Possibly the EBPV closing at the wrong times - Ford Powerstroke Diesel Forum
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post #1 of 17 Old 01-09-2013, 08:00 PM Thread Starter
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Possibly the EBPV closing at the wrong times

I often notice when it's cold out that when I am just barely on the pedal but not accelerating that I hear a whistling noise that I am assuming is the EBPV. The truck does this even after its fully warmed up and has been for even a half hour sometimes. This is happening when it's around freezing or below. I have a 2000 f350.

Is this something the truck should be doing? If not what could be the cause? When I do start to accelerate the whistle fades out.
Whistle may not be the best word to describe it but it sounds like air pushing past a restriction.
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post #2 of 17 Old 01-15-2013, 03:57 AM
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Yes the truck will do that. It's closing the ebpv to increase eot

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post #3 of 17 Old 01-15-2013, 01:29 PM
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mine has been doing this as well.
its just when its cold so im not worried about it.

99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.

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post #4 of 17 Old 01-17-2013, 08:01 AM
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Possibly the EBPV closing at the wrong times

Is the EBVP something you can do away with? What are the advantages of keeping it or doing away with it?


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post #5 of 17 Old 01-17-2013, 09:17 AM
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Quote:
Originally Posted by sbcauto2012 View Post
Is the EBVP something you can do away with? What are the advantages of keeping it or doing away with it?


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Yes,
Riffraff (sponsor) on here has the kit to do it.
Keep in mind - the EBPV kick's in when the engine's cold and trying warm up to operating temp. 40degrees on up - usually it won't kick in too much.
But when it get's to low 30's and under, and on a cold start, or driving before it's warmed up will kick it in if there is a low load on the engine or just putt'n around. But when you put your foot into it a little - it will go away (and when the engine is fully warmed.)
But in essence, it's doing what it should and working correctly.
If you do the delete - you'll want to get a chip or tuner that has a HIGH-IDLE option for cold start ups to help build a little heat before driving off.
Otherwise, it'll run like crud until it is warmed.

Edit - also - just noticed there is a STICKY in this forum for "Winter Operation".
Might want to look at that...

But mine does it too - Tool'n down the road at 35mph - and hiss'n like crazy when I don't give it too much runtime before taking off.


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Last edited by AzPatMan; 01-17-2013 at 09:22 AM.
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post #6 of 17 Old 01-17-2013, 09:49 AM
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I know there are a couple of write ups out there (Guzzle PSD) and videos on you tube on how to clean the EVBP tube and sensor. If the tube is built up with crud, the valve will not operate properly and cause poor mileage issues. I still have yet to clean mine, but I will sometime soon.

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post #7 of 17 Old 01-17-2013, 11:20 AM
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Quote:
Originally Posted by thebierguy View Post
I know there are a couple of write ups out there (Guzzle PSD) and videos on you tube on how to clean the EVBP tube and sensor. If the tube is built up with crud, the valve will not operate properly and cause poor mileage issues. I still have yet to clean mine, but I will sometime soon.
Different topic - and doesn't apply.

EBPS (Exhaust Back Pressure Sensor) is for the Fuel Mileage. That is at the front of the motor where the tube connects to the sensor and one of the Turbo Up pipes.
Totally different than this issue.

The EBPV (Exhaust Back Pressure Valve) is at the Turbine housing of the Turbo where this is occurring at.

Attached is a photo of what the EPBV looks like at the turbo turbine housing.
This plus the pedestal actuator is what is at work here.
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Last edited by AzPatMan; 01-17-2013 at 11:27 AM.
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post #8 of 17 Old 01-17-2013, 11:24 AM
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Quote:
Originally Posted by AzPatMan View Post
Different topic - and doesn't apply.

EBPS (Exhaust Back Pressure Sensor) is for the Fuel Mileage. That is at the front of the motor where the tube connects to the sensor and one of the Turbo Up pipes.
Totally different than this issue.

The EBPV (Exhaust Back Pressure Valve) is at the Turbine housing of the Turbo where this is occurring at.
The sensor is what tells the valve to open and close - from what I understand.

Mitch

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post #9 of 17 Old 01-17-2013, 11:31 AM
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Negative:
Controlled by the PCM (powertrain control module, or computer that controls the engine and tranny). The PCM uses intake air temp (IAT) and engine oil temp (EOT) as inputs.
When the oil or intake air is cold, the PCM sends a signal to the EBPV to close.
After the engine oil gets up to operating temp, the EBPV may still close some just because of the IAT.


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post #10 of 17 Old 01-17-2013, 11:31 AM
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Quote:
Originally Posted by AzPatMan View Post
Negative:
Controlled by the PCM (powertrain control module, or computer that controls the engine and tranny). The PCM uses intake air temp (IAT) and engine oil temp (EOT) as inputs. When the oil or intake air is cold, the PCM sends a signal to the EBPV to close
ahhh...Learned something today!

Mitch

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