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Q: The motor will not warm up on 2000 Ford Ranger

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Motor will not warm up but it is still pushing a gallon of water in to the overflow bottle.We have changed the radiator cap and put fail safe thermastat in it and the took care of the problem for 2 months and now it is doing the same thing again any help would be great
(1) Answer
Sounds like the thermostat is stuck open, which is what these brand of thermostats will do if the engine temperature reaches a certain specification. I would get a thermostat from Ford and see if that fixes your problem.