E40D line pressure check
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Senior User
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From: NC
E40D line pressure check
Hi, I'm having a problem with my E40D (big suprise huh). Reverse engages fine, but sometimes (not always) when I shift into D the truck just revs up and will eventually start pulling. If I shift it down into 1 when this is happening it will engage and go.
I know that 1 runs a higher line pressure than D does, so I am assuming that maybe the line pressures are low. I found this on the web and was wondering how I could check my pressures?
At idle,
P.55-65
R.75-99
N.55-65
D.55-65
2.55-65
1.75-99
If I do find line pressures low, does that mean that the pump is bad? I had a new Torque converter and a shift kit installed a few months back. Could this be something caused from that?
Any help would be greatly appreciated. I'm getting ready for a trip pulling my 5'r for the first time and don't want any issues because of the junk E40D. Thanks in advance.
I know that 1 runs a higher line pressure than D does, so I am assuming that maybe the line pressures are low. I found this on the web and was wondering how I could check my pressures?
At idle,
P.55-65
R.75-99
N.55-65
D.55-65
2.55-65
1.75-99
If I do find line pressures low, does that mean that the pump is bad? I had a new Torque converter and a shift kit installed a few months back. Could this be something caused from that?
Any help would be greatly appreciated. I'm getting ready for a trip pulling my 5'r for the first time and don't want any issues because of the junk E40D. Thanks in advance.
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
Everything you need is in the link......online shop manual.
1996 Bronco/F-Series Workshop Manual
1996 Bronco/F-Series Workshop Manual
Post Fiend
Joined: Feb 2009
Posts: 8,773
Likes: 1
From: Texas Coast
Probably time for some updates or MSRP connector check.
An Introduction to the E4OD Transmission - Baumann Electronic Controls, LLC
An Introduction to the E4OD Transmission - Baumann Electronic Controls, LLC
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,732
Likes: 2,661
From: SE Florida
If line is low in every position, then it probably is the pump. If it is fine in some and low in others you have leakage in the circuits that are pressurized when the pressures are low.
Post Fiend
Joined: Feb 2009
Posts: 8,773
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From: Texas Coast
Thread Starter
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Senior User
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From: NC
Well that kinda makes since to me. Reverse engages very well and pulls very well. When I shift into D I never really feel it engage like it does in Reverse.
When I had the shift kit installed, I wonder if maybe the tranny guy didn't get the valve body tight and sealed properly.
He had a computer that he hooked up when I first took it in and it would read the line pressures, the shift commands and many other things. I is a really nice computer. I think I will take it by there on tuesday and have him hook it back up and drive it down the road and see what we find.
This didn't start happening till he worked on it. If the pressures were low, shouldn't it be setting a DTC?
Thanks for all the responses and the help. This forum is got to be the best on the web.
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Frmr Ford Trans Engr
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From: SE Florida
The PCM doesn't know what line pressure is. It only knows what it tells the pressure control solenoid to set line pressure at. It could be commanding 200 PSI and you may only get 50 PSI and the PCM won't know that.
If you take that chart and compare line pressure in the computer it will be right every single time, whether or not line pressure is correct or not.
If you take that chart and compare line pressure in the computer it will be right every single time, whether or not line pressure is correct or not.
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Senior User
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From: NC
Which cooler do you mean? Are you talking about the cooler in front of the radiator? If so, its the same one that was on there when I got the truck.
Thanks.
Post Fiend
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From: Texas Coast
Fines can get trap in there and recirculate back to the pump and valves. There is no way to clean them right.
New User
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Hi, I'm having a problem with my E40D (big suprise huh). Reverse engages fine, but sometimes (not always) when I shift into D the truck just revs up and will eventually start pulling. If I shift it down into 1 when this is happening it will engage and go.
I know that 1 runs a higher line pressure than D does, so I am assuming that maybe the line pressures are low. I found this on the web and was wondering how I could check my pressures?
At idle,
P.55-65
R.75-99
N.55-65
D.55-65
2.55-65
1.75-99
If I do find line pressures low, does that mean that the pump is bad? I had a new Torque converter and a shift kit installed a few months back. Could this be something caused from that?
Any help would be greatly appreciated. I'm getting ready for a trip pulling my 5'r for the first time and don't want any issues because of the junk E40D. Thanks in advance.
I know that 1 runs a higher line pressure than D does, so I am assuming that maybe the line pressures are low. I found this on the web and was wondering how I could check my pressures?
At idle,
P.55-65
R.75-99
N.55-65
D.55-65
2.55-65
1.75-99
If I do find line pressures low, does that mean that the pump is bad? I had a new Torque converter and a shift kit installed a few months back. Could this be something caused from that?
Any help would be greatly appreciated. I'm getting ready for a trip pulling my 5'r for the first time and don't want any issues because of the junk E40D. Thanks in advance.
I am having the exact same problem with my 96 F-250 7.3 E4OD. Did you ever get your problem resolved? If so how did you resolve it?
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