2000 Ford Taurus CAN YOU SAY DFPE?

Tiny
READY2GOWWFONMECHANIC
  • MEMBER
  • 2000 FORD TAURUS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 129,000 MILES
Ok heres my problem, I have a 2000 ford taurus se, 129000 miles. Engine light on constant. Had codes checked first had 401 which was dpfe. Tubes were gone not connected to anything replaced and reconnected. Still had light on after codes cleared. Had checked again got code 400. Replaced egr. Reset code again. After driving about 4 miles light came back on. Had checked again got code 401 again. Ok after further inspection found wiring harness was cracked on dpfe. Replaced harness and dpfe again. Drove about 35 miles light came back on still reading code 401. What in creation could this be?
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Sunday, February 24th, 2008 AT 1:57 PM

15 Replies

Tiny
MASTERTECHTIM
  • MEMBER
Did you try applying vacuum to egr valve with engine running? You need to check if there is flow through egr valve.
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Sunday, February 24th, 2008 AT 2:03 PM
Tiny
READY2GOWWFONMECHANIC
  • MEMBER
Mechanic claims to have check it even appears that he replaced some the tubing to the egr. I even took this car to the dealer ship. They keep saying dpfe. I brought 2 of the these sensors at advance auto, finally said forget and kicked out a lil more at the napa store. So do you think that this really the problem or is there a blockage further though the engine. I do use premium fuel 92 octane or better.
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Sunday, February 24th, 2008 AT 2:11 PM
Tiny
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Can you pm me if possible.
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Sunday, February 24th, 2008 AT 2:13 PM
Tiny
MASTERTECHTIM
  • MEMBER
Well the dpfe sensors go bad on all of these. It is easy enough to check for blockage by applying vacuum to the valve when its running, it should almost stall when you do that. Also there is a bulletin for this code coming back for incorrect hose position. Try swapping the hoses if you are not sure.
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Sunday, February 24th, 2008 AT 2:14 PM
Tiny
READY2GOWWFONMECHANIC
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To apply vacuum pressure what do I need to do I have already kicked out nearly 400 bucks messing with this im about to go crazy. I am a single mom and cant afford to keep going to these mechanics so alot of times if the work is simple and not too too dirty I do it myself.
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Sunday, February 24th, 2008 AT 2:16 PM
Tiny
MASTERTECHTIM
  • MEMBER
If you do not have a vacuum pump(you probably dont) all you have to do is get a long piece of vacuum hose and unplug a vacuum line somewhere on engine that has vacuum at idle. Then connect your piece of vacuum line from there to the valve while its running, if the egr valve is working correctly then the car should stall or atleast run really rough.
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Sunday, February 24th, 2008 AT 2:20 PM
Tiny
READY2GOWWFONMECHANIC
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Thanks so much I think I can handle that, but if it doesnt stall, that means the valve is not working or thier is a clog somewhere else?
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Sunday, February 24th, 2008 AT 2:33 PM
Tiny
MASTERTECHTIM
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Exactly
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Sunday, February 24th, 2008 AT 2:48 PM
Tiny
READY2GOWWFONMECHANIC
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Hi did what what you said with vacuum lines car started to idle kinda rough. So there isnt a clog possibly. So what next?
Thanks again for shedding some light.
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Sunday, February 24th, 2008 AT 3:33 PM
Tiny
MASTERTECHTIM
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Reverse the vacuum lines on the dpfe and clear the code and see if it comes back. It should have run noticably rough, did it?
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Sunday, February 24th, 2008 AT 3:36 PM
Tiny
READY2GOWWFONMECHANIC
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Yes it did. Will do.
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Sunday, February 24th, 2008 AT 3:40 PM
Tiny
READY2GOWWFONMECHANIC
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Yes it did. Will do.[/Quote:f20129ab0c]

hey its me again. After switching the wires the other day drove around 20 miles and guess what the lights back and its got the same code. Why why why?
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Tuesday, February 26th, 2008 AT 11:08 AM
Tiny
READY2GOWWFONMECHANIC
  • MEMBER
Yes it did. Will do.[/Quote:743fdc7039]

hey its me again. After switching the wires the other day drove around 20 miles and guess what the lights back and its got the same code. Why why why?[/Quote:743fdc7039]

sorry meant hoses not wires. Lol
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Tuesday, February 26th, 2008 AT 11:10 AM
Tiny
MASTERTECHTIM
  • MEMBER
Well unfortunately we are at the point where we need to connect scan tool and look at voltages then trace wiring and there is not much more we can do here. Sorry
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Tuesday, February 26th, 2008 AT 3:46 PM
Tiny
READY2GOWWFONMECHANIC
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Wow, well I appreciate all your advice you guys are great. Thanks
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Saturday, March 1st, 2008 AT 1:19 AM

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