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  #1  
Old 03-04-2013, 12:07 PM
Npinson Npinson is offline
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Question Vacuum line problem with pics

First of all hi everyone.

I have a 2001 3.0 flex fuel 2WD Ranger. I was driving to work yesterday and noticed a very loud air noise coming from the engine compartment. It sounded like the engine was sucking air which makes me think it's a vacuum line. Looks like the line goes to or around the valve covers. The line goes to a sensor at the top of the engine mounted to the aluminum intake manifold. Hot air looks like it melted the plastic sensor. I have no idea why it would have the capability to do this but obviously something is wrong. I'm not sure what the part description is of the sensor or what it's purpose is. I need to order another sensor but I think it's a good idea to find out what caused this happen in the first place. Any ideas?

Thanks
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  #2  
Old 03-04-2013, 12:12 PM
Npinson Npinson is offline
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Default Re: Vacuum line problem with pics

A quick update, I think the part is a EGR Position Sensor. Still why would the plastic melt around the hose connections?



http://www.bwdbrand.com/BWD%20-%20Ju...s/Content.aspx

http://shop.advanceautoparts.com/web...sor#fragment-3

Last edited by Npinson; 03-04-2013 at 12:16 PM.
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  #3  
Old 03-04-2013, 02:08 PM
Prages Prages is offline
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Default Re: Vacuum line problem with pics

That's definitely a problem and it is the EGR Sensor.

They are known to go bad because they are pulling in hot exhaust gasses. I've never seen one melted like that before, though. They normally just stop working.

Maybe you had a bad backfire that somehow came up through the vacuum line and ignited the sensor.
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Old 03-04-2013, 02:15 PM
RoberticusMaximus RoberticusMaximus is offline
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Default Re: Vacuum line problem with pics

yep, thats a EGR sensor (aka DPFE sensor)
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Old 03-04-2013, 07:37 PM
i love fords i love fords is offline
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Default Re: Vacuum line problem with pics

that is your dpfe delta pressuer feedback or something like that it monitors how much exhasut gas is comming through the egr and the egr adust accordingly
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Old 03-04-2013, 09:11 PM
Npinson Npinson is offline
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Default Re: Vacuum line problem with pics

I googled the ford egr sensor symptoms and one potential problem was poor engine performance, and also low power in the engine. I was having problems with my fuel economy and also very slow acceleration. I'm picking up a replacement part tomorrow so hoping this will help. Can't drive in it current state anyways since it sounds like a released air gun in my engine compartment.
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Old 03-05-2013, 06:22 AM
RoberticusMaximus RoberticusMaximus is offline
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Default Re: Vacuum line problem with pics

you might consider replacing the vacuum line that goes where the melted port is... i'm curious if that line melted down too...
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Old 03-05-2013, 07:37 AM
Npinson Npinson is offline
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Default Re: Vacuum line problem with pics

I'm replacing the hoses and clamps as well. There are two ports coming out of the exhaust manifold and two ports from the sensor. Is there a diagram somewhere so that I can connect the hoses properly or are the hoses bidirectional?
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Old 03-05-2013, 07:51 AM
RoberticusMaximus RoberticusMaximus is offline
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Default Re: Vacuum line problem with pics

you have to match the hoses correctly i think.... lets see if i can google up a pic...

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sorry i didn't find anything helpful. but you can clear any codes & hook it up one way, and then wait to see if the dpfe throws a p0401, p1401... or something. THEN just clear the codes again & hook up the hoses the other way lol

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here is some fun reading lol: http://easyautodiagnostics.com/ford_...gr_valve_1.php
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Old 03-05-2013, 07:53 AM
Prages Prages is offline
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Default Re: Vacuum line problem with pics

The hoses are slightly different diameters. No way to hook them up wrong.
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Old 03-05-2013, 08:41 AM
modelageek modelageek is offline
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Default Re: Re: Vacuum line problem with pics

Quote:
Originally Posted by Npinson View Post
I'm replacing the hoses and clamps as well. There are two ports coming out of the exhaust manifold and two ports from the sensor. Is there a diagram somewhere so that I can connect the hoses properly or are the hoses bidirectional?
As stated. That is your DPFE SENSOR. Don't worry about the melting. They do that. Rockauto has the MC and the hoses for about $65. If you buy aftermarket locally get the one with the longest warranty. 15 minute fix. Install the hoses so they don't cross each other . Also clean out the inside of the egr valve with throttle body cleaner. Removing it is best but could be a pain.

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Last edited by modelageek; 03-05-2013 at 08:44 AM.
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  #12  
Old 03-05-2013, 09:06 PM
Npinson Npinson is offline
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Default Re: Vacuum line problem with pics

Quote:
Originally Posted by robertmcclure View Post
you have to match the hoses correctly i think.... lets see if i can google up a pic...

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sorry i didn't find anything helpful. but you can clear any codes & hook it up one way, and then wait to see if the dpfe throws a p0401, p1401... or something. THEN just clear the codes again & hook up the hoses the other way lol

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here is some fun reading lol: http://easyautodiagnostics.com/ford_...gr_valve_1.php

Both hoses blew off, or they came off somehow, from the barb fittings on the exhaust manifold which is the reason I asked. I did buy 2 new lengths of hoses of different sizes that matched the new DPSE sensor. Now sometime this weekend I'll make the repair. Hopefully the barb fittings on the manifold will be different diameters so no guesswork. It's a 50/50 shot anyways.


On a sidenote, I disconnected the battery one time and noticed that the check engine light was gone but came back a few minutes later while driving. Is this an approved method to reset a trouble light or should I have a code reader? I have a computer program with a USB/OBD cable but haven't had much luck yet running any codes or resetting anything.

Thanks for the help so far.
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  #13  
Old 03-06-2013, 06:46 AM
RoberticusMaximus RoberticusMaximus is offline
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Default Re: Vacuum line problem with pics

i believe that if you unhook the battery for a minimum of 30 minutes, it will reset the computer.
...and no prob
good luck
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  #14  
Old 03-09-2013, 10:37 PM
Npinson Npinson is offline
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Default Re: Vacuum line problem with pics

Update

Replaced the DPSE sensor. The 2 different hose sizes was obvious since the hose barbs coming out from the exhaust manifold area where 2 different sizes as well. At the time I bought my parts I didn't know about the EGR valve itself so I didn't buy a new one. I removed and cleaned and polished the valve movement and then tested with a shopvac actually and the diaphragm clearly had movement under vacuum. Everything is running much better now. Most noticeable is my acceleration. Haven't driven it enough yet to tell if fuel economy had improved. Still have a check engine light on though but it could be anything. Haven't scanned at all for codes yet. Next thing to do.
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