trans. slip in OD - Ford Powerstroke Diesel Forum
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Old 09-15-2008, 07:06 AM
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trans. slip in OD?

So I have a '96 with 196k on the clock. Trans. shifts fine into all gears and reverse, but while cruising in OD it has slipped a couple times while under load (towing or hauling up a hill). It only slips 100-200 RPMs at the most. As soon as I saw/heard it I got off the pedal. Just wondering what area of the transmision this points towards. No OD light flashing & no codes.

thanks

Last edited by CHRI7S; 11-07-2008 at 10:53 AM. Reason: Fixed issue in question
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Old 09-16-2008, 12:20 PM
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Dumb question or just no activity on here?

I did some searching on the boards and all I can find about trans. slip is in regards to when it is shifting, which it does just fine currently. Any thoughts for when it is engaged in OD and slipping?
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Old 09-17-2008, 01:28 AM
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Trans Slip

Are you getting any codes?
Is the O D Off light flashing on your shifter?
It is possable that your convertor is either unlocking, or slipping. Sounds to me like it is just unlocking. Or it could be possable that the OD clutches are worn in the 3/4 clutch pack.
When mine started acting up the OD off light started flashing and the trans started shifting hard. I was hoping that it was the convertor but after replacing that it still had the same problem. So I will be replacing the trans when I get home.
If it was slipping too bad it would start flashing the OD Light. IMHO.
Good Luck

Rick
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Old 09-18-2008, 02:04 PM
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I'm having a similiar problem. Is the trans. slipping or is it like shifting in and out of O.D.? Any codes come up? I have a code P0708 Trans. Range Sensor Circ. High Output.
Good Luck
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Old 09-18-2008, 02:07 PM
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same here for my 96, time for a rebuild w/162,000 on the clock.
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Old 09-18-2008, 02:13 PM
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sounds like the torque converter clutch slipping. good luck, hope it's just the solenoid acting up and dropping out of O/D
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Old 09-18-2008, 02:14 PM
BRS BRS is offline
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Well, I vote TC unlocking assuming you weren't overheating the thing. Every auto I ever had that cooked its clutches did a lot more than a 200 rpm jump when loaded. And, they cooked the fluid in the process. If you stay on the pedal, do rpms keep climbing, steady, or come back down.

Ben
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Old 09-18-2008, 02:32 PM
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hey sikktfruck01, what and where is this solenoid you speak of?
thanks
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Old 09-18-2008, 02:37 PM
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located in the valve body. not sure on the ford trans.
is your trans the E40D ? if so here's a link to a great article Complete E4OD High Performance T
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Old 09-18-2008, 02:39 PM
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cool,thanks
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