EBPV Information Request
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Laughing Gas
Joined: Oct 2012
Posts: 872
Likes: 18
From: Jasper, Mn
EBPV Information Request
I was wondering if anyone out there had the specifics on what makes the EBPV operate? I have an idea in mind on how to fix my incorrectly operating EBPV, but first I would like to know exactly how that thing is supposed to work from the factory.
Thanks,
Baatzy
Thanks,
Baatzy
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
While I haven't looked up the exact sensors at play, temperature sensor(s) and Exhaust Back Pressure sensor are used by the PCM to determine if the EBPV is needed. If the EBP sensor is malfunctioning or a mod deleted one of the temperature sensors, then the EBPV may not work correctly. Once everything on the sensor side is in order, there is a valve on the turbo pedestal that is very much like an IPR - it even has the same connector. The PCM will send a signal from 0-100% to modulate how much oil pressure is applied to the EBPV, closing the turbo outlet butterfly valve as needed, and as much as needed for the current operating conditions.
The EBPV control valve can leak, be stuck, have a bad needle valve, be unplugged, or have a bad solenoid. The turbo outlet butterfly valve can get stuck from rust, soot in the housing, or maybe even a bad casting. My housing had a bad casting, and I had to file down a little metal to free up the butterfly valve from being stuck closed.
It's also possible a tune may disable the EBPV, alter the sensor reading so it doesn't work as it should, or mess with the controls in some other way.
Here's a helpful [LINK]
The EBPV control valve can leak, be stuck, have a bad needle valve, be unplugged, or have a bad solenoid. The turbo outlet butterfly valve can get stuck from rust, soot in the housing, or maybe even a bad casting. My housing had a bad casting, and I had to file down a little metal to free up the butterfly valve from being stuck closed.
It's also possible a tune may disable the EBPV, alter the sensor reading so it doesn't work as it should, or mess with the controls in some other way.
Here's a helpful [LINK]
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
Engine oil temperature and/or Air temperature, as well as throttle or brake input determine whether or not it is activated.
There is a solenoid at the pedestal, that allows oil to flow and push on a cylinder to actuate the rod and move the butterfly in the exhaust outlet.
There is a solenoid at the pedestal, that allows oil to flow and push on a cylinder to actuate the rod and move the butterfly in the exhaust outlet.
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
here you go. (see attached).
Basically the valve is actuated by a hydraulic/electric solenoid. The turbo pedestal has a hydraulic cylinder with a rod that extends out to operate the EBPV. Pressurized oil is allowed into the chamber via an electric regulator/actuating valve. When the PCM wants the valve to close, it applies power to that valve and it allows engine oil to pressurize the cylinder which pushes out the rod with closes the door in the exhaust valve.
Hope this helps.
Basically the valve is actuated by a hydraulic/electric solenoid. The turbo pedestal has a hydraulic cylinder with a rod that extends out to operate the EBPV. Pressurized oil is allowed into the chamber via an electric regulator/actuating valve. When the PCM wants the valve to close, it applies power to that valve and it allows engine oil to pressurize the cylinder which pushes out the rod with closes the door in the exhaust valve.
Hope this helps.
Thread Starter
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Laughing Gas
Joined: Oct 2012
Posts: 872
Likes: 18
From: Jasper, Mn
Thanks for the information, I don't know what I was thinking earlier, but somehow got it in my mind that the EBPV was controlled through logic circuits and had multiple sensor inputs into the harness to control it. Maybe it was because they were reviewing digital systems in class????
Anyhow, glad to know that the PCM is the only thing talking to the actuator. My EBPV is a piece of crap mentally, physically, its awesome, because I rebuilt it about 2 years ago.
It turns on generally at an idle, IF I'm not moving, but will not come on if I am coasting in gear. It also comes on, if everything is still cold enough, when I'm driving. However when I mash the pedal, or let off the pedal completely, it shuts off. I can't explain its behavior.
