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Overdrive bogs/slip under 55mph

posted by  ODGuru on  Fri Jul 28 11:25 CST 2006
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last visit: Sat Oct 4 18:52 CST 2014
[RELATED]

First, check tranny fluid level. OD shares with trans and must be very close to full to function properly. Carefully with the wrenches and breaker bars. Non access tends to lock the plugs in very well.

If OK, sometimes a fluid change (2.4 qts) will help for a little while. Maybe even longer if the O-rings are not to far gone and accept some fluid to soften them up some.

Bottom Line is most likely fluid is starting to leak past the actuating piston O-rings which get old and hard even when not being used. Eventually the fluid will blow past and you will not hvae OD at all. Just prior to this stage the OD will stutter and slip before it finally engages. It may also only engaage when cold but not after any use.

See 700-900 FAQ's under M46 for info.

Duane






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