This showed up on my '01 Marquis today, says insufficient flow. Does this usually indicate EGR valve failure, or somethng else? Thanks!
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the egr channels in the intake get plugged up with carbon
1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
2006 Lincoln Town Car Signature. Stock for now
1989 Ford F-250 4x4 much much more to come, sefi converted so far.
1986 Toyota pickup with LSC wheels and 225/60/16 tires.
2008 Hyundai Elantra future Revcon toad
1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)
please be patient, rebuilding an empire!
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Thanks! I've seen that on other kinds of cars, but didn't know it it happened on these too. I'll clean it out and see what happens.Comment
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New cars (96 and up) have an external EGR, so I doubt the passages are clogged.
If you are getting a PO0401 code, most likely the DPFE sensor has failed. there was a TSB about the problem and later Ford offered extended coverage on this part and only on certian models with certian sensors. pretty sure the extended coverage is expired by time now.
anyway, you will want to replace the DPFE sensor to eliminate the code.2003 Town Car Signature - 3.27 RAR, Dual exhaust and J-mod - SOLD 9/2011
89 Crown Victoria LX HPP -- SOLD 9/2010
88 Grand Marquis LS - The Original -- Totaled 5/2006
I rebuild AOD/AODE/4R70W/4R75E transmissions....Check out my Facebook page: https://www.facebook.com/pages/North...48414635312478Comment
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I pulled the valve and it and the tube are clear. The valve pintle moves when vacuum is applied. What is the DPFE sensor and where is it located? Thanks!Comment
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I did some reeaqsearch and found out what it is and how it works, but I'll be damned if I can see where its located under the hood. It looks like a flat module with two vac ports and an elec connector, according ot the Autozone website. I see some sort of solenoid near the egr valve that is attached to it with vac lines, but can't see this dpfe valve. I've had no luck in finding a component locator online that was specific to the 4.6 engine. Any ideas?Comment
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Found it and replaced it! We'll see what happens. Its at the right rear of the intake and the two vac lines come up vertically from the bellhousing area. They were bigger than I thought they'd be, and covered with some other stuff. Thanks for the good advice, as usual!Comment
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