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HOMESERVICE MANUALSPORSCHE1982928 AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEMBOSCH ELECTRONIC IGNITION SYSTEMTESTINGDWELL ANGLE CHECK AND VISUAL CHECK OF PICK-UP COIL ASSEMBLY
1982 Porsche 928 Automatic Trans

Dwell Angle Check And Visual Check Of Pick-Up Coil Assembly

1982 Porsche 928 Automatic TransSECTION Dwell Angle Check And Visual Check Of Pick-Up Coil Assembly
  1. Visually check trigger wheel and pick-up assembly for damage. Also check air gap between trigger wheel and pick-up coil. See Figure.
  2. If damaged or if air gap is not to specifications, replace distributor (if components cannot be replaced individually).
  3. Check dwell angle, and compare it with specifications. If not within specifications, repeat Pick-Up Coil Resistance, Short, and Visual Checks. If OK, then replace control module.
DWELL ANGLE & AIR GAP SPECIFICATIONS

Application Dwell Angle @ RPM Air Gap In. (mm)
BMW 32-53°@1500 .014 -.028 (.36 -.72)
Fiat 1 .012 -.019 (.3 -.5)
Mercedes-Benz 7-25°@ 2 3
Porsche
  911 SC 1 1
  928 25-39°@1500 1
Volvo
  GLT Turbo 45-63°@1500 1
  GLE 45-60°@1500 1
(1) Specification not available from manufacturer.
(2) At cranking speed.
(3) Not adjustable.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.