Question about 1995 Nissan Altima

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No fan on and engine hot 95 Nissan Altima

I have no fans on and the engine is hot according to the gauge. If I turn on the A/C the two fans come on just like they are supposed to. The engine came from a 94 Nissan Altima and I used all of the old sensors. I also have my tach not working and several codes for trans.shifting. I looked at the fan relays and switched them around to no avail. I wonder if the computer is screwed up. The car came from a young man who had been driving when it started overheating all of a sudden. We bought the car and took an engine from my sons other car that he wrecked, i do have the computer out of that to try.

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  • sbrown554 Dec 24, 2008

    I did not know that and it seems too high but i will take your word for it. the gauge is all the way over and I can bring it back to normal with A/C fans.

  • Marvin
    Marvin May 11, 2010

    do u know that the fans don't come on until about 230-235 deg's F?? that is better than 3/4 of the way to the hot mark.

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For the fans check the ect, engine coolant temperature sensor. located on the thermostat housin, this tells your computer when the temperature is at 228 degrees f which turns on your fan. if the gauge is reading hot it could be either the temperature sensor on the radiator or you have an after market radiator cap(checkers, autozone, pep boys) whatever but the dealer cap will make the temp. read right. the tach is gonna be your crank sensor or cam sensor and your shift codes should be your tranny sensor, not the shift nuetral safety switch.

Posted on Dec 25, 2008

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