Transmission take off - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 16 (permalink) Old 05-17-2017, 06:46 PM Thread Starter
Kenner, LA
 
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Transmission take off

This truck now at stops takes off in second gear. Progressively got worse. Just cleared adaptive learn and took a ride and all seems well. What causes this? This truck now has 19,600 on the clock all original. Thanks

03 350, drw, 4 wheel 6.0


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2002 F250 7.3/auto
2003 F350 DRW 6.0/auto
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post #2 of 16 (permalink) Old 05-18-2017, 12:25 AM
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Re: Transmission take off

It's confusing when you post multiples threads about the same problem.

As I said in your other post, get the codes read. Without the codes NOBODY knows what's wrong, but we can all guess.

Mark
Former Ford Automatic Transmission Engineer

“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
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post #3 of 16 (permalink) Old 05-18-2017, 12:35 AM Thread Starter
Kenner, LA
 
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Re: Transmission take off

Thanks for the reply but I responded to another thread about hard shifts. My truck would take off in second then once I got going it would down shift. Now for my problem: I scanned with my genesis as well as my maxidas. Old codes from alternator diode gone (P1876, P1359, P1318). Those were only codes in entire truck. So today one of my guys cleared adaptive learn and although I`ve only put about 3 miles on the truck it hasnt happened again. I did run truck through all gears then way back took a route with a stop sign every corner. Not a single hiccup. Just wondered what would cause this.


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post #4 of 16 (permalink) Old 05-19-2017, 02:18 PM Thread Starter
Kenner, LA
 
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Re: Transmission take off

Driving this am to shop transmission acting really strange 2-3 and 3-4 was very slight and felt like not fully engaging. Then felt like front rotors were locked and tow/haul onshifter was blinking. Could toggle button and it felt as if something would engage/disengage but never stopped flashing. Pull over for turn off/ restart. No more flashing tow/haul but deffinately something wrong. Pull codes: P0730 and P02703. Any help appreciated. Trani fluid fine and clean. Dipstick was pretty hot. When pulling codes trani temp was 122.


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post #5 of 16 (permalink) Old 05-19-2017, 02:45 PM Thread Starter
Kenner, LA
 
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Re: Transmission take off

Looking in datastream all P0730 are "off" at idle. This is after clearing codes. Trani temp holding at 111. Secondary codes: P1876 in GEM/CTM, B1359 in GEM/CTM and B1318 in GEM/CTM, Secondary System Airbag. Current actual mileage 19814.3. That is no lie and its an 03


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post #6 of 16 (permalink) Old 05-22-2017, 04:36 PM Thread Starter
Kenner, LA
 
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Re: Transmission take off

summary: pinout reveals PHV solenoid out of spec. This is for electronic shift on the fly. My question is, how would this affect 2wd transmission operation? Thanks


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post #7 of 16 (permalink) Old 05-22-2017, 05:17 PM Thread Starter
Kenner, LA
 
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Re: Transmission take off

My moto has always been that you cant break something thats broke so dissection enables understanding of operation. Who thought it would be a great idea to put some foam pad at the vent holes in the PHV solenoid. This foam is now like peanut butter. Looks like it too. Blowing through it I can now blow through both vents. New solenoid this will be removed.


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post #8 of 16 (permalink) Old 05-22-2017, 05:41 PM Thread Starter
Kenner, LA
 
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Re: Transmission take off

Once new part comes in from Ford I will post wether fixed repair or not. This for code: P1876 that no matter what I could not delete.


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post #9 of 16 (permalink) Old 05-22-2017, 08:48 PM Thread Starter
Kenner, LA
 
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Re: Transmission take off

Old PHV had one bad side No continuity, no resistance. Installed new part, code still there but trani shifts are back. Will no with some drive time for sure. 2-3 shift not as crisp as previos but may be a re-learn. Also got a very slight better brake pedal. Not much but noticeable to me. Code still in system as secondary oem code. Will report back after a lil drive time. I still, after looking at schematics, do not understand how this could affect 2wd shifting unless through somehow the 4wd module.


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post #10 of 16 (permalink) Old 05-23-2017, 01:01 AM Thread Starter
Kenner, LA
 
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Re: Transmission take off

update: transmission shifts weak from 2-3 then from 5 back to 3 hunting. Codes in GEM/CTM: P1876 codes in transmission: P0730, P2703


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