Auto Trans Failing - Ford Powerstroke Diesel Forum

 
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post #1 of 7 Old 03-21-2010, 11:26 AM Thread Starter
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Auto Trans Failing

Yesterday I was pulling a full 24' trailer loaded with logs and the bed was fully loaded, between a first and second gear shift there was a loud groaning. Then it didnt feel like it was shifting right after that. Any ideas?

Early 99 D.O.B. 5/98
F250 4x4 Auto
Supercab 8ft box
D.I.Y. C.A.I.
GPR indicator, just so Iknow when its working
Other than that its pretty much stock
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post #2 of 7 Old 03-21-2010, 04:26 PM
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More info...miles mods..
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post #3 of 7 Old 03-21-2010, 06:28 PM Thread Starter
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110K on the ticker, the truck is pretty stock, normal size tires, stock exhaust, no tuner. It does shift into 3rd pretty hard though, its done that since Ive owned it. I took it to a trans shop 3yrs ago and they said it shifting when its supposed to and all looked good on the scaner.

Early 99 D.O.B. 5/98
F250 4x4 Auto
Supercab 8ft box
D.I.Y. C.A.I.
GPR indicator, just so Iknow when its working
Other than that its pretty much stock
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post #4 of 7 Old 03-22-2010, 01:00 PM
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Sometimes, clutches that can't hold the load, groan, grunt, or chatter instead of just slipping. This is usually with good clutches and good fluid but low pressure. Ck fluidlevel first.
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post #5 of 7 Old 11-19-2010, 01:55 PM Thread Starter
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I pulled the pan expecting to find alot of debris and much to my supprise, nothin. Nothing unusual, the magnet looked like a catapiler but so has every other pan magnet Ive ever seen. No shiny hard parts found. Could the problem be linked to a bad solinoid?

Early 99 D.O.B. 5/98
F250 4x4 Auto
Supercab 8ft box
D.I.Y. C.A.I.
GPR indicator, just so Iknow when its working
Other than that its pretty much stock
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post #6 of 7 Old 11-20-2010, 03:29 AM
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Bad solenoids are very rare. If you don't have a 300 lb pressure guage, you can't test the solenoid pressure control.
Is that the only time the trans made the noise?
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post #7 of 7 Old 11-23-2010, 01:29 AM Thread Starter
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Did it again last night hauling a load of wood. Groaning sound between shifts, didnt catch if it was 1-2 or 2-3 shift (merging into traffic) maybe 30mph.

Early 99 D.O.B. 5/98
F250 4x4 Auto
Supercab 8ft box
D.I.Y. C.A.I.
GPR indicator, just so Iknow when its working
Other than that its pretty much stock
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