05 Expedition drivetrain problem

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Jun 11, 2016 | 05:27 PM

Eklo

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05 Expedition drivetrain problem

Hi. I've got an '05 Exp, 4R75E 4x4, 5.4L. About 185kmi. Love the rig, but it's a complex drive system. I have recently had gear slipping and hunting, particularly when coasting at speeds below 30. Get a new click-clunk (from transfer case? Behind front wheels) when rolling to stop in R or D. Just had flashing Overdrive dash light yesterday, pulled OBD codes, got (from 4x4M) B1317-2F and P1867-6F, and (from PCM) P0731-FF. Trans fluid looks OK, none added since service about 40k mi ago.

Any suggestions??

Last edited by Eklo; Jun 11, 2016 at 05:46 PM. Reason: Message Only partly loaded