Prostar 190 runs cold
My 1999 Prostar 190 didn't have a thermostat in it so I bought a 160 degree for it as recommend by MC. When I took it out for a ski it shut the motor down to a idle. I went back and bought the 140 and it did the same. It seems that if the engine gets up to 160 degrees it shuts the computer down. I also replaced the sending unit in the head and still no change. The motor is running to cold to be efficient. Need help.