Car goes lean when fans come on
Hi all - I was wondering if anyone can shed some light on my situation. My 3 door gets lean when the fans and or any heavy electrical load comes in.
It can be idling at afr 13.8 and when the fans kick in it will lean out to 15.8 - 16 afr and start to hunt! Thats over 2 whole units diff! Is this normal? It will return to 13.8 once fans shut off.
Thanks for any info.
Best.
Tim.