My fan comes on and off for only a few seconds and doesn't come on after turning car off causing boil over???? It at one time came on but wouldn't turn off...must be a relay or sensor or???
Re: My fan comes on and off for only a few seconds and...
Could be a thermostat problem. check the sensor and check your thermostat. remember to squirt some wd40 or other bolt loosener because the bolt for the thermostat will be locked after so many years
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The most common cause of this problem is that the drivers seat heater grid is open or burned out. That is based on 25 years as a Ford dealer technician.
If your losing coolant water pump may be leaking, not enough coolant will make it overheat. If not that, thermostat may be bad stuck open or shut. Hope this helps
I just today actually fixed a similar problem in my honda my problem turned out to be the Timing belt was loose and not gripping to turn the water pump causing all sorts of problems with the cars temp. and water temp. including the fan not coming on, it sounds dumb but it worked for me just push on the belt and if it moves its loose. quick turn of a wrench and fixed.. Good Luck
the fan not coming on unless you turn the a/c on is a clue.this tells you the fan is working but the coolant sensor for the fan operation may not have been the one you changed(as there is one for the dash gage/light and one for the computer to turn on the fan).also the fan relay may be the problem not turning the fan on without the a/c on.
I have seen several of the v6 engines have bad waterpumps.The blades on the turbine are made from plastic and they wear off limiting water circulation.
The water is boiling because your car is overheating. Does your tempature gauge read hot or warm? Make sure your coolant level is full. If it is and your vehicle still overheats check to make sure your cooling fan is coming on (fan by radiator) you can do this by just letting your car run and waiting to hear it come on. It should come on before your tempature gauge reads hot. DO NOT let your car run until the temp gauge reads hot. These cars have aluminum cylinder heads and can warp causing serious problems. The cooling fan should come on for a few minutes then shut off and continue to do this. If it stays on, first make sure your A/C is switched off, second if it does not turn off and your temp continues to rise then you have other problems. You may have a bad thermostat, sticking closed. The water pump could be bad or a blocked radiator. If your coolant level is good, your fans are coming on like they should then you might try have your coolant system flushed. Those are some things you can try that are simple and not expensive. If they don't work then you'll have to start looking at other items in the coolant system. Hope that helps, gl.
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