Low engine temperature, thermostat was replaced several times, still the engine temp is low 140F, especially on highway, on winter time engine temp is very very low.
Use a termo laser to check temp of coolant at filler cap ,with cap off run vehicle till you have hot heat coming out of your heater then check with laser. if it reads above 140 then you know 2 things . either the therm sensor is going bad or the temp gauge is bad , make sure the radiator fans come on ,if they do and you have good heat then you have bad gauge.
SOURCE: Maintenance Required Light flashes 5 times
check engine means you have to check your engine and open your trunk first and then check the engine. Once you open and check the engine and check if the engine lights still on. it should disappear in no time. Thanks for the time
SOURCE: coolant doesn't heat up!
the temp sensor just tells you the temp of the coolant and it controlls the coolant fan to turn on and off at a certain temperature........have you check for coolant leeaks???
SOURCE: car doesn't warm up
It does sound like the thermostat. The sensor does not control the thermostat in any way, it only reads the temperature of the coolant. Your symptoms are classic of a thermostat that is stuck open or partially open. Take it back and tell them what is going on and have them show you that the thermostat is fine.
SOURCE: P0172 and P0128 Error Code 2003 Trailblazer 4WD
PO172 means that an oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). I would replace the thermostat first. The computer could be injecting too much fuel because it thinks it never gets to operating temperature. That may keep the light off.
SOURCE: OBD-II Trouble code P0125-Insufficient Coolant
Whenever i get this code i like to clear it and see if it returns. Sometimes in extreme cold weather conditions it will set this code and there may not be anything wrong. What motor is in your celica?
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Thanks, I have a bad heat overall, especially during winter time and when I drive like 50 m/h. When RPM is high or whenI drive D1/D2/D3 shifts or when car is inside garage temeprature picks up to about both on engine gauge (160F) and fan. But, when I drive like 50m/h temeprature on both engine gauge and fan goes down. On engine is like 140F and on winter time gauge is down completly.
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