My '94 Ford Tempo has a small issue. if you just start the engine and drive, the engine never gets over the 1st line on the gauge unless going up a lot of hills, but I used a non contact thermometer on top hose, and that indicates the thermostat is working at about 160* kind of odd, as that's a low temp. letting the car idle, the motor will get to 190-200* and the needle goes to 1/2. at this point the fan and everything comes on just as it should. driving the car, it will remain in the middle for a while, but eventully will rest on the second line, at about 180*. I'm getting another thermostat tomorrow just to rule that out 100%. radiator was replaced and this 1 was a junkyard radiator, it's good but dosn't quite fit right, if this was a 6cyl rad, could this do that?