Radiator Fan Won't Start
 

Hey,

It its 100F here in NJ and my car doesn't seem to like that weather. I was driving for an hour to philly today and on the way back my car began to over heat. I stopped checked the hood ... waited a while and my rad. fans wouldn't start. At the end I ended up connecting my fan directly to the battery and driving home.

With my car I have noticed that when it gets really hot my fan seems to stop working. The mechanic at Nissan told me before that it is probably a problem with the ECU. But I am thinking its a sensor ? what do you guys think ?

thanks a mil.

ur right its got to be a sensor or belive it or not check the fuse

it could be your coolant temperature sensor....it defiantly should be if ur fuse is gud....

Hey, all the fuses and relays are good. I did some research and it has to be the Coolant Temperature Sensor. Today my car was even choking from too much fuel. thanks! :D

I will fix it tomorrow.

BTW. I forgot to mention that when I was accelerating in the heat today the engine was very week and was making a rattling sound as if I was dragging a piece of metal (scraping the ground). This sound only occurred when I pressed the gas. When I fixed the fan, and the temp went down, the noise went away.

keep us posted good luck broo

kool...i knew it that it was CTS....90% of the time it is CTS...so gud luck and have fun changing it..its easy to change...

thanks. BTW should I use any sealant or lubricant when installing it ? or just directly install it ?

when u will buy a new Coolant temp sensor u will get new seals with it, just use them and u r gud to go...but remember when u change ur CTS ur engine should be cold other wise u might get burned by HOT coolant cuz wen u take old CTS out coolant gonna come outta there...so let ur engine cool down then change it....ur cooling system will work alot better with new CTS.....if u will have any problems just post it here and we will help u:D

thanks for all the help. I changed the sensor today and my car runs great now. Not only does the fan work well, but it revs very clean now. thanks!!!

glad to hear...that ur problem is solved....have fun :D