4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

check engine light 443 egr

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Old 08-15-2004, 02:38 PM
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tarpymac
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Default check engine light 443 egr

what could this be?
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Old 08-15-2004, 02:48 PM
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jdaniel
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Default RE: check engine light 443 egr

The EGR is the exhaust gas recirculation system. It reduces oxides of nitrogen emmisions. It should be close to the throttle body. There is a Vacume back pressure transducer that has a back pressure line that goes into the EGR valve itself. The code could be one or all of three things for the most part.

A: Electronis vacume regulating solenoid valve

B:Vacume back pressure transducer

C:The EGR valve itself.

Some cars have a position sensor but Im not sure if the stang has one or not.
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Old 08-16-2004, 03:31 PM
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Stanley
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Default RE: check engine light 443 egr

You should be able to test it if you have a vacuum pump. Just hook it up to where the vacuum line is on the egr valve while the car is idleing and pump it up a bit. If the car acts like it wants to die then the valve itself is working.

What else does it say for that code? I remember some type of egr code that I used to get out of the Grandemarque and Town cars and we would take the throttle body off and clean out the egr ports. I have never heard of that problem on anything else though.
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Old 08-16-2004, 08:51 PM
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Default RE: check engine light 443 egr

hey stan it is "evaporative emission control system control valve"......?
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Old 08-16-2004, 10:23 PM
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Default RE: check engine light 443 egr

oh yeah this never started untill the super charger.i notice white smoke come out after i first fire it up. i called vortech and they said to change the factory plugs with denso iridium plugs i did.........13 bucks a pop :...(
i still get the code. i gapped the new plugs @ .032. they told me @ autozone to take off the egr valve and clean it with carb cleaner. i said where is the egr valve and the part time dude said...."i think that is that" anybody gotta a pic? please help. wanting to go the dyno friday. and then leave there to the track : )
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Old 08-17-2004, 07:36 PM
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Stanley
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Default RE: check engine light 443 egr

There should be two other parts to the system. The EGR control valve is the black one (I think) and there is another one that is a silver rectangle that has either one or two vacuum lines coming off of it depending on what year it is.

I would test the egr valve with a vacuum pump just to be sure. If it checks good I would replace the control valve. *

Disclaimer: I used to work at a Lincoln/Mercury Dealer and only worked on a Mustang a couple of times and I left the dealer in 2000. I hope what I have told you is accurate, but I can't guarantee anything. =]

I would suggest getting a Ford service manual for the future if you plan on keeping the car for awhile. They are very handy.

Good luck and hope I helped.
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Old 08-17-2004, 09:50 PM
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tarpymac
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Default RE: check engine light 443 egr

how would i test them? here is a pic.

[IMG]local://upfiles/6083/B381C9576A04414BAFF1F0A027F4291C.jpg[/IMG]
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Old 08-18-2004, 03:19 PM
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Stanley
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Default RE: check engine light 443 egr

The flat silver thing with the vacuum line going to it is the egr valve. Take that line off and connect a vacuum pump to it and pump it up a bit. If the car starts to die then the valve is working and it is either the sensor or the solinoid.

I don't know how to test the solinoid or the sensor, we would just replace them if the egr valve was working.

If your sensor is a silver rectangle with the two vacuum lines going to it you can take the lines off and see if the sensor is corroded underneath. I was told that if they are then it will go bad from the moisture being in there. If you have a ford service manual it might have directions on how to test them.
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