* Crankshaft Position Sensor (CKP) connector: This sensor provides the engine's rotational speed and position to the Engine Control Module (ECM). Its connector location will be near the crankshaft sensor itself, typically on the engine block near the bellhousing.
* Camshaft Position Sensor (CMP) connector (if equipped): Some 2.8L engines of that era used a CMP sensor. Its connector will be near the camshaft sensor, usually on the cylinder head.
* ECM connector: The main ECM connector receives signals from the CKP and CMP (if equipped), and sends signals to control ignition timing. This is a large connector, often located under the dash or in a protected area near the engine bay. You'll need to trace the wires from the sensors to find the ECM connector.
To find the correct connector:
1. Consult a wiring diagram: A factory service manual for your specific 1985 Oldsmobile Celebrity with the 2.8L FI engine is essential. This will show you the connector locations and wire colors for the CKP, CMP (if applicable), and other relevant sensors and the ECM.
2. Trace the wires: If you have a specific timing component in mind (e.g., you're trying to connect a timing light), locate that component and follow the wires back to their connector.
Without a wiring diagram, pinpointing the exact location is impossible. The location varies slightly depending on the specific year, trim level, and even minor manufacturing variations. A wiring diagram is the only reliable way to find the correct connector.
