Coolant / Thermostat Problems
I'd been getting code p0128 and my car was running too cold like the thermostat was stuck open so I replaced the thermostat with an OE exact part and now I'm having serious issues... First off, the heat doesnt work. Second, I guess there is air in the system because the coolant readings are all over the place. It read 278 last night and there's no way it was actually that hot. I tried filling it from the radiator hose off the engine and then running it with the cap off and squeezing the hoses to get air out. Had to add a lot of coolant so I figure a good amount of air came out but it still has the same problems. A friend suggested I may have bought a faulty thermostat but I wanted to see what you guys think before I replace another one. Also when I turn the car on i get p0125 for coolant temp below threshold for closed loop yet one of the gauges in my car reads open/closed loop and it is still going to closed loop.
Thanks in advance.