Po401
#1
Senior Member
Thread Starter
Po401
Got the egr trouble code today. By the looks of it online it could be 3 different issues, an I stuck having to play the guessing game with this one? Or is there a cost effective way I can trouble shoot this? Thanks guys.
99 4.6l
Drives perfectly fine with the engine light on. Drove 70+ miles with no hesitation or issues. Just FYI
99 4.6l
Drives perfectly fine with the engine light on. Drove 70+ miles with no hesitation or issues. Just FYI
#2
Senior Member
#4
Senior Member
Thread Starter
Took apart the plenum, everything, cleaned everything with electrical cleaner, carb cleaner, I mean everything. Got a tooth brush and all... Cleaned the ports, the truck drives great. No issues, but it's still throwing a code for egr insufficient flow. I found a little bit of water in the egr pressure switch when I took it apart... so do I just move on to the egr and replace it?
#5
Senior Member
The ports are hard to see if you don't know exactly where to look, even with the elbow removed (on the 4sixes only). If your sure you cleaned the correct ports, then you need a new DPFE. Perhaps that's what you mean by pressure switch ? Iduno, but it looks like DPFE time.
#6
Senior Member
Thread Starter
Originally Posted by Jbrew
The ports are hard to see if you don't know exactly where to look, even with the elbow removed (on the 4sixes only). If your sure you cleaned the correct ports, then you need a new DPFE. Perhaps that's what you mean by pressure switch ? Iduno, but it looks like DPFE time.
#7
Senior Member
Thread Starter
It was the sensor, truck was throwing a pending code, I didn't even bother clearing it. Just replaced the part and drove it 10 miles, truck cleared the code itself.