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Transmission take off

2K views 16 replies 3 participants last post by  thecustommuffler 
#1 ·
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
 
#2 ·
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.
 
#3 ·
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.
 
#4 ·
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.
 
#5 ·
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
 
#7 ·
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.
 
#9 ·
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.
 
#13 ·
I`m stumped here. Goin to start pin out on solenoids. Pan is perfectly clean even the magnet! So that leads me to know the clutches are fine and still as new. Last night I returned to stock burn from Innovative tune and driveabilty actually got worse. Thats when reverse shuttered. Any one out there know what direction I should be taking? ANYONE? Thanks
 
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