In sure there is a thread on this but one can only search for so long till hair is removed. I have a p0472 code show up and now I have a hard start condition that seems to be getting worse. Also with the code came a lack of boost. I guess my question (which is a 2 part question) is can a bad EBP sensor cause these symptoms and is the sensor a simple pull and replace. I have located the sensor and inspected the wires for which there is no chaffing. Thanks in advance. 2007 F250 CC LARIAT.

 

I learned from these guys here that sometimes your EBP tube can get plugged. I pulled mine off and cleaned. You can also run some weed wacher line down thru it to ensure its clear if you don't want to remove. My EBP sensor was very dry and clean when I pulled it off. Something to inspect.
Also, your EBT, MAP, and BARO should all show very similar numbers...29.0 to 30 ish in inches of hg with KOEO if sensing properly. If EBP reflects in psi, it should be about 14-14.5 psi.
If not tested, get yourself a Dashboss! Great info to help determine issues.

 

I do have a scanguage and this is what I read
Ebp: 6.7 - koeo
Map: 14.7 - koeo
Bmp: 14.7- koeo
My exhaust back pressure volts are 0 at koeo. So is it safe to say my sensor is bad? Not throwing any other codes except for the P0472 for the ebp low voltage.

 

Yep, the EBP sensor should read within.5 psi of the MAP and BARO. You also need to make sure the tube that the EBP sensor is connected to is clear all the way down into the exhaust manifold.

 

Could be either sensor or connecter

 

I did notice that the hoses under the degas bottle for the coolant were laying directly on top of the connector and the wires were laid over. I did check the wire for chaffing but stopped short before the connector. I'll check that out tomorrow. Thanks. And if it is a busted connector and the wires are too close to the plug to repair do they make a pig tail for it?

 

Yes new pig tail. Its a knowen issue

 

Ok I feel a little better now. I'll give it a good once over in the morn. I'm a captain on an offshore supply vessel in the gulf so my time to fix things on my truck is limited. So as soon as problems come up I have no choice but to knock them out as quickly as possible. Thanks. Any clue as to where I can find a pig tail if that's the case?

 

It's made by Alliant part # AP0021

Alliant ICP/EBP Sensor Connector Pigtail AP0021

 

Here's the Ford part # if you go that route.

CONNECTOR - 3-WAY | Genuine Ford | 5C3Z-12224-A

 

It looks like all of your measurements above are in psi, not inches of mercury but would expect EBP to be around 14 plus too.
My EBP volts show 1.7-2.3 KOEO, 2.7-5.7 when running.

Here at KOEO. Volts at 1.74.


While idle with slight surge.

 

Quick question... not trying to hijack... which reading do I look at on Autoenginuity? My ebp reads 13.8 absolute, but only 0.80V koeo.
And my baro reads 30.45... map is 13.7

 

You are reading inches of Mercury with BARO. EBP and MAP is registering in psi which is about half of hg. All good.
Your EBP volts looks good compared to mine. I will see as low as .7 volts at KOEO.

 

Oh, you posted 1.7-2.3. I've got to find out what is making this thing so gutless. I just rebuilt the engine, and it runs great, but will hardly pull itself down the road

 

Ok so I tore into the truck this morning and did an ohm test on the connector. What I found was normal readings for everything but the vref. It ohmed out under what it should be and that, if I'm correct, is a short to ground. Now I have zero volts on that when koeo, so do I have a bad connector or a chaff somewhere. I did trace the wire all the way back til it enters the main harness and there are no visible chaffing areas. I just need to know if I need a new sensor or connector. I also pulled the sensor and cleaned the tube before doing the test. Please help!!!! Time is precious!!!