1989 FORD F-150 ENGINE PINGS / KNOCKS UP HILLS

  • Tiny
  • 2CarPros-Archives
  • 1989 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 50,000 MILES

1989 Ford F-150 mileage: 50,000. My engine knocks/pings on hills and during acceleration, but only when the engine is warmed up. Switched to 89 octane from 87 but it did not help. Engine has new plugs. Any ideas?

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Thursday, February 17th, 2011 AT 7:18 PM

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  • Tiny
  • 2CarPros-Archives
  • MEMBER

Check ignition timing and the knock sensor; it may be failing. It is located behind the intake manifold in the block

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Thursday, February 17th, 2011 AT 7:20 PM

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