Given this, I am looking at putting in a switch to give me some control over it. I'd like to have OFF, Exhaust Brake, and Normal operating possibilities so I will do some more digging and see if I can get it to work how I want.
Thanks for the info,
Baatzy
Anyhow, glad to know that the PCM is the only thing talking to the actuator. My EBPV is a piece of crap mentally, physically, its awesome, because I rebuilt it about 2 years ago.
It turns on generally at an idle, IF I'm not moving, but will not come on if I am coasting in gear. It also comes on, if everything is still cold enough, when I'm driving. However when I mash the pedal, or let off the pedal completely, it shuts off. I can't explain its behavior.
Given this, I am looking at putting in a switch to give me some control over it. I'd like to have OFF, Exhaust Brake, and Normal operating possibilities so I will do some more digging and see if I can get it to work how I want.
Thanks for the info,
Baatzy
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
According to your description it sounds like it is working correctly for the most part. It used to drive me crazy when I still had it and it would kick in just as I was jumping out into traffic.
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Laughing Gas
Joined: Oct 2012
Posts: 872
Likes: 18
From: Jasper, Mn
Should it be activating while I'm driving? That seems like it could cause some potential issues. At any rate, I would like to have the option to shut it off completely.
Also, yes chip install went decent, but did have to pull the PCM again and clean a little better after first install.
Also, yes chip install went decent, but did have to pull the PCM again and clean a little better after first install.
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
Should it be activating while I'm driving? That seems like it could cause some potential issues. At any rate, I would like to have the option to shut it off completely.
Also, yes chip install went decent, but did have to pull the PCM again and clean a little better after first install.
Also, yes chip install went decent, but did have to pull the PCM again and clean a little better after first install.
Thread Starter
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Laughing Gas
Joined: Oct 2012
Posts: 872
Likes: 18
From: Jasper, Mn
I don't notice a power loss too much, because I usually drive around in the 1200 to 1500 rpm range, so i don't really have a lot of spunk anyways. It also snaps open as soon as i mash it. I just hate to hear that darn thing being activated when I'm driving, it just doesn't sound truck like.
Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
Baatzy,
I'm having a similar problem and intend to remove and clean my tube and manifold port.
There is a good video on youtube how to do it and it looks easy enough.
I'll let you know if it solves my similar problem.
Denny
I'm having a similar problem and intend to remove and clean my tube and manifold port.
There is a good video on youtube how to do it and it looks easy enough.
I'll let you know if it solves my similar problem.
Denny
Thread Starter
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Laughing Gas
Joined: Oct 2012
Posts: 872
Likes: 18
From: Jasper, Mn
Done a little more digging, I think I have found a way to do what I want, but it will have to wait until Thanksgiving, or more likely Christmas break. I will let you guys know what I come up with.
Also, as a side thought, did Ford ever change the functionality of the EBPV? I thought I had read before that it should not activate while driving, is that only for later model trucks, or is it just some hearsay I've heard said on the internet?
Denny, I agree with cleatus12r, according to everyone here my EBPV is working just as it should, so not really a problem based off of how it is supposed to work. However I do agree that it is a problem/nuisance when it comes on while driving. Like I said earlier, if I get my project to work as intended I'll be sure to post up how I solved my particular issue of being annoyed by the darn thing closing while I am driving.
Thanks,
Baatzy
Also, as a side thought, did Ford ever change the functionality of the EBPV? I thought I had read before that it should not activate while driving, is that only for later model trucks, or is it just some hearsay I've heard said on the internet?
Denny, I agree with cleatus12r, according to everyone here my EBPV is working just as it should, so not really a problem based off of how it is supposed to work. However I do agree that it is a problem/nuisance when it comes on while driving. Like I said earlier, if I get my project to work as intended I'll be sure to post up how I solved my particular issue of being annoyed by the darn thing closing while I am driving.
Thanks,
Baatzy
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