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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 393 (Symptom Troubleshooting (Engine Control System) AJ) >> No.13 Knocking/Pinging-Acceleration/Cruise >> Notes

No.13 Knocking/Pinging-Acceleration/Cruise: Notes

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
KNOCKING/PINGING-ACCELERATION/CRUISE - DESCRIPTION AND POSSIBLE CAUSE

13 Knocking/pinging-acceleration/cruise
DESCRIPTION 
  • Sound is produced when air/fuel mixture is ignited by something other than spark plug (e.g. hot spot in combustion chamber).
POSSIBLE CAUSE 
  • Engine overheating due to cooling system malfunction
  • ECT sensor malfunction
  • IAT sensor malfunction
  • Inadequate engine compression
  • Inadequate fuel pressure
  • Knock sensor and related circuit malfunction
    WARNING:
    • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
      • Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
      • Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.

        (See BEFORE REPAIR PROCEDURE .)

        (See AFTER REPAIR PROCEDURE .)
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