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2 XE engine DIAGNOSIS 5-5 FAULT: REDUCED POWER AT ALL SPEEDS Possible cause Remedy Poor fuel quality. Drain fuel, rinse the fuel system, replace the fuel Fuel filter blocked. Replace the fuel filter. Accelerator pedal sensor, mechanical defect. Check: mechanical connection sensor/accelerator - accelerator pedal sensor Fault in electrical components/wiring of: accelerator pedal sensor - sensor for engine coolant temperature - boost pressure sensor - fuel temperature sensor - contacts - contact resistance in connector joints Check the electrical system. Air filter clogged. Replace or clean the air filter. Turbocharger defective/incorrect waste-gate Check wastegate or wastegate control. Electro-pneumatic boost pressure valve Check electro-pneumatic boost pressure valve. Air leaks in inlet system. Pressure-test the inlet system. Mechanical defect or clogging of pump units. Replace the pump units. Injector defective. Check the injectors. Pressure-relief valve on pump housing does not Check the pressure-relief valve. Fuel lift pump output too low. Check the fuel lift pump and replace, if 1 ǹ 0008 |