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Originally Posted by darin00
when its starts to overheat the light will come on and the fan will kick on and the gauge will back down in between the normal and the red line.
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I then would like to know what temperature sensor did you replace ? ... the sensor at thermostat is the one that tells ecm to turn on fans.....that is the sensor that has to be bad....did you replace sensor at thermostat? when it gets to the overheat condition is the coolant boiling.. is the recover tank above full hot .....from cold to normal temp the recovery bottle should rise from cold level mark to hot level mark does the coolant rise like this? if not replace the coolant cap....
IF THE VEHICLE IS NOT MOVING THE FANS WILL COME ON EVENTUALLY , BUT NOT WHEN YOU GET A WARNING LIGHT THAT INDICATES OVERHEATING....these sensors are resistors remove both sensors measure resistance both should be the same resistance..... then place in boiling water again both should read the same resistance......can you do that.....?