EGR Probs
Senior Member
Joined: Jul 2004
Posts: 6,200
Likes: 39
From: Easton, Pa.
If the code/s have not been cancelled, do that next to see if it or another one comes back.
You won't miss anything by trying this.
It may have been a false code or miss read by the last one to read it.
I have seen false codes set before from certain ignition issues that caused it.
I checked on Ford service disc and there is no 404 code listed for any model car or truck with a gas motor, at least as of 2002.
Super Chips code copy does list that code but it may apply to some other setup not a stock motor as normally found in these trucks.
You won't miss anything by trying this.
It may have been a false code or miss read by the last one to read it.
I have seen false codes set before from certain ignition issues that caused it.
I checked on Ford service disc and there is no 404 code listed for any model car or truck with a gas motor, at least as of 2002.
Super Chips code copy does list that code but it may apply to some other setup not a stock motor as normally found in these trucks.
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
If the code/s have not been cancelled, do that next to see if it or another one comes back.
You won't miss anything by trying this.
It may have been a false code or miss read by the last one to read it.
I have seen false codes set before from certain ignition issues that caused it.
I checked on Ford service disc and there is no 404 code listed for any model car or truck with a gas motor, at least as of 2002.
Super Chips code copy does list that code but it may apply to some other setup not a stock motor as normally found in these trucks.
You won't miss anything by trying this.
It may have been a false code or miss read by the last one to read it.
I have seen false codes set before from certain ignition issues that caused it.
I checked on Ford service disc and there is no 404 code listed for any model car or truck with a gas motor, at least as of 2002.
Super Chips code copy does list that code but it may apply to some other setup not a stock motor as normally found in these trucks.
It's a Ford list. I haven't looked on the 2002-2004 Service Info Workshop, Wiring (EVIM), PC/ED, Oasis DVD yet. Player being used currently, but yea, I haven't seen that code on the other lists.
I agree , clear the KAM or erase the dtc to see if it reappears.
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
Senior Member
Joined: Aug 2009
Posts: 1,014
Likes: 1
From: PA
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
so I can?? I can put these on the car?
http://www.autoanything.com/exhausts...0A2606674.aspx
http://www.autoanything.com/exhausts...0A2606674.aspx
Last edited by jbrew; Oct 17, 2010 at 06:08 AM. Reason: added user quotes.
Thread Starter
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Senior Member
Joined: Sep 2010
Posts: 126
Likes: 0
From: Missouri
Was the DPFE sensor. Ford product only and 65 bucks... I still haven't replaced it and they tell me that's why im only getting 15mpg. Other then that nothing is wrong unless your like me and hate that freaking light on my dash on blast... Anyways, that is the problem, i just dont have the extra cash to replace it right now.
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
Was the DPFE sensor. Ford product only and 65 bucks... I still haven't replaced it and they tell me that's why im only getting 15mpg. Other then that nothing is wrong unless your like me and hate that freaking light on my dash on blast... Anyways, that is the problem, i just dont have the extra cash to replace it right now.
Senior Member
Joined: Dec 2006
Posts: 43,539
Likes: 818
From: Joplin MO
Rockauto.com:
MOTORCRAFT Part # DPFE4 {#4U7Z9J460AA} Egr Delta Pressure Feedback (dpfe) Sensor; Clip Mount
4U7E-9J460-AA, 2M5E-9P449-AA
$32.79
http://www.rockauto.com/catalog/moreinfo.php?pk=1147133
MOTORCRAFT Part # DPFE4 {#4U7Z9J460AA} Egr Delta Pressure Feedback (dpfe) Sensor; Clip Mount
4U7E-9J460-AA, 2M5E-9P449-AA
$32.79
http://www.rockauto.com/catalog/moreinfo.php?pk=1147133
Senior Member
Joined: Feb 2011
Posts: 143
Likes: 0
Jbrew,
Cool post. My Check Engine Light just came on yesterday in my '98, and O'Rielly Auto Parts said the code was related to the EGR. This weekend I will pull the throttle body and clean.
Thx!
Cool post. My Check Engine Light just came on yesterday in my '98, and O'Rielly Auto Parts said the code was related to the EGR. This weekend I will pull the throttle body and clean.
Thx!
You installed an EGR valve right? So either unbolt that or remove the EGR pipe flange nut first, before removing the elbow. If you haven't cleaned the elbow/EGR ports since you've owned the truck, I wouldn't worry about testing the valve operation yet. The 4.6L is notorious for plugging up the ports, - they need to be cleaned anyway.
I have a 5.4L , it's a little different (not much). Bolts circled in yeller are what your after. There's four that hold the TB elbow down, -you'll remove all 4 as the final step in removal.
I'm sure you can figure out how to get to this point once you take a look at it -
Like I said , this is a 5.4L. The 4.6L has a smaller EGR valve and the IAC may be in a different location on the throttle body.
There's a "How To" on this site that may assist, - here -
https://www.f150online.com/forums/ar...ttle-body.html
But yea, b2 has the best shot for yuh (above), -his post/pic is a 4.6L and it shows the ports that get plugged.
There's not much else to it.
I have a 5.4L , it's a little different (not much). Bolts circled in yeller are what your after. There's four that hold the TB elbow down, -you'll remove all 4 as the final step in removal.
I'm sure you can figure out how to get to this point once you take a look at it -
Like I said , this is a 5.4L. The 4.6L has a smaller EGR valve and the IAC may be in a different location on the throttle body.
There's a "How To" on this site that may assist, - here -
https://www.f150online.com/forums/ar...ttle-body.html
But yea, b2 has the best shot for yuh (above), -his post/pic is a 4.6L and it shows the ports that get plugged.
There's not much else to it.