I found the Ambient Air Temp Sensor! 2008 ProStar...

[Waterloo]

(04-26-2017 )marek4792 Wrote:  I notice on almost every truck including my Volvo has them on the front a Cascadia I drove had two of them right next to each other, I wonder if this would cure rough idle and surge I have had even after putting new injectors and actuators in. On insite mine seems to be stuck at 72°F but I'm not sure if it's part of the mandate d€l3t or not?

I would move them, at least up to the cowl by the wipers... Can't hurt, especially with how they are tied in to the motors ECM. I swear these manufacturers do this stuff on purpose, as no one could be that stupid. Counting the dollars in the shop, that they are.