How do you replace the thermostat located on a 1991 VW Golf?
hi mate you have to take the alternator off and you will see the bracket that holds the alternator on i think there is 4 to 5 bolts on it take them off remove the bracket and you will see the water pump remove the pipes and 4 bolts pull the water pump off and you will see ablack cover on the bottom with 2 10ml bolts take them off and the thurmostat is there cheers tony hello, I have an M reg golf gti, I found it quite easy to get to the thermostat housing by removing the steering oil pump. 2 vertical and one horizontal bolts and the adjuster bolt, this reveals the stat housing. Good luck witht the top 10mm bolt, it snapped for me. Good site. Hugh (Oxford)
Helped a mechanic friend of mine replace the thermostat on my 1993 GTI 2.0 8v (2E engine) recently. Easiest if done from underneath.The thermostat housing is behind the bracket that holds the pas pump etc.Undo the pump bolts and swing it out of the way.Can't remember if we had to do the same with the alternator.
The thermostat is located at the bottom of the water pump. Follow the lower radiator hose to the water pump and you will see it connects to the water pump outlet (molded plastic/cast alloy depending on year). The outlet is secured by two 10mm bolts. The thermostat sits inside the outlet. Have a fresh O-ring handy in case the old one is perished (a decent thermostat kit should come with O-rings).