If your 2003 VW Gti gets overheated and the motor cuts off the fuel so you cant go anywhere does that sound like a thermostat problem or water pump And if not that what?
I just encountered this problem with my GTI. But I haven't got it hot to a point where to fuel cuts out then car wont start. I took it to the shop and help diagnois the problem. I was told that its really common for the water pump to fail in the 1.8t mk4s. So i just went ahead and got the water pumpreplaced plus the timing belt and the thermostat. I hope that this info helps you. (78,000 miles)
That is the most typical thing to cause a warped head. A warped head is a severe diagnoses and not the first thing that would come to mind for a problem. Don't know what the issue is but if you have a problem that has lead to you think you have a warped head and you haven't had a extreme over heat of the motor I will bet you don't have warped head.
The thermostat on a 1993 Mazda 929 is located on the top of the motor just before the manifold covers. Look for the largest hose coming from the radiator at the top and trace the length of the hose back to its connection to the motor and the thermostat is at the point the hose connects to the motor.
The thermostat is located on the front of the motor, just to the right of the alternator. If you stand in front of the car looking at your motor, you will see a radiator hose that goes from the bottom of the radiator to the the block. Where it connects to the block is where the thermostat housing is. Its plastic and has two 10mm bolts holding it in place. It can be a little…