Thermostat Gates or OEM Volkswagen

I only use Gates now after some cheap ones failed but didn't leak. Gates are very good. I have not had to replace one.

I had a bad thermostat and it's only indication was the temp rising when going up hills under sustained load.

I had this year ago, thermostat was stuck closed, so coolant couldnt go to big circle and into cooler, it went up after 10 minutes of highway driving up to 115° (obd temps) on dash it wasnt that much

I used the genuine part as there is no desire to redo it again too soon.

It has been two weeks since the repair without issues, so I am going to call this one solved. If I was paying for this out of pocket in the future, I would only replace the thermostat and not the pump as that is what was closing and causing the issue.

I installed a Gates 33009S 195 degree after my Hughes install and haven’t had issues.

Sounds like your water pump is working, but maybe your thermostat is stuck closed? Have you tested the thermostat?

Parts 03F-010-501-B Sensor 04E-121-113-G

I installed a Gates one a couple months back and it worked well for a little while; engine got up to operating temp fairly quickly and stayed there, but now it’s running really cold no matter how long or how hard I drive it. Think it’s stuck open.

Original was stuck open, replaced with new VW which now appears to be stuck closed. ????. Fortunately I have recently acquired a new OE thermostat on clearance for jollies.