Delta Pressure Sensor

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Aug 26, 2002 | 10:59 AM

F15001

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Delta Pressure Sensor

Just found out my Delta Pressure Sensor is bad in my 2001 F-150. Have a small idea what it does but is it possible to change it or does it need to be done by the garage?

Aug 27, 2002 | 12:14 PM

Opera House Works

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From: Cincinnati

Delta Pressure Sensor

I assume that you are talking about the sensor that measures the differential pressure in the EGR tube to measure flow. This is usually mounted on a cool place like the intake manifold with two screws and connects to the EGR tube with two push on high temp hoses. This is easy enough to replace IF it is actually bad. Trouble is there are other problems that may make the computer think it is bad. I think wellsmfgcorp.com (aftermarket sensor manufacturer) might have a counter talk issue that covers this.

Aug 27, 2002 | 10:46 PM

aldridgec

Logistics Pro

Joined: Mar 2002

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From: Wake Forest, NC

Delta Pressure Sensor

>This is usually mounted on a cool place like the intake
>manifold with two screws and connects to the EGR tube with
>two push on high temp hoses. This is easy enough to replace
>IF it is actually bad.

Depends on the code too. A bad EGR valve, EVR (Egr Valve Regulator) burned or missing DPFE hose etc. They go bad often enough however that replacement isn't too unlikely.

Chris

Aug 29, 2002 | 10:02 AM

MrBSS

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From: Chicago Area

Delta Pressure Sensor

Mine was replaced under warranty (2001 F150 4.6). It doesn't look like it was difficult, but as an emission item, I think they have to replace it even if you're past 36,000 miles.

Out of curiousity, do you have a K&N air filter? My differential pressure sensor failed shortly after I installed my K&N. Everyone says its unrelated, but it seems like too big a coincidence. I have not reinstalled my K&N.

MrBSS

Aug 30, 2002 | 03:11 PM

rkilpa

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From: Watauga USA

Delta Pressure Sensor

MrBSS,

I'm curious about the connection between the K&N filter and the DPFE. Would you mind sharing some detail? I plan on installing the K%N also, but would like to have a heads-up on this first.

Aug 30, 2002 | 08:09 PM

70f100longbed

Fleet Mechanic

Joined: Aug 2002

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From: Raleigh USA

Delta Pressure Sensor

I don't think there is any connection with a K&N and a bad DPFE. I work at a Ford dealer and these things go bad on everything Ford makes. They are just cheap parts. If you hvae access to a scan tool that can monitor datastream just monitor the DPFE voltage with the key on engine off. A good sensor should be between .6v and 1.2v. Any higher or lower and its bad.

Sep 1, 2002 | 09:09 PM

MrBSS

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From: Chicago Area

Delta Pressure Sensor

I agree that the previous poster is probably right, however, mine failed about 2 hours after I installed the K&N. I don't see how it could have affected it, but it seems like a rather too big coincidence!

Subsequently I got reason to doubt that the K&N does as good a job on fine dust as a quality conventional filter. Since my 4.6 uses the same conventional filter as the 5.4 and the V10, it seems unlikely it would limit the air flow in my application. All this together caused me to not reinstall the K&N.

If you do decide you want one, I can offer you a good deal on a barely used one! Actually, I hope I can still return it or else I'll probably list it on eBay.

MrBSS