its rev 3 turbo which i have owned for 3 years now and when i first got it the engine was dropped out as the turbo seals had gone and while changing the turbo i changed all gaskets and water pump etc.
i had problems a few weeks back of water slushing in the pipes which was audible in the car so i bled it and the car was fine for a week but then it returned and started to over heat at standstill but temp would drop when load was put back through the engine and started moving again.
i checked and found the rad was looking in a very sorry state at the base so i pulled it out and changed it over and put new coolant in and began to bleed again only to find that it would start boiling with the back filler cap off although the temp gauge was saying normal. i suspected the temp gauge but it has shown just over halfway when it started to overheat at standstill but either way still something isnt right. i bled again with the filler cap back on and bled from the front. i left the car for a very long time before water started cycling down the front of the car ..a good 30 mins at least under idle. but it did come through in the end. i kept my eye on the temp gauge and it never crept above halfway and no air from the rad or heater matrix. i was concerned it might be a fan problem so checked them and then bridged the plug so they run full time to see if it was that so a week later and coolant check and top up which was about a quarter litre which was much better previously than with the old rad on and i had some hope that it might now be behaving and equally non stop hot air out the cabin vents where as before it
got cold under idle before starting to overheat from an air lockbut now coming back tonight from a drive i shut the car off to hear it bubbling out the back through the rear firewall.
i opened up the back and can hear air hissing out the expansion bottle and boiling under the filler neck cap..i checked the front and water is coming through and going into the rad..very hot one side and warm on the other and the fans now run full time but yet its boiling at the back.im a bit stumped now.
..ill get a new thermostat tomorrow and change it but im now thinking its a water pump issue but i previously could hear water going through the pipes at startapologies for the long post but i thought i would try and outline everything the best i could so far
just any thoughts or suggestions would be hugely appreciated
Dan