Hard/short shifts - Ford Powerstroke Diesel Forum

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post #1 of 21 Old 01-27-2013, 07:55 AM Thread Starter
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Hard/short shifts

95 psd e4od 4x4. I got the truck a few months ago and the (old) guy that I got it from said it shifted hard and always has since he replaced the trans in 2001. I did filter and flush and drained the converter. I dont know anything about the trans other than it was replaced and the converter is painted blue (prob rebuild). filter and fluid change helped a little but not much.

When Its cold out side and i let the truck warm up for 5min or so then take off it shifts like a new truck, nice and smooth and shifts when i should. Now if I let it warm up for say 20min or after about 5min of driving it it shifts super hard. It will kinda drag out 1st gear and slam 2nd, then short shift 2nd and hit 3rd and converter locks instantly and lugs the motor. It will be in OD with the conv. locked by the time i hit 40mph. It does this weather im driving easy or stomping on it. Most of the time when its in OD with the conv. locked it wont downshift for hills etc. unless i really get into it.

Like i said when its cold, It shifts PERFECT.

What do you guys think? Oh and no codes or blinking lights or anything. the truck has 240k and no idea how many miles on the trans. No slipping at all.
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post #2 of 21 Old 01-30-2013, 02:30 PM Thread Starter
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Anybody have any ideas?
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post #3 of 21 Old 02-02-2013, 03:01 AM
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Mine does the exact same thing. I really want to get it figured out. No slipping or codes or flashing OD light on mine either.
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post #4 of 21 Old 02-11-2013, 05:57 PM Thread Starter
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bump, trying to figure this out but im lost.
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post #5 of 21 Old 02-26-2013, 08:17 AM
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95 f350

my 95 does the same exact thing, new tranny 2000 miles ago.............any help here fellas?
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post #6 of 21 Old 04-09-2013, 07:51 AM
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Same issues here.. I now have 90k on the trans since rebuild and it has been doing that since the day it was rebuilt. After it was rebuilt I took it right back to the shop and the guy said it was the nature of the beast and I ve had no issues in 90k miles.

04 F350 With all the mods.
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post #7 of 21 Old 04-10-2013, 02:21 PM Thread Starter
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That is pretty much what happened to the PO of my truck. Had it rebuilt, shifted hard after and they said its "normal" and theres nothing wrong with it. I say it didnt shift like this when it was new, so something can be fixed. I havnt really had the time or the money to mess with it lately, but still looking for answers. Im glad im not the only one with this problem.
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post #8 of 21 Old 06-07-2013, 05:51 PM Thread Starter
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well, my OD light started flickering (not flashing, like codes) and then the light just went out. It will flicker every now and then but is mostly out, from what I can tell, it doesnt have anything to do with hitting bumps or what not, it just randomly flickers. Im prob going to check the plug at the trans and see what i find, when I get a chance. its not my DD and i dont use it much. Being that its a 95 but looks like it has an OBD2 plug, would a snap-on MODIS scanner read the trans codes? we have one at work.
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post #9 of 21 Old 09-13-2013, 02:02 PM Thread Starter
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To the top.
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post #10 of 21 Old 09-18-2013, 01:14 PM
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Try replacing the vss located in the rear diff if not I'd say converter could Also be the culprit

Ben
1995 Ford F-350 Centurion package
6637
3" Diamond Eye down pipe
4" back to 7" stack
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