OD slip, or electronic malfuntion? - Ford Powerstroke Diesel Forum
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Old 02-10-2009, 09:21 PM
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OD slip, or electronic malfuntion?

I noticed that when my truck is in OD, if I keep my foot on the throttle and put my foot on the brake, my truck jumps out of OD for a second. Idk if this is something is does to help slow it down, or if my electronics are freaking out.

I have bad electros kind of, if I put my wipers on LO, sometimes they will change speed.
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Old 02-11-2009, 06:37 AM
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Are you sure that it's going out of overdrive, or is the torque converter unlocking? On my chevys the compute will unlock the torque converter if you hit the brake when driving. I think they think that you will be decelerating, and need to have he solid connection between the engine and transmission opened back up. I don't think I have ever tried this on the Fords. All my non-superduty trucks are elsewhere right now, so I can't try it today on one of mine. I am pretty sure that the 4r100 trucks don't do that, but I don't really know about the E4OD trucks. It could also me the strategy that your truck uses. Might be an older transmission strategy than other people's.
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Old 02-11-2009, 06:39 AM
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Sorry Eli, yes it unlocks. lol
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Old 03-04-2009, 03:22 AM
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That is normal for most vehicles.
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