half way

So how do you know it's overheating?

[Jarred]

So how do you know it's overheating?

I'm with Paul on this one. Why do you think it's overheating?

[Schalke04]

I'm with Paul on this one. Why do you think it's overheating?

It's overheating because I can hear it boiling the water & it's coming out of he expansion tank cap. I've replaced the cap and it still does it.