Question about Cars & Trucks
Stuck thermostat or blocked up radiator or heater core.
Posted on Aug 11, 2017
Could be low coolant.
Posted on Aug 09, 2017
Testimonial: "I pulled over to check and it was full. Started the engine just to top up a little and it started bubbling. The bubbles slowed down after a while and when I was heading back was when the temperature was going up and down. But this time wasn't going dangerously high, so was only going over half then back under again, but I didn't want to push it......"
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Posted on Jan 02, 2017
SOURCE: engine temperature reading high
Faulty temperature sensor I think, thats what feeds the gauge. If the vehicle is genuinely running hot there would be a lot of pressure in your radiator causing overflows/steam/coolant smell.
Those sensos wear out and commonly go to short which shows a higher & higher reading until they fully short out
...hope that helps.
Posted on Jan 09, 2009
Check the cooling fan switch. It appears your auxiliary electric cooling fan isn't going on when at idle. and engine temp increases. While you are driving, air is being rammed thru your radiator as you cruise along, so it isn't overheating, at idle, that isn't happening, and the fan should go on as the temp goes up. When the ac is switched on, the fan is being signaled to operate due to the heavy ac load on the cooling system.
Posted on Apr 27, 2009
pull off the hose at the top of the motor, if you can see the thermostat try pushing on the center with a screwdriver, it is most likely stuck open. You may be able to free it by pushing the center back and forth till there is no longer any resitance, but it needs to be replaced. As for the temp sensor, if it is bad the guage will flicker, representing a bad connection. If the gauge just rises and falls by pattern the sensor and wiring is probably fine.
Posted on Mar 28, 2010
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