240;c-161872 wroteThanks James.
I assume you're right about it being an electrical problem so maybe I should give your suggestion a go.
However I'm not clear on how my current setup could be interfering with other electrical systems.
I'm not 100% sure. I wire my e-fans the way I drew above and I don't have those issues. The only other thing I do differently is I have the fan supply on a 30A circuit breaker (
this one) rather than a fuse.
Anyway that rambling aside, the main thing an e-fan does to electrics is that when it first starts up it draws a lot of current, momentarily - what's known as
inrush current. That's where it might create strange interactions, as that large load will reduce the voltage available elsewhere, and that's why I wire my fans on their own circuit from the battery, as the battery is more than capable of handling that demand, whereas the alternator (which is already doing other stuff) may struggle for a moment, which also puts a lot of load on the voltage regulator. "But it's all one system" - true, but where you place the load does matter, as every bit of wire creates a small voltage drop, and you want to primarily draw from the battery and let the alternator charge the battery up slower, in the seconds and minutes following.
How to proceed
- Check the ECT isn't faulty, with a multimeter
- Replace coolant, because it's cheap and easy and it just removes that potential problem
- Clear the fault codes, swap a clutch fan back in and disconnect your e-fan setup, and see if the problem keeps coming back
I don't think you can "kill" your coolant in a way that would create the issues you're seeing.
