EGR Valve Problem 1997 Ford Expedition

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expeditionkiddo - 19 Oct 2005 20:36 GMT

Hello everyone I have a question I have a 97 Ford Expedition and the
check engine light came on so I went to my local Auto Zone to get the
free check on it, and it came back "EGR Valve Insufficent Flow", so
then I take it to my local mechanic just to get a 2nd opinion and yup
his computer tell him the same thing "EGR Valve Insufficent Flow"
so he tells me the best thing to do is just buy a new 1 cause they are
cheap or try and clean it so I bought a new 1 and he told me once I
put the new one on take off your battery connections for about 30-45
mins so you computer in the car can reset it self and I did that. Then
it came back on so I went back to my mechanic and he tested it said
the same thing "EGR Valve Insufficent Flow" does anyone know why
its still saying that even though it has a BRAND NEW EGR Valve in
there? what can I do to clear it up could it be the fuel lines are
clogged or something like that PLEEEEASE HEEEEELP ME lol thanks
everyone

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partaks@chartermi.net - 20 Oct 2005 02:22 GMT

Check your EGR differential pressure switch. It is a metal box which
has two vaccum line and a wire harness attached to it. Have the boys
at autozone pull one out of a box to show you what it looks like.
Autozone even had a test procedure to verify that the EGR DPS on mine
was bad (With the part removed from the vehicle). If it's not this,
then it's either the ports in your manifold (that the EGR valve
attaches to) that are plugged, or the EGR tube that connects to the
exhaust manifold has an orifice in it that may be plugged. My bet is
on the bad pressure switch though. Good luck.

> Hello everyone I have a question I have a 97 Ford Expedition and the
> check engine light came on so I went to my local Auto Zone to get the
[quoted text clipped - 17 lines]
> Topic URL: http://www.autoforumz.com/EGR-Valve-Problem-1997-Expedition-ftopict142901.html
> Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.autoforumz.com/eform.php?p=690125

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partaks@chartermi.net - 20 Oct 2005 02:22 GMT

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Steve H - 20 Oct 2005 06:07 GMT

Very seldom does the EGR valve itself fail, usually it's plugged ports or a
system that cant read correctly. On a ford 99% chance it's the DPFE sensor.
High fail item.

Signature

Stephen W. Hansen
ASE Certified Master Automobile Technician
ASE Undercar Specialist

http://www.troublecodes.net/technical/

> Hello everyone I have a question I have a 97 Ford Expedition and the
> check engine light came on so I went to my local Auto Zone to get the
[quoted text clipped - 11 lines]
> clogged or something like that PLEEEEASE HEEEEELP ME lol thanks
> everyone

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lugnut - 20 Oct 2005 14:54 GMT

>Hello everyone I have a question I have a 97 Ford Expedition and the
>check engine light came on so I went to my local Auto Zone to get the
[quoted text clipped - 11 lines]
>clogged or something like that PLEEEEASE HEEEEELP ME lol thanks
>everyone

Your fault is usually caused by a bad DPFE sensor or plugged
EGR ports in the intake. The most common is a faulty DPFE.
The EGR valve is seldom a problem. BTW, the DPFE is
"cheaper" than an EGR valve in most cases.

Lugnut

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