FINDING AND CLEANING EGR VALVE ON 1998 MERCURY SABLE.

  • Tiny
  • lackeyr
  • 1998 Mercury Station Wagon
  • 6 CYL
  • FWD
  • automatic

Confirmed that this is why engine light is on. I'd like to clean it out.

Monday, November 29th, 2010 AT 8:54 PM

14 Answers

  • Tiny
  • Wrenchtech
  • Expert
  • 19,541 posts

What I the exact code number being set?

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Monday, November 29th, 2010 AT 9:03 PM
  • Tiny
  • lackeyr
  • Member

Don't have the receipt in front of me, but it was low flow EGR, I think P0401

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Monday, November 29th, 2010 AT 11:12 PM
  • Tiny
  • Wrenchtech
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  • 19,541 posts

That's not a dirty EGR valve. That's either a bad DPFE or a plugged EGR passage through the intake.

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Monday, November 29th, 2010 AT 11:16 PM
  • Tiny
  • lackeyr
  • Member

Thanks. So I could clean it out and/or replace the DPFE? How to clean it? I think I know where the EGR is located - driver's side back of engine, right on top like a mushroom. Not sure where the DPFE is.

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Monday, November 29th, 2010 AT 11:22 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 19,541 posts

Differential Pressure Feedback EGR sensor also called a pressure transducer. They fail by the hundreds.

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Monday, November 29th, 2010 AT 11:24 PM
  • Tiny
  • lackeyr
  • Member

Ok, so what do I do next?

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Monday, November 29th, 2010 AT 11:26 PM
  • Tiny
  • Wrenchtech
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  • 19,541 posts

Well, if you don't want to get it diagnosed properly, I'd try a new DPFE

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Monday, November 29th, 2010 AT 11:38 PM
  • Tiny
  • lackeyr
  • Member

What about the cleaning? I've seen responses suggesting wire insertions and chemical breakdowns (B-12). I'd like to do this myself because it seems so simple, as is buying a new DPFE. I think I should do both, no?

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Tuesday, November 30th, 2010 AT 12:09 AM
  • Tiny
  • lackeyr
  • Member

BTW, I've gotten the same response before - replace the DPFE. This just doesn't seem to fix the problem. If there's carbon buildup, then I think it should be cleaned out. How to do this is the question. With a clothes hanger or with B-12 or something like it. Hey, I don't know what I'm doing, and that's why I'm here. There's mention of gasket replacements, throttle body cleanouts, hose replacements, etc. I'd just like a straight answer.

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Tuesday, November 30th, 2010 AT 12:21 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 19,541 posts

I've given you one. It's your choice if you want to listen.

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Tuesday, November 30th, 2010 AT 12:23 AM

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