Nathan Wallace
New Member
So I know my fan module is faulty (Rad fan runs with KOEO (key on engine off), AC fan never runs even with AC on), and the fan runs for 10 seconds after you turn the car off and walk away.
And I watched a youtube video (linked at the bottom).
Confirmed fan module failure for me.
As a result the car starts to over heat on a 25 degree + day, in slow moving or stand still traffic.
It is fine when driving though, 60kph + and comes back down pretty easy.
Really don't want to shell out $240-$330 (depending on the dealer) for a new genuine one, when it may fail like all the others in time.
And getting a second handy are rare as hens teeth, because everyone grabs them the second they hit the parts yard.
Kind of after a simpler, DIY, better fix.
I was thinking of wiring both fans to come on when the engine starts, and flat out, all the time.
Would just need to source a 12v wire that was active only when the engine was on, and use it to switch a relay, and remove the fan control module all together
Any reason why this is a dumb idea?
I could technically make my own fan control module with the AC 12v input for the AC fan, an arduino, temp sensor (to measure rad temp, just have to work out where to put it) and a couple of relays, but not sure that is necessary.
Maybe wiring it 100% is easier.
Higher duty cycle may cause early fan failure?
I know the older lancers just had 2 relays running everything. I discovered that when I went looking for 2nd hand fan modules.
Anyone done this, or something similar?
Maybe there is a better solution.
And I watched a youtube video (linked at the bottom).
Confirmed fan module failure for me.
As a result the car starts to over heat on a 25 degree + day, in slow moving or stand still traffic.
It is fine when driving though, 60kph + and comes back down pretty easy.
Really don't want to shell out $240-$330 (depending on the dealer) for a new genuine one, when it may fail like all the others in time.
And getting a second handy are rare as hens teeth, because everyone grabs them the second they hit the parts yard.
Kind of after a simpler, DIY, better fix.
I was thinking of wiring both fans to come on when the engine starts, and flat out, all the time.
Would just need to source a 12v wire that was active only when the engine was on, and use it to switch a relay, and remove the fan control module all together
Any reason why this is a dumb idea?
I could technically make my own fan control module with the AC 12v input for the AC fan, an arduino, temp sensor (to measure rad temp, just have to work out where to put it) and a couple of relays, but not sure that is necessary.
Maybe wiring it 100% is easier.
Higher duty cycle may cause early fan failure?
I know the older lancers just had 2 relays running everything. I discovered that when I went looking for 2nd hand fan modules.
Anyone done this, or something similar?
Maybe there is a better solution.