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This pdf files is contain information about simple tips for Audi engine, such as : ENGINE DOESN’T START, FAULT: Engine doesn’t start or stalls briefly after the start - ECU disabled, CAUSE: The ECU is intermittently disabled Because of a fault in the immobiliser (transponder).Due to corrosion on the connectors of the immobiliser control unit there are often loose connections. SOLUTION: If the immobiliser control unit has no fault stored, the cause is a loose contact or an excessive transition resistance on connectors or earth connection. · Check the earth cable and earth contact for the immobiliser control unit. · The cables of the control unit must be routed free of tension. ENGINE DIFFICULT TO START WHEN WARM, AFFECTED MODELS: 1.9L TDI 181 KW only with manual gearbox engine code AFN. FAULT: Engine difficult to start when warm, only after approx. 20 seconds of starter operation. CAUSE: The starter motor is not revving fast enough. SOLUTION: Check the battery. If no fault is found, carry out a test by programming the ECU to automatic gearbox. If the engine then starts normally, replace the starter motor. After replacing the ECU recode to manual gearbox. INCREASED IDLE SPEED AFFECTED MODELS: Model year 96 Magneti Marelli 1AV, 1.6L, AEE engine. FAULT: Increased idle speed (max. 2,500 rpm) after starting the engine with a coolant temperature between 18deg.C and 29.5deg.C CAUSE: Software problems lead to increased idle speed (max. 2,500 rpm) after starting the engine with a coolant temperature between 18deg.C and 29.5deg.C. After approx. 40 seconds or after the first acceleration the idle speed returns to normal. NO ACCELERATOR RESPONSE. No accelerator response, engine only runs at idle speed. Fault entry: ‘777′-”sender for accelerator pedal position implausible signal”. Check, whether the seal ring is present or incorrectly fitted. If necessary fit or adjust the seal. Check the engine ECU and the plug for water or corrosion. Clean the parts or replace them if corroded.
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