1. Rotate crankshaft (6303) to zero degrees top dead center (TDC) on the compression stroke. 2. Disconnect battery ground cable (14301). 3. Drain engine cooling system. Refer to Section 03-03. 4. Remove air cleaner outlet tube (9B659) to throttle body (9E926) . Refer to Section 03-12. 5. Mark and remove vacuum lines to upper intake manifold (9424). 6. Disconnect EGR backpressure transducer hose from EGR valve to exhaust manifold tube (9D477) , loosen lower EGR valve to exhaust manifold tube nut and rotate EGR valve to exhaust manifold tube away from EGR valve (EGR valve) (9D475) . 7. Disconnect the throttle position sensor (TP sensor) (9B989), idle air control valve (IAC valve) (9F715) , EGR backpressure transducer and EGR vacuum regulator solenoid electrical connectors. 8. WARNING: COVER FUEL PRESSURE RELIEF VALVE (9H321) WITH SHOP CLOTH TO PREVENT ACCIDENTAL FUEL SPRAY INTO EYES. Relieve pressure at the fuel pressure relief valve . Refer to Section 03-04A. 9. Remove fuel tube safety clips. 10. CAUTION: Cover fuel tube ends with clean shop cloths to prevent dirt from entering opening.
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