Unplug the wire going to the oil pressure sender, test resistance between the sensor and ground; should be zero with engine off and very high with engine running; if not, faulty sensor or engine ground. Check for voltage at the sending wire you pulled off of the sensor; I think it's supposed to be 5v with the key "on"; if no voltage, look for a poor connection at the wiring harness in the instrument cluster. Make sure that the connector at the oil pressure sensor is clean and securely attached when you plug it back in. That should cover the simplest and most likely problems.
-- Brett in Portland, OR "Albert" '82 VanaFox I4 Riviera |
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