Transmission help
Thread Starter
|
Cross-Country
Joined: Jul 2014
Posts: 91
Likes: 4
From: Nevada
Transmission help
I am working on my dads 2004 f350. 6.0 auto 4x4. I pulled the transmission after it was stuck in forward gear in all selections. I replaced it with the transmission from my 2005 f250 6.0 auto 4x4. The parts truck has been sitting for about 5 years after the engine blew. The trans was good when parked. The trans installed smooth and the flexplate and torque convertor bolts were torqued to spec. After install i noticed the pins in the main harness on the 2 trucks did not match up. I pulled the pan on both transmissions and changed out the valve bodies and internal wiring harnesses. Plugged everything in and put it back together, added oil. The truck has nothing in any gear. Does anyone have suggestions before i pull the trans back out?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,703
Likes: 2,624
From: SE Florida
How much oil? What does the dipstick show when checked with the trans in park and the engine idling?
You could put a pressure gauge in the test port on the driver's side of the trans. This would show if the pump is making any pressure.
You could put a pressure gauge in the test port on the driver's side of the trans. This would show if the pump is making any pressure.
Thread Starter
|
Cross-Country
Joined: Jul 2014
Posts: 91
Likes: 4
From: Nevada
I cant think of it at the moment, but i filled the torque convertor before install, added 4 qts, started the truck and continued to add more. The trans got to operating temp and it was right at the top of the hot side of the dipstick
Thread Starter
|
Cross-Country
Joined: Jul 2014
Posts: 91
Likes: 4
From: Nevada
I have not put a gauge on it yet, but i have scanned for codes and all i ever got was a p1000 and a low voltage abs code. The batteries did run down on the initial startup and i had to jump it
Logistics Pro
Joined: Jul 2014
Posts: 4,673
Likes: 531
From: Houston, Texas
I am working on my dads 2004 f350. 6.0 auto 4x4. I pulled the transmission after it was stuck in forward gear in all selections. I replaced it with the transmission from my 2005 f250 6.0 auto 4x4. The parts truck has been sitting for about 5 years after the engine blew. The trans was good when parked. The trans installed smooth and the flexplate and torque convertor bolts were torqued to spec. After install i noticed the pins in the main harness on the 2 trucks did not match up. I pulled the pan on both transmissions and changed out the valve bodies and internal wiring harnesses. Plugged everything in and put it back together, added oil. The truck has nothing in any gear. Does anyone have suggestions before i pull the trans back out?
Fleet Mechanic
Joined: Nov 2016
Posts: 1,343
Likes: 94
Trending Topics
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
Two possible issues:
(1) Grounds -- this trans needs solid grounds -- on disassembly-reassembly I carefully/repeatedly clean all grounding surfaces (e.g. engine to bell housing)..............use a DVOM to verify all grounds (e.g. trans to chassis, engine to chassis, batteries, etc)
(2) Pump (on start up) --- my guess is you fried the high volume pump -- this can happen from a BAD GROUND or RUNNING IT WITHOUT THE PROPER AMOUNT OF FLUID.
I first add fluid to the converter, then add 8 qts, run the vehicle ONLY 3-5 seconds, stop, then add 8 add'l quarts, run the vehicle ONLY 3-5 seconds again, stop, check level, fill as required. (It holds 5 gallons)
Worth Repeating: You can take that pump out ON START UP quickly if you have bad grounds or if you run it too long without the proper amount of fluid.
(1) Grounds -- this trans needs solid grounds -- on disassembly-reassembly I carefully/repeatedly clean all grounding surfaces (e.g. engine to bell housing)..............use a DVOM to verify all grounds (e.g. trans to chassis, engine to chassis, batteries, etc)
(2) Pump (on start up) --- my guess is you fried the high volume pump -- this can happen from a BAD GROUND or RUNNING IT WITHOUT THE PROPER AMOUNT OF FLUID.
I first add fluid to the converter, then add 8 qts, run the vehicle ONLY 3-5 seconds, stop, then add 8 add'l quarts, run the vehicle ONLY 3-5 seconds again, stop, check level, fill as required. (It holds 5 gallons)
Worth Repeating: You can take that pump out ON START UP quickly if you have bad grounds or if you run it too long without the proper amount of fluid.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
Surprised you guys haven't heard of this -----Grounds and that High Velocity Pump ----> Well known, well documented problem across the industry --- tune in at 1:15 on the following:
And again from Dave --- I have the ATRA seminar data on the problem he's referring to (pump "tracks", "welding")..........buried in my archives, will see if I can locate it later..............
And again from Dave --- I have the ATRA seminar data on the problem he's referring to (pump "tracks", "welding")..........buried in my archives, will see if I can locate it later..............
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
Have seen with my own eyeballs (DVOM) aforementioned voltage drop differences in ground planes / potential. Many shops have reported on these "alternate" pathways. Gary's one of the best in the business (we trade emails frequently), Bill's a knucklehead blowhard:
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,703
Likes: 2,624
From: SE Florida
I understand the ground problem. Nowhere in the first video does he talk about a high velocity pump. I've never heard of a high velocity pump,. What is that?
The pump runs at engine speed. Pumps have always run at engine speed. How does this one become a high velocity pump?
The pump runs at engine speed. Pumps have always run at engine speed. How does this one become a high velocity pump?
Fleet Owner
Joined: Nov 2003
Posts: 27,881
Likes: 3,595
I understand the ground problem. Nowhere in the first video does he talk about a high velocity pump. I've never heard of a high velocity pump,. What is that?
The pump runs at engine speed. Pumps have always run at engine speed. How does this one become a high velocity pump?
The pump runs at engine speed. Pumps have always run at engine speed. How does this one become a high velocity pump?
Also, where exactly would be the conductivity path between the trans, transfer case, driveshafts, axles, etc. to the frame and it's connected body tub?
I hear them talking about the issue in general in the videos (except Bill's - I don't need to watch that one again) and I just don't see it being the issue that they are making it out to be. I also don't recall anyone on a forum talking about it happening to them (which isn't a proof positive of anything, but it might be an indication of the frequency of the issue). That said - been wrong before, and no doubt will be again.