EBP sensor tube

[timboe02]

Over the last few months I noticed the engine picking up a slight vibration at low RPMs. It wasn’t bad and sort of came and went. With 340k miles I attributed it to age and normal ware.

Well, the other day I pulled into a fuel station and noticed a very rough idle. Before I could wrap my mind around the vibration problem I was engulfed in a cloud of white smoke.

Fast forward to today... After reading many threads here I figured the likely problem was a bad injector. I wanted to check the easy/cheap things first so I pulled the EBP sensor tube to check and clean, it has never been removed. Initially I was disappointed because even though it had carbon residue it was far form being stopped up.

At this point I was focusing on the tube ends and didn’t really look at the tube itself. When I shot some cleaner in it I was surprised to see it shoot out the side. Anyway the photo is what I found.

I hope this is my problem and I ask anyone here with experience, what sort of problems would a hole like this in the EBP tube lead to? Thanks...

[timboe02]

A follow up question.

What function is the EBP feedback signal?

[timboe02]

Replaced the EBP tube and problem solved.

Again, can anyone familiar with the fuel system explain how the EBP sensor is used in the fueling loop? Just curious. Thanks...

[forddieseldoctor]

The pcm uses exhaust back pressure in combination with boost to decide how much fuel to inject.

[timboe02]

Thanks FDD.
So EBP is a primary reference for fueling and boost is another. Are there any other references used by the PCM for base fueling?

[Powerstrokesmoke99]

where is the ebp sensor located?

[97powerstroker]

connects to passenger side exhaust manifold and runs right up to the ebp sensor behind the hpop reservoir.>>>>brian