Which Cooling Fans should be working
 

RB5; the drivers side rad cooling fan kicked in when the engine got hot. ok.

passenger side didn't but that was because I didn't have air con connected right?

since then I have connected the air con back up and when I press the aircon button the passenger side fan now kicks in.

BUT now when the engine gets warm the passenger (air con) fan kicks in solely (even when not using aircon), and the drivers side fan doesn't kick in anymore.

any ideas? with one fan still working I suppose its still safe but why only the passenger fan now?

....

rb5 stu ?