Does the auxiliary fan turns on when the air conditioner is on? My temperature started to rise and the fan still off. Thanks

 

It doesn't always turn on when the AC is on. On a D1 yes they came on as soon as you turned on the AC, but not on a D2. It'll take a while for it to come on, and if I'm not mistaken with the AC off the fan will engage around 205-207F to prevent engine over heating.

 

Are there any hacks to get it on around 180? I reached 221 already and the fan did not turn on. Its warmer today around 80's. I guess its part of the air conditioning system but where is the temperature sensor switch located? Can that be tapped in the cooling system instead? If driving, is the fan against the wind?

 

It is supposed to kick on when the engine reaches 205-207F even with the AC off, so I would unplug your fan and use some alligator clips to a 12v battery and see if the fan comes on. If not you'll need a new fan.

 

OH! Ok, Ill check tomorrow.

 

Right at 210 degrees F the AUX fan should start up.

If it is cold out and your Aux fan is running, you got trouble.

Only way I fixed it was the trifecta.

Replace radiator with new one from Rock Auto - a new Nissans
Replace theromstat with grey one - 180 degree from Land Rover. Never a motorrad.
Replace fan clutch with new Hayden fan clutch.

Bleed it all out.

Your are set.

 

have you check your aux. fan, most are frozen

 

Thanks! Youre deep man, Had to goog trifecta, I thought its a part. But got your point. Anyway 210˚ on both my discos never went on. Once in a while they get up to 221 and still not turning. Its warmer today but not hot. I have one from your trifecta and one was the oil cooler but no aux fan turning. It might be much higher than that. But my temp for both never went over that 221. What if I isolate the aux and get a 195˚ switch? Anything that I need to be concerned?

 

If you want it to run cooler get a LR Genuine 180F Grey Thermostat, and test the Efan and replace it if it's INOP/DEAD. Also since it's an 03/04 you might consider dumping the one piece Fan Blade/Clutch for an earlier 99-02 two piece unit. Then you can slap in a new Fan Clutch for 55.00 vs the entire 03/04 Assembly for 260.00.

 

Fan spins freely when off.

#5 fuse looks good

Used leads with alligator clips to battery and runs fan.

Could it be a bad relay plug in the fuse box? Or bad temp sensor?

I never hear the aux fan run.

A while back I was parked idling while waiting for someone. AC running and then temp started to climb. Turned heat up and started driving temp went back down.
AC compressor was just replaced. Could it be the AC condenser or something else causing temp to spike beyond D2’s ability to efficiently cool the engine?

I have the lower owed thermostat. Temp hasn’t gone beyond without AC running, but after driving around the Aux doesn’t come on when driving or after parking.