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EGR Inspection and Cleaning


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#1
rds

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How do you properly remove check and clean the EGR. I did a search but couldnt find any info. (search wont accept 3 letters)

#2
blackshine007

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Cleaning it is quite simple, providing that you have the right tools. It's best you use some compressed air, some TB cleaner and some safety goggles. First off, you want to take off the thottle body by removing the 4 bolts that hold it down and disconnect the various cables, connectors and hoses that hold it down.

(you don't have to remove the intake manifold from the car, this is for illustration purposes only)
Posted Image

Now disconnect the the EGR hose and the EGR position sensor connector wire. Before removing the unit, make sure that you do a vaccum check to assure that it's holding a vaccum('98 and newer models don't have to worry about that, being that it's electronicly controlled) Once that's done, unbolt the two 10mm bolts that hold it down and don't worry about replacing the gasket, it's metal and is reusable for life.

Posted Image

With the EGR off and in your hands, very slowly spray some TB cleaner into the EGR valve with the holes pointing up and let it sit like that for the time being while you are doing other work (I'll get to that in a second). Letting the throttle body cleaner sit and soak will break up any carbon that might have built up within the valve and cause it to slightly stick open and cause the eratic idling.

Now, back under the hood. Sometimes, the EGR passages get caked up with carbon, especially the V6 models and especially the Millenia 2.5L engine. Take your TB cleaner and spray into the hole on the IM. Spray until you see something coming out of the EGR passage where it bolts up at. The TB cleaner should be soaking within the carbon deposits and loosening it up.

Now that you have sprayed passage down, take an air chuck and blow into that passage within the IM and hold your hand over the plenum hole so it don't blow back on you. If there's pressure, it's clogged pretty bad. But if now, you'll hear it come out of the EGR passage.

When the hole is unclogged, put everything back together (make sure you empty out the TB cleaner from the EGR valve and reinstall it) and disconnect the battery negative and hold down on the brake for about 10 to 15 seconds to reset the computer (if you have a factory radio, make sure you have the code ready before doing). Now crank it up and you should be ready to go.


Good luck B)

#3
jpit

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Nice write-up!

#4
Mx400ex72

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whats the EGR?

#5
snailman153624

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whats the EGR?

Exhaust Gas Recirculation - It cycles part of your exhaust back into the intake to reduce emissions.
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#6
jason

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do you know if the throttle body gasket is reuseable as well? :huh:

#7
shaundarbie

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I guess you *could* reuse it if it's still in good shape, but it can't be more than a few bucks--definately worth replacing while you're at it. B)

#8
hman

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Anyone have any pictures? Just so i know exactly what i am removing? Thanks.

#9
renatonetmail

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Ok.. here are some pics (check the links next to --> )

EGR below the throtle --> http://www.timbacuba...ine/engine9.jpg
EGR Close UP (throttle above) --> http://www.timbacuba...ne/engine10.jpg

#10
kizznipp

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is that blood on the black hose in the 2nd pic? :ohmy:

#11
snailman153624

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is that blood on the black hose in the 2nd pic? :ohmy:

"I love it...when...the...red water....flows.." :lol:

I'm sure the pics helped out, but damn put a bandaid on before you start snappin' pics!

#12
renatonetmail

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its blood...yes my blood...i cut myself trying to clean the THICK AS HELL coat of dirt on the throttle body as well as the plate (what cuts me) with carb cleaner and q-tips..it burned as hell cuz of the carb-cleaner... :angry:

ohh well.... :lol:

#13
newbie 97

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how likely is it that the egr solonoid is the culprit and how can this be tested!?

#14
mazdajim

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I don't understand the reference to the factory radio and having the code ready. Could you explain.
See below.

Thanks


Quote: "When the hole is unclogged, put everything back together (make sure you empty out the TB cleaner from the EGR valve and reinstall it) and disconnect the battery negative and hold down on the brake for about 10 to 15 seconds to reset the computer (if you have a factory radio, make sure you have the code ready before doing). Now crank it up and you should be ready to go."

#15
jpit

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Some radios required a code to be entered after disconnecting and reconnecting of the battery.




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