ok well i had an accident in my car about six month ago and now that i have worked on my car i replaced the radiator(mishimoto) the whole cooling and ac fan assemblies new ams intercooler u kno all that good stuff well i took it driving for the first time and it is getting hot and my cooling fan is not coming on i replaced the temp sensor and that did not helped i checked the fuse and that did not help either i noticed on my cooling fan motor or switch there are 2 plugs that plug into the bottom of it and then there is a place to plug something in off to the right side of the motor/switch but no plug any ideas on wut it is?

 

Thermostat or headgasket?
i had coolant problems and thats what it ended being

 

just put in a new therm and nothing wrong with the head gasket as far as i can tell i mean u wuld be able to tell just simply by looking right? plus im not loseing coolant anywhere except for the overflow tank

 

I had a cooling issue temp gauge would sky rocket in hard acceleration when I let off the gas it would settle back to normal in about 30 seconds. fan would also come on all the time.... I put a new thermostat in and problem solved! I feelt very lucky! if you have no radiator leaks and you replaced your thermostat and still getting the same problem it sounds like your next step would be a compression test. you also might wanna try and drain and replace the fluid... could be air bubbles good luck hope this helps!

 

Well, the OEM fan is multi speed and has a controller that sits right beside it. First the fan or fans need to run and second the OEM fans will move more air than any aftermarket fans I am aware of.

 

compression is good and its all new fluid and wut not cause i just put a brand new radiator in and it is the oem fan