The actuator is tested with a hand operated vacuum pump. Testing is performed with the engine off (not running) as follows: 1. Operate wastegate lever…

The electronic pedal is unique to models equipped with a turbo charged engine. It consists of a pedal, arm, and position sensor (potentiometer), attached to…

The wastegate valve controls boost. It is operated by the vacuum actuator. Opening the valve stops boost and closing the valve generates boost. Boost levels…

The turbocharger used on 6.5L diesel engines is a Borg Warner model 1H1 (Figure 2-7). Lubrication is by engine oil from the engine lubrication system.…

POTENTIAL CAUSE 1. Prolonged high speed – high load operation. 2. Air cleaner/filter partially plugged. 3. Fuel leaks in lines, hoses at connections. 4. Restriction…

POTENTIAL CAUSE 1. Dirt, debris blocking air flow through coolers, condenser, and radiator. 2. Low coolant level. 3. Serpentine belt loose, worn, or tensioner inoperative.…

POTENTIAL CAUSE 1. Loose engine accessories: – Alternator – A/C compressor – Power steering pump – Mounting brackets – Pulleys – Belt tensioner – Serpentine…

POTENTIAL CAUSE 1. Prolonged high speed, high load, or overload operation. 2. Incorrect oil grade used for high ambient temperature operation. 3. Oil leaks at:…

POTENTIAL CAUSE 1. Long idle periods. 2. Low grade fuel. 3. Fuel tank vent restricted. 4. Fuel return line restricted. 5. Engine problem (low compression…

POTENTIAL CAUSE 1. Low grade diesel fuel. 2. Over rich fuel mixture: – Drain/return lines restricted. – Injector(s) stuck open. – Engine speed or throttle…