4-Pin Airflow/Transducer Connector — Intermittent Signal & Oil Contamination (A0285458326 / 805-122-542)

Oil mist and heat cycles can loosen terminal tension or film the contacts, causing erratic airflow or transducer readings. This guide shows the reliable repair.

Common Signs

• Fluctuating readings, rough idle that improves when the plug is nudged
• Oil film inside the connector shell
• Previous repair with mismatched terminals/seals

Permanent Fix

1. De-pin and inspect. Replace terminals if spring force is weak.
2. Clean lightly with electronics cleaner; refit new seals.
3. Re-pin using the correct cavity terminals and confirm latch.

Recommended parts: 4-Pin Airflow/Transducer Connector Kit (A0285458326/805-122-542) ·

Pro Check

After repair, road-test and monitor live data to verify stable readings under load.