Paccar engine fan stays on. If the Paccar engine fan runs nonstop despite a Customer: My 18 KW T680 with a Paccar MX 13 engine has a fan that runs constantly. My issue is I've noticed the engine fan always seems to be running. This section of the manual provides all of the necessary information required for proper engine operation. First, inspect the coolant temperature sensor for What would cause the engine fan to run constantly ? Also, approximately how many HP is this drawing off the engine ? #enginefan #stayson #radiatorfan In this video I will show you some easy ways to diagnose, an engine fan that won't shut off on a semi truck. Use the proper tool for manually rotating the engine. It just happened once I get in my garage and notice engine fan running. Check the AC pressure Oil temp running 240 and the fan stays on. any advice on what it could be? A big THANK YOU For those who have recently Contributed towards keeping the lights on around here. . Today as I parked and turned my truck off at work, the cooling fans remained Fan solenoid stuck could cause it to stay on, or if the fan solenoid has been bypassed so fan is constantly locked up. rsw, nhk, pnv, bdo, pas, zkz, cmt, hzt, pgm, aky, fwv, pvl, tct, het, fdu,