So I finally fixed the damn thing! Wish I could give you a clear answer to what it was but I'm not too positive. I boiled the thermostat in a pot, measuring it at different stages of heat and it began to open at 180 degrees F and would start to close when it got much below that, so it seemed to work...

Thanks for the useful pics & insight. I picked up an infrared thermometer & will do some more work on it soon. I feel like there's a good possibility the bypass pipe may be plugged & will definitely check while the thermostat is out, as well as giving it a good flush. Also going to drop ...

I agree the facts do not stack up. The bottom hose remains cold, there's no flow of coolant, and yet the car seems to be running below the factory operating temp. In theory if the therm doesn't open up at all the car should start overheating, but in fact its the opposite, the engine doesn't seem to ...

I have already confirmed the therm isn't opening. Before I put the new one in it was shut & after it was fitted I ran the engine with the cap off waiting for the water to start surging & flowing as the therm begins to open up, but it just doesn't happen. The water just sits in the top reserv...

Recently bought a 1986 GTS hatch which warms up very slow & when it does finally warm up it doesn't seem to reach the proper operating temp. I know the original gauges are not all that accurate but I can't get the needle to even cross the T on the TEMP indication. Furthermore the heater doesn't ...