Every time the fan comes on the Afr's go into the 10's and it tries to kill the engine, when the fan swiches off everything is normal again
I have my fan wired on a seperate circuit taking power from the alternator, where the looms take their power. Should the fan really be taking that much power or could there be a fault with the fan? Seems to work well tho. Would taking the power for the fan from the battery instead of the alt help?