Peterbilt 386 Cab and Sleeper Panels Big Rig Chrome …
Peterbilt 386, 70" Sleeper Panel, Chassis Fairings & Extension $158.99 $163.99 Roadworks
· just go in and put the ecm in test mode....connect it and see if the fan shuts off...it sounds like an ecm problem. pin 11 is the driver for the fan. this is how we check it. we have ran into this a couple of times. need to go into the parameters and check fan run time.