Help plz

[Gary#turbo]

Hi everyone
Iv just had a  mk4 golf 1.8 turbo
And my car has started to overheat on the temp gauge on the clocks
Only started today as had car 4 few days now
Out the blue car temp gauge went shooting up to 130 parked up
And coolant bottle goes full
Left bonnet open and temp goes to 90 and heaters work perfect
But the fan doesn't come on
Can someone help me to solve this problem
And also what is the best dumpvalve 4 the car
Also had stage1 remap at r tech : )

[barrym381]

waterpump failure would be my guess 

[dom]

And mine, I wouldn't drive it until it's sorted.

[Gary#turbo]

But if it was water pump wouldn't the air out the heaters be cold.  ?

[barrym381]

But if it was water pump wouldn't the air out the heaters be cold.  ?

sometimes they still pump some water through the system just not enough 

[james2]

Hi everyone
Iv just had a  mk4 golf 1.8 turbo
And my car has started to overheat on the temp gauge on the clocks
Only started today as had car 4 few days now
Out the blue car temp gauge went shooting up to 130 parked up
And coolant bottle goes full
Left bonnet open and temp goes to 90 and heaters work perfect
But the fan doesn't come on
Can someone help me to solve this problem
And also what is the best dumpvalve 4 the car
Also had stage1 remap at r tech : )

I would change the thermostat first. If that does not work its the water pump. Fans come on when hot water gets into the rad.

[Wazzzer]

while doing the thermostat you can feel inside to see if the impellor is still there...

[Gary#turbo]

What's the  impellor lol

[Wazzzer]

The black bit in this pic



It's what circulates the water around your engine. Usually they break apart or come away from the shaft meaning they will only sometimes turn.