Engine and system faults (Mondeo 3)

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Cause
Elimination
A. The engine starts poorly or does not start at all.
  1. The ignition coil or spark plugs are wet or dirty, so there is no spark.
  2. The plug connection is loose or oxidized.
  3. Spark plugs are damp (after frequent starting attempts).
  4. The position sensor of the rotation speed is free - a large indentation from the flywheel.
  5. The position sensor of rotation speed is faulty; the wire has a ground connection or an open circuit.
  6. Ignition coil defective.
  7. The power module or control unit is defective.
  1. Dry or clean, treat with ignition spray if necessary.
  2. Check and replace if necessary.
  3. Dismantle and dry.
  4. Secure it.
  5. Replace, check the wire or replace.
  6. Replace.
  7. Check and replace if necessary.
B. The engine runs unevenly and has ignition failures.
  1. The spark plug is defective.
  2. Break in the ignition cable.
  3. See A1 – 7.
  1. Replace.
  2. Replace the wire.
B. The engine has no power.
  1. The suction system lets in extraneous air.
  2. The intake air temperature or coolant temperature sensor is not installed correctly.
  3. See A4 – 7.
  1. Check it out.
  2. Check the plug connection, replace the sensor if necessary.






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