EGR valve

Tiny
TONYPIC734
  • MEMBER
  • 2004 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 125,000 MILES
I need to replace the EGR valve on my car competition group (3.6L v6 Supