Fuel Pressure Release
WARNING:
Always release fuel pressure before disconnecting any fuel injection-related component. DO NOT allow fuel to contact engine or electrical components.
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See the COMPUTER RELEARN PROCEDURES
article in the GENERAL INFORMATION section before disconnecting battery.
- Remove fuel pump relay from power distribution center, located on driver's side front fender, near battery. Fuel pump relay is the second relay from rear (firewall side) of power distribution center. See Fig 1 .
- Start engine and allow to idle until engine stalls. Attempt to start engine several times. Once engine will not restart. Turn ignition off.
- Disconnect electrical connector from any fuel injector. Connect jumper wire between one electrical terminal on fuel injector and positive battery terminal. Connect another jumper wire to remaining electrical terminal on fuel injector.CAUTION: DO NOT apply battery voltage to fuel injector for more than 4 seconds or fuel injector may be damaged.
- Momentarily touch remaining end of jumper wire to negative battery terminal for no more than 4 seconds. This energizes fuel injector and releases most of the fuel pressure. Fuel lines may now be disconnected. Cover fuel lines with shop before disconnecting, as some residual fuel pressure may exist.
- Disconnect jumper wires. Reinstall electrical connector on fuel injector. Reinstall fuel pump relay. Diagnostic trouble codes may be stored in Powertrain Control Module (PCM) when fuel pump relay was removed. To clear diagnostic trouble codes from PCM, see TESTS W/CODES - 3.0L article.