Electrical Radiator Fan Issues...thought I Fixed It

So i just put in a new radiator fan after taking the old one which could barely be spun by hand. The new Fan is a single speed aftermarket fan and at first glance all seemed to be well.


I wired it up to the lowspeed wire (red wire) coming of the stock fan, the first time i turned it on it came one and stayed on while i was idling the car now when I turn the car on it powers on for a second or 2 then turns right off.

I also took the car for a spin and it stayed at a nice temp for a while then I got on it kinda hard on 5 mile hill climb and it started to over heat I pulled over with the stock temp gauge at M and the fan wasn't running so i turned on the heater and coasted down hill to home.

I currently have a Check engine light becuase i pulled the connector to the coolant temp sensor to force the fan to come on at all times.

Is this a Sign of the CCRM going out? As it's maybe the last part of the cooling system for me to replace this year.

Ok so i think i know the issue now. I wired the fan to the low speed wire and after driving it hard it got hotter then the low speed fan so now it won't turn the fan back on until i cools all the way down......Just a theory... because when i was idling around town before the up hill pull the temp stayed stead but once it got past a cretin point it kept climbing....so i can either rewire it to the highspeed wire or find away to make it work on either.