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Help identifying a part

T

TheSiege

Diamond Member
What is this hose/part and should it be connected?
And what error codes might be associated with not having it connected?
1997 expedition
6

http://tinypic.com/r/dmy3oo/6
 
Last edited:
Well I am not sure what anything is at all, just some guidance would be great, basically what is the part that the hose is coming off from and I might be able to follow the prints from there
 
I have these codes and I am wondering if they could be associated with that hose being disconnected

P1151 Lack Of HO2S21 Switch - Sensor Indicates Lean
P0301 Code - Cylinder #1 Misfire
P0401 Expedition 4.6 EGR Low Flow
 
No, there is no reason, I will reconnect it, but since I am no mechanic I like to take all precautions before I change the state of something
 
I'm not certain, but those codes generally seem to match "vacuum hose disconnected".

And you don't want to run too lean.
 
Didn't you already post a thread about these codes and your engine running poorly?

Your pic is broken for me, but the only thing that may be related to a disconnected hose is the EGR code. Vac leak wouldn't cause a single cylinder misfire (probably ignition related) or that O2 code (probably a bad sensor or bad signal wire).

On the left (driver's) side of your engine bay, there is a rectangular sensor bolted to a bracket. Kinda hovers near the throttle body. That's the DPFE sensor and should have two hoses going to it.
 
Whats it going to? I am looking at the diagram from the second post and I am trying to identify what hose it is and where it is going
 
What in the hell am I looking at? That does not look like the engine compartment of any Expedition I've seen.
 
I was not joking.

I have no idea what I am looking at. What I posted is a random GIS result, but it is representative of what I would generally expect to see under the hood of your truck. Your photos are...quite a bit different. Mind sharing what powertrain is actually in your Expedition?

Based on the location of things I can idenify, it looks like the same 5.4L...but are you running some kind of alternative fuel like LPG? What in the shit is attached to your throttle body?
 
Nevermind then, I've been beaten...

Solution: go to a junkyard and pull all the EFI parts that make the engine look different from what you have now. Install and report back.

Alternate solution: Get your CNG setup working. I cannot be of help with this. There are probably very few if any posters here who can.
 
TheSiege said:
Ok, well I am not running the CNG at all, its all gasoline right now. Here is a fun video
http://www.youtube.com/watch?v=zl5NlEZQqag
Click to expand...

But your engine is not set up for gasoline. Look at pictures of a stock engine and observe what has been modified on yours. It is not exactly inconsequential stuff.

Example...you have an EGR code. Find the EGR tube and take a picture of it. Find the plastic DPFE sensor and take a picture of it. Where are they? The DFPE definitely isn't there.

Another example: you're asking what that vac line goes to...well, see that big round things it's sitting by? I and most of the rest of us in the US have no idea what the christ that is. It's slightly detrimental to us understanding it's function.

There may well be some people here who can help you better. But from my POV as someone very familiar with both your (stock) truck and gas engine peformance in general...I can still say that I'm clueless here.

Why is an unused CNG setup there in the first place? What equipment is on the truck that can't be seen in the engine bay? Also...post pics of the entire engine bay, por favor.
 
It says IMPCO 200 on it best I can tell. IMPCO makes CNG/LP carbs and mixers, etc.

Is the big round flat plastic thing a filter/regulator?
 
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