Econoline E150 1/2 Ton V8-5.4L CNG VIN M (1998)
13. Disconnect the oil pressure switch connector.
14. Remove the engine cover.
15. Disconnect the No.2, No.3 and No.4 coil-on-plug and the No.3 and No.4 fuel injector connectors.
16. Disconnect the fuel shutoff valve solenoid and the Idle Speed Control (ISC) connectors.
17. Disconnect the rear 16-pin connectors.
