1.9Tdi Coolant Issues

[Russats]

Today I checked the coolant which was a little low.

Topped it up cold as it had been stood over night.

 

I drove 50 yards and the temp warning light came on as if the car was too hot.

I stopped and checked the coolant was still at the level is topped it up to which it was.

 

I thought maybe once the stat opened it would sort it's sf out.

 

Well it didn't. After being out for around an hour a came home opened the expansion cap very gingerly, much to my surprise the coolant in there was stone cold.

 

Any ideas??? Blockage? Water Pump??

[chromedome]

There is a coolant level sensor at the bottom of the expansion tank. Sometimes this makes a bad connection. Give the sensor connector a wiggle.

[Russats]

I'll try that thanks

 

 

Why would the coolant still be cold though, not being pumped around??

[chrispb123456]

Run the engine with the cap removed and look for coolant trickling back into the bottle through the return pipe, there is a restrictor in this pipe that can get blocked.

Does the heaters get hot in the car?

Edited May 26, 2014 by chrispb123456

[Russats]

Yes the heater works very well.

There is no trickle from the return pipe which if I'm correct it top left of the bottle as you are facing it?

 

Maybe I will have to check for blockages there then

 

Thanks for responding