B4000 SE Cab Plus 2WD V6-4.0L OHV (1998)
Air Cleaner Fresh Air Duct/Hose: Service and Repair
1. Disconnect the intake air temperature (IAT) sensor electrical connector.
2. Remove the crankcase ventilation tube.
NOTE: Visually check the engine air cleaner intake tube and duct for any foreign objects or restrictions.
4. Install in reverse order of removal.