Just thought I'd share some things I learned about exhaust pressure sensors on model year 2005 6.0L engines.
Let me first start off by saying I didnt even know what an exhaust back pressure sensor was untill about a week ago. I kept getting a p0470 code after a problem that immediately started. Symptoms were identical to running out of fuel or clogged fuel filters. Sputtering, lack of power, ect. What the heck is this. Asked my father inlaw (ASE master) and he never heard of an exhaust pressure sensor. So after a lot (I mean ALOT) of reading on this site and google I figured it just needed cleaning, and boy it did. After following directions via a link I found on this site on how to clean the tube and sensor it fired right up and idled just fine. (might I also add thet my sensor was not in the location prescribed in the instructions, it was located on the top of what appeared to be a stainless hard tube coming from the top of the drivers side exhaust manifold eventually being located on the drivers side of the block tucked under the coolant resivoir.) I took it for a drive and immediately noticed a lack of power, now its not making any boost. Took it home and found more codes. P0470, p0472, and p0478. Along with a super/turbocharger under boost code. Wtf. So thinking I damaged the sensor by not following the directions correctly while cleaning it, I asked my father inlaw to order me a new sensor beings he works at a Ford dealership. This is where it gets good... He asks for my vin# and production date (Jan 2005) so he could be positive he ordered the right part... Well... There's two differant sensors, and even the ford dealership could figure out which one to use. I get a phone call asking if I remembered what the sender looked like. Lol. Not really, so I guessed along with my father inlaw and we both guessed wrong. Lol. Theres two sensors and I new they switched sensors sometime in 2005 but we couldn't figure out what I had untill it was taken apart. The only physical differance was the thread pattern. One sensor had an NPT fitting, the other had a flare. My Jan 2005 built f350 had the flare.
So now the trucks in the shop pulled apart waiting for the right sensor and I find this.
So... Now what. I'll just order a new pigtail.... And it gets really good... You can only get the connector / pigtail for that sensor IF YOU BUY THE ENTIRE WIRING HARNESS. I almost fell over at the parts counter. Keep in mind I am at a ford dealership. Then I find this...
So who's to say I even have a bad sensor. I'm gonna replace it anyways but here's the plan...
I cut the female connector of the old / mock up sensor so I could see what was going on when I tried to plug the sensor in. Well to sum it up it didn't plug in.
I used a screwdriver to force the connector together the correct way.
I'll silicone or epoxy it onto the new sender for final assembly. Now that the connector will be permanently affixed to the sensor I'll need a new disconnect.
Look what I found! Lol, off an old wiring harness in the shop. Gonna install it so I have a means of installing/removing the sensor.
Long read.... But I'm still waiting on my parts, lol, just thought I'd share. I don't do much postiing but I do alot of reading. Maybe this will help someone.