PO476 Code - Diesel Forum - TheDieselStop.com
Power Strokes 1994-1997 General Technical discussion of topics related to vehicles powered by the Power Stroke engine in 1994 through 1997 models.

LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 02-26-2013, 04:00 PM Thread Starter
Junior Member
Join Date: Feb 2013
Posts: 16
Feedback Score: 0 reviews
PO476 Code

Finally got the truck running, after a lot of trouble shooting and a few parts. Now when its cold it starts right up and runs fine, as soon as it hit operating temp, I get a bucking, surge, intermittent CES light. Pulled codes and it comes back as PO476. Where is the exhaust backpressure sensor on a 7.3 powerstroke? Is there a way to test the sensor?
hakukamana is offline  
Sponsored Links
post #2 of 5 (permalink) Old 02-26-2013, 05:03 PM
Senior Member
Join Date: Jan 2005
Location: SE Iowa
Posts: 923
Feedback Score: 0 reviews
Sensor is at the end of a tube I think on the passenger side towards the front. Not entirely sure what it does, but the tube will fill with soot and block the sensor. I think it can be unplugged with no issues.

My Truck:

97 F250 4 door shortbed, E4OD
DIY intake
Kingpin Dana 60
otherwise stock
AaronSEIA is offline  
post #3 of 5 (permalink) Old 02-26-2013, 08:05 PM
Senior Member
Patrick Feeley's Avatar
Join Date: Feb 2000
Location: Tehachapi, CA, USA
Posts: 10,192
Feedback Score: 0 reviews
You can try removing the tube which goes from the front of the passenger side exhaust manifold, under the alternator, and up to the EBP sensor and cleaning it out (as mentioned). I like to use carb cleaner and some wire rope chucked in a variable speed drill to auger out the soot (old aircooled VW trick). Don't forget about the little section left at the sensor and the sensor. There are some pinpoint tests you can do, but nothing like resistance checks (its a variable capacitor). Cheers!

97 F250 SC 4x4 (CA model), E4OD, 4.10 LS, Relocated Block Heater Plug, Ext Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD: 94 F350 CC DRW, 5 Speed, SBC Con-O, Baldwin Filter, Tymar HPX Hose, 3 DP, Bilsteins, $12 AIC, Coolant Filter, Explorer O/H Console, Trans Temp, Boost, and Pyro, Pedestal Mod, Gutted EBPV
Patrick Feeley is offline  
post #4 of 5 (permalink) Old 02-26-2013, 08:13 PM
Senior Member
Stan96's Avatar
Join Date: Oct 2004
Location: Rochester, NY
Posts: 471
Feedback Score: 0 reviews
Mine was about half plugged at about 85k miles, the end by the exhaust manifold was reduced to about an eigth inch, but the end at the senser was open about a quarter inch, after replacing it, i wondered if i shoulda shoved something down into the exhaust manifold to clear it out as well, I read somewhere that the tube being plugged could affect your fuel mileage but i never really checked it that closely at the time

1996 F-350 XLT 4x4, e4od, Electronic-rustproofing, Viper alarm
2004, @32k mi. glowplugs, drag-link, Michlelin's, waterpump
2010, @76k mi. Ball joints, u-joints, rotors
2011, @86k mi. glowplugs, drag-link, trany fluid
2012, @94k mi. Bilsteins, stainless brakelines, fuelbowl, lift pump, waterpump, steering lines, coolant filter
2012, @98k mi. Starter, positive cables, batteries
2013, @104kmi 3"downpipe, Michlelin's, steering damper, rotors, rear diff oil
2014, @115kmi. Injector o-rings, alternator rebuild
Stan96 is offline  
post #5 of 5 (permalink) Old 02-26-2013, 10:07 PM
Senior Member
Join Date: Jul 2009
Posts: 1,480
Feedback Score: 0 reviews
P0476 will not set a CEL. You may need to have a scan (not just a code reader) to verify possible other codes.
Evel486 is offline  
Sponsored Links

  Diesel Forum - TheDieselStop.com > Ford Diesels > Power Strokes 1994-1997 General
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

Register Now

In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome