5r110 issues, HELP!
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5r110 issues, HELP!
Hey, gentlemen and women, i need some help, i have a 07 6.0 5r110 with some issues. At this current moment, it has no foward gears or reverse. When in reverse, i am able to push the truck forward. Damn are they heavy! Now, i did have some codes, P0766, P0751, P0756, P2701, P2703, and last P2700. So, i checked the harness, all good, ohmed from PCM through the harness, through the solenoids and back to the PCM connector, everything checked out. All were 4.7 expect the line pressure solenoid was 5.7. Checked to make sure the 3 power wire had greater then 10volts, had source voltage, which was 11.8v. Then i put the connector back on, went topside and make.sure i didnt have a short to power or ground through the harness or solenoids or solenoid harness. Everything checks out. Im asking if you gents, and gals have seen these codes, what do the normally mean, and am i missing something? Oh, i also, replaced the line pressure solenoid and the direct clutch solenoid, new filters(internal and external), used LV and filled. Checked fluid level multiple times. Thanks
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,734
Likes: 2,663
From: SE Florida
You're barking up the wrong tree. It isn't anything electrical. When there is no forward or reverse, something mechanical has broken, or the trans is out of fluid.
If it is a 4x2 and it has fluid, pull the trans out and get it rebuilt or replaced. If it is a 4x4, does park hold, or can you push the truck? If you can push it in park then either the transfer case is in neutral or the transfer case has failed. If park holds, the trans has broken.
If it is a 4x2 and it has fluid, pull the trans out and get it rebuilt or replaced. If it is a 4x4, does park hold, or can you push the truck? If you can push it in park then either the transfer case is in neutral or the transfer case has failed. If park holds, the trans has broken.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
Possible culprits: Line pressure, solenoid(s) / assembly, fluid related, shafts, even the pump. Do you have equipment to command the solenoids and can you do a line pressure measurement?
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Mark, before i put the solenoids in i was able to drive it, atleas kinda of, and Park holds. Able to push the truck and every gear expect park. And i dont have IDS or anything else to command the solenoids nor a line pressue gauage. If mark thinks the trans is junk, ill buy a used one so i can rebuild the one i have in it currently. Mark, is there anything i can check to be 100% sure?! Thank you guys!
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
John -- many other tools can activate those solenoids -- FORSCAN Output Control, Snap-On, etc......................I'd personally like to do those routines first to see if they're "conversational" and give the right responses.............then move on to line pressure which is very telling as well.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
The line pressure will show a lot.
How I know is this. I got dumped one night and when I got it home Mark had me run line pressure and all it would do when in any gear
the pressure would just flutter. Replaced the trans with a Ford reman. They come prefilled and a new oil to air cooler. That leaves you
with flushing the lines and the oil to coolant cooler in the radiator. What I found when I disassembled the trans was the coast clutch sun
ger had broken off the clutch basket where it is spin welded to the clutch basket.
The night it happened it was 25º and dropping. I thought I had hit a patch of ice then I felt it kick. I let off the throttle still thinking
that I had hit one side on the ice and did not want to spinout. Got around the corner and applied throttle and all it did was rev up and not go.
I got the replacement trans from Ed at FICMrepair and it was a good price and I got the two year warrantee coverage. So if your going
to replace it besure to flush the cooler lines and the oil to coolant cooler along with the aux filter assembly. You don't want any crus to get
into what ever you end up putting in.
Here is the coast clutch.
How I know is this. I got dumped one night and when I got it home Mark had me run line pressure and all it would do when in any gear
the pressure would just flutter. Replaced the trans with a Ford reman. They come prefilled and a new oil to air cooler. That leaves you
with flushing the lines and the oil to coolant cooler in the radiator. What I found when I disassembled the trans was the coast clutch sun
ger had broken off the clutch basket where it is spin welded to the clutch basket.
The night it happened it was 25º and dropping. I thought I had hit a patch of ice then I felt it kick. I let off the throttle still thinking
that I had hit one side on the ice and did not want to spinout. Got around the corner and applied throttle and all it did was rev up and not go.
I got the replacement trans from Ed at FICMrepair and it was a good price and I got the two year warrantee coverage. So if your going
to replace it besure to flush the cooler lines and the oil to coolant cooler along with the aux filter assembly. You don't want any crus to get
into what ever you end up putting in.
Here is the coast clutch.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,734
Likes: 2,663
From: SE Florida
Put a 0-350 PSI gauge in the pressure test port on the driver's side of the trans. IT has a 1/8" NPT thread. That will tell you if it's a solenoid or something mechanical.
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