Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
Hello! My name is Gary.Welcome to JustAnswer.
That's correct Jonny, the thermostat is at the back of the engine.
It is a difficult job to do.
Are you quite sure the coolant level is correct, bled up, no air, no leaks.
The overflow level if always high shows the pressure cap is faulty.
Ok, I would check the radiator tanks for cracks, the heater tap for leaks, and then while the engine is cold remove the pressure cap and check the level is full to the top.
If not, there is a loss, and we to find where.
On any VZ that I have have done a cooling system repair on, I replace the cap as well, they always fail.
Do you need any further help?
I hope my advice has been of assistance to you.