	As the LTD Crown Victoria became a stand-alone model line for the 1983 model year, the 4.2 L V8 was discontinued altogether, leaving the 5.0 V8 the only engine available on all models (with a 5.8 carburetor V8 engine also available, but only on fleet-usage models, particularly police cars). For 1986, the throttle-body fuel injection system (which turned out to have driveability issues) was replaced by a multi-port "Sequential-Fire" fuel-injection system with a redesigned air intake; the system was based on an OBD-1 compliant Ford EEC-IV computer.