Shudder in OD only - Ford Powerstroke Diesel Forum
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post #1 of 17 Old 08-22-2008, 08:13 PM Thread Starter
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Shudder in OD only

I am having a shudder in OD only going down the road. I checked the carrier bearing, and its good. I have heard of TC shudder. Is this what I am experiencing? It starts to shudder in the gear before OD, then it shifts and it really shudders esp in low RPMs. If I mash it and it shifts into passing gear, the shudder immediatly goes away. Any ideas?

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post #2 of 17 Old 08-23-2008, 07:33 PM Thread Starter
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Bump anyone?

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post #3 of 17 Old 08-23-2008, 07:46 PM
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sometimes even if you wiggle your u joints and they don't have play they may still be worn out and need to be changed.
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post #4 of 17 Old 11-13-2008, 11:12 AM
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Did you ever find what your problem was ???

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post #5 of 17 Old 11-13-2008, 03:51 PM Thread Starter
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Yep. It turned out to be a couple of injectors missing. When you put it under load, lugging it, it makes a shudder. Doesnt do it in the higher rpms cause its not lugging so much.

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post #6 of 17 Old 11-14-2008, 12:20 PM
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Were the injectors bad and have to be replaced or was it a wiring issue ???

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post #7 of 17 Old 11-14-2008, 12:28 PM
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Oddly enough I had the same problem with my 6.0 & I had 2 injectors that went bad and were collapsing at the lower rpm - when the trans went into OD.

I dont understand it - but replaced the 2 injectors and problem went away. That was 10,000 miles ago.
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post #8 of 17 Old 11-14-2008, 02:14 PM Thread Starter
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well, its been so busy I have not had tome to send them to casserly to get gone through. So i still have the problem as of now. I will be fixing it soon though. Things have started to slow down a bit

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post #9 of 17 Old 03-23-2009, 12:48 PM
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WOW I have the same problem! with mine shuttering
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post #10 of 17 Old 03-23-2009, 02:55 PM Thread Starter
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yep. found one injector collapsing under load. causing shudder. if you do a buzz test and a cyl contribution test, you should be able to find it

Nick
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"The Mistress"
Power Hungry Performance HYDRA Chip
Custom Tuned by Bill@PHP, Tony Wildman@Total Diesel Performance and Lars@Gearhead



D66 w/Dieselsite WW2, Full Force 250/100s, Adrenalin HPOP, Built Trans, Walbro Fuel Pump, S&B Intake, 6" Stacks, Leveling Kit, Eagle Alloy Wheels, 315/75/16 Grabber AT2s & Much More




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