Get a 1 1/8" open end wrench from advance or autozone. Get
a cheap one. Cut the thing to the right length.. BTW, why
do you want to remove the EGR valve? It is seldom the
problem. That's a hell of a lot of work to get to the least
likely of your problems. The problem is almost always
either the DPFE sensor bad, a bad/plugged vacuum line or
plugged EGR ports under the throttle body. The EGR valve on
them is damn near never the problem and it is expensive.
I agree with Lugnut. Most often, if you're getting a bad EGR flow code, it
is the ports at the throttle body elbow to intake. They fill with crud and
goo. Not too awful to clean out - I've done it about 3 times now on my '95
Crown Vic. There are lots of places on the web showing how to do it. I
used to have a link for a good one - I'll dig for it.
You might share your experiences and symptoms - we may be able to save you a
lot of headache.
I appreciate the advice. I am asking on behalf of my father-n-law. He took
the car to Advanced Auto to get the code read. They told him it was EGR
related, but didn't give him the actual code. He is going to be going back
by the store and getting the exact code for me. Apparently the car does not
have any driveability or performance issues other than the light is on.
In the mean time, if you have any more specific advise on DPFE sensor,
bad/plugged vacuum line, or plugged EGR port under the throttle body, or if
you run across the web link showing how to clean out the ports as you
describe, please post it. Thanks so much.
One simple test that often works - find the vacuum port on the EGR valve and
attach a seperate line. Pull a vacuum on it while the engine is running.
If the ports are OK, the engine will begin to run rough and might even
stall. When I did this to mine, there was no change so I figured it was
clogged ports. If it does get rough or stalls, suspect the DPFE.
Here are two helpful pages.
This one is for cleaning the EGR passages:
This is for replacing the DPFE which measures the EGR function:
This is a useful site. There are a bunch of them on the web. I think I
found this after a tip here from Sharon Cooke... I can't find the link I
originally used but these are quite good.
Many thanks to Lugnut and PoD !!
My newly-acquired 93 Crown Vic has the same code, and the EGR is
non-responsive also. I was about to try to remove the EGR, and you
saved me from that fiasco !
Land O'Lakes Fred
Paul of Dayon wrote:
It doesn't hurt to get a new gasket before you start. I had to get mine
from the dealer but it might be available aftermarket, now. You need the
throttle body elbow to intake manifold gasket. It is a rigid and thick
metal type thing. You can get the throttle body to elbow gasket anywhere.
You should get both.
Remember to stuff a rag into the manifold before you start cleaning the
ports to keep chunks from falling inside. I used a shop vac and a
screwdriver to chip out the big stuff. Throttle body cleaner spray took
care of the rest with minimal scrubbing.
replying to Paul of Dayon, Kat wrote:
I have a 1997 Grand Marquis and I had six codes pop up but there's only 3 codes
that came up twice. P1401, P0301, P0125. I found a damaged spark plug wire which
I'm replacing. But I'm not sure what I need to do for the other codes P1401 and
P0125. I'm also going to flush my cooling system because I don't think it's ever
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