Tranny Question
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Senior User
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From: East Tennessee
Tranny Question
Just bought a 2003 F350 with 102,000 miles on it. Truck runs great motor wise, when you drop it in to Reverse or Drive it sorta jumps then kills the truck. Any thoughts? I knew this when I bought the truck.
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
My first thought is, "I wonder what transmission we are talking about." There were two automatics in 2003, the 4R100 with the 7.3L and gas engines, and the TorqShift with the 6.0L engine.
Either way it could easily be low trans fluid. A loose/missing internal filter could do this, along with internal leakage or a worn pump.
Either way it could easily be low trans fluid. A loose/missing internal filter could do this, along with internal leakage or a worn pump.
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Senior User
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From: East Tennessee
My first thought is, "I wonder what transmission we are talking about." There were two automatics in 2003, the 4R100 with the 7.3L and gas engines, and the TorqShift with the 6.0L engine.
Either way it could easily be low trans fluid. A loose/missing internal filter could do this, along with internal leakage or a worn pump.
Either way it could easily be low trans fluid. A loose/missing internal filter could do this, along with internal leakage or a worn pump.
My bad,I just took for granted that since I posted in the 6.0 forum everyone would take it that it was a 6.0........ Yes it is a 6.0 with a torque shift transmission....Fluid appears to be good on the dipstick, doesn't look dark or smell abnormal.....
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,698
Likes: 2,620
From: SE Florida
If you read new posts, which I sometimes do, I don't know which forum a post is located in.
Since the fluid level is good the next step is to check line pressure. There is a port on the driver's side of the trans, just above the pan, towards the front of the trans. It has a black hex head plug in it from the factory. Get a 0-350 PSI gauge with a 1/8" NPT thread and measure the pressure with the shift lever in each gear. In drive and reverse also check it with the go pedal on the floor. DO NOT hold the pedal on the floor longer than 5 seconds, with at least 30 seconds in neutral right after.
Since the fluid level is good the next step is to check line pressure. There is a port on the driver's side of the trans, just above the pan, towards the front of the trans. It has a black hex head plug in it from the factory. Get a 0-350 PSI gauge with a 1/8" NPT thread and measure the pressure with the shift lever in each gear. In drive and reverse also check it with the go pedal on the floor. DO NOT hold the pedal on the floor longer than 5 seconds, with at least 30 seconds in neutral right after.
Postmaster
Joined: Sep 2010
Posts: 3,472
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From: Southern Cal
If you read new posts, which I sometimes do, I don't know which forum a post is located in.
Since the fluid level is good the next step is to check line pressure. There is a port on the driver's side of the trans, just above the pan, towards the front of the trans. It has a black hex head plug in it from the factory. Get a 0-350 PSI gauge with a 1/8" NPT thread and measure the pressure with the shift lever in each gear. In drive and reverse also check it with the go pedal on the floor. DO NOT hold the pedal on the floor longer than 5 seconds, with at least 30 seconds in neutral right after.
Since the fluid level is good the next step is to check line pressure. There is a port on the driver's side of the trans, just above the pan, towards the front of the trans. It has a black hex head plug in it from the factory. Get a 0-350 PSI gauge with a 1/8" NPT thread and measure the pressure with the shift lever in each gear. In drive and reverse also check it with the go pedal on the floor. DO NOT hold the pedal on the floor longer than 5 seconds, with at least 30 seconds in neutral right after.
Very interesting. What numbers should you see in this process to validate one way or the other?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,698
Likes: 2,620
From: SE Florida
5R110 Pressure Chart:
Line Pressure - Idle
P,N - 50 psi
R - 100 psi
D - 70 psi
3 - 80 psi
2 - 80 psi
1 - 80 psi
There are WOT stall numbers also:
R - 320 psi
D - 320 psi
3 - 260 psi
2 - 215 psi
1 - 270 psi
Line Pressure - Idle
P,N - 50 psi
R - 100 psi
D - 70 psi
3 - 80 psi
2 - 80 psi
1 - 80 psi
There are WOT stall numbers also:
R - 320 psi
D - 320 psi
3 - 260 psi
2 - 215 psi
1 - 270 psi
Thread Starter
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Senior User
Joined: Jan 2010
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From: East Tennessee
If you read new posts, which I sometimes do, I don't know which forum a post is located in.
Since the fluid level is good the next step is to check line pressure. There is a port on the driver's side of the trans, just above the pan, towards the front of the trans. It has a black hex head plug in it from the factory. Get a 0-350 PSI gauge with a 1/8" NPT thread and measure the pressure with the shift lever in each gear. In drive and reverse also check it with the go pedal on the floor. DO NOT hold the pedal on the floor longer than 5 seconds, with at least 30 seconds in neutral right after.
Since the fluid level is good the next step is to check line pressure. There is a port on the driver's side of the trans, just above the pan, towards the front of the trans. It has a black hex head plug in it from the factory. Get a 0-350 PSI gauge with a 1/8" NPT thread and measure the pressure with the shift lever in each gear. In drive and reverse also check it with the go pedal on the floor. DO NOT hold the pedal on the floor longer than 5 seconds, with at least 30 seconds in neutral right after.
The only thing is when I shift into gear it kills the motor..... Will I still be able to get a reading???? Has about 2 maybe 3 seconds before it shuts off....
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Postmaster
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From: Southern Cal
Are you pulling any engine codes?
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Thread Starter
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Senior User
Joined: Jan 2010
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From: East Tennessee
Pulling : U1059, P1832, P1876
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,698
Likes: 2,620
From: SE Florida
P1832 transfer case Differential lockup solenoid circuit failed & P1876 transfer case 2-wheel drive codes solenoid circuit failed.
U1059 - SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL
So I see two transfer case codes and one code that there is a data error between the engine and transmission CPUs inside the PCM.
I think you need to install a gauge and see what the pressures are doing.
U1059 - SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL
So I see two transfer case codes and one code that there is a data error between the engine and transmission CPUs inside the PCM.
I think you need to install a gauge and see what the pressures are doing.
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
P1832 transfer case Differential lockup solenoid circuit failed & P1876 transfer case 2-wheel drive codes solenoid circuit failed.
U1059 - SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL
So I see two transfer case codes and one code that there is a data error between the engine and transmission CPUs inside the PCM.
I think you need to install a gauge and see what the pressures are doing.
U1059 - SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL
So I see two transfer case codes and one code that there is a data error between the engine and transmission CPUs inside the PCM.
I think you need to install a gauge and see what the pressures are doing.
Hope to do by this afternoon...
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
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From: East Tennessee
Well I got out playing with the truck shifting it from D to N to R, leaving it in gear just till truck was about to die and then would go to N. Did this four or five times then noticed it kept getting longer and longer each time, till she started moving, been driving around farm last 20 mins or so... Think i will pull cover and change filter and fluid for sure....
