volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke|Page 2691 > < MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke|Page 2689
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Ignition Cable: Testing and Inspection

PROCEDURE

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Remove spark plug wires (mark position at cap and plug).

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Check wires visually for cracks, rub marks, oil saturation and corrosion at terminals. Replace if needed.

Testing Spark Plug Wire

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Measure overall resistance of each wire. Reading should be between:

4600 - 7400 ohms 

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If reading is correct, plug wire is good.

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If reading is incorrect, measure resistance of spark plug connector only. Reading should be between:

4000 - 6000 ohms 

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If reading is incorrect, replace and retest with new connector.

Connector Testing

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Measure resistance of cap connector only. Reading should be between:

600 - 1400 ohms 

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If reading is incorrect, replace and retest with new connector.

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If both wire connectors are within specifications, replace and retest with new wire.

NOTE:  Ignition wire alone, without connector, should have continuity (approx. 0 ohm).

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Reinstall all ignition wires.

 

MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke|Page 2691 > < MIL ON - Poor Idle/Stalls, Loss of Power, Exhaust Smoke|Page 2689