I've searched quite a few OAT issues, but never have I found this one.
If the AC is off, all is well. The OAT registers properly. The minute I turn the AC on, it starts climbing about 2*F a minute !, even at highway speeds. This is the OAT, NOT the coolant temp !
If I turn the AC off, it will...
outside ambient air temp sensor
missing oat sensor as it only runs to OBC with no impact on engine systems
I dont really care BUT now that it is missing I get OBC warning it is -35F ..."very cold "
anyway I would like to spoof the OBC with a false sensor or ???
want to just put a resister...