Tsb 07-26-02

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12-14-2007, 08:57 PM

Maxium4x4

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Tsb 07-26-02

6.4L - INTERMITTENT NO START / LACK OF POWER - DTC P0003 AND/OR BLOWN FUSE 74 - BUILT PRIOR - 8/20/2007

Unplug connector C1926 near the high pressure fuel pump cover.
Check pin 4 green/white and pin 2 yellow wires for a short to ground.
1. If either one is shorted to ground, remove the high pressure fuel pump cover and replace the pump cover gasket/harness that contains the grounded wire ONLY. The high pressure fuel pump does not need to be removed and replaced. Refer to the Workshop Manual (WSM), Section 303-04C.
2. When removing the low pressure fuel lines and high pressure fuel tubes from the high pressure pump, use a back up wrench on the high pressure pump fittings to make certain that the fittings are not loose as the cap nuts and high pressure fuel tubes are removed (this may cause a fuel leak).
3. When installing the new high pressure pump cover gasket/harness, verify that the VCV wires are wrapped in either high temperature convolute or a mesh style abrasion wrap.
4. When making electrical connections to the high pressure fuel pump, pull the connectors to verify connectors are locked in place.

Last edited by Maxium4x4; 12-14-2007 at 09:00 PM.

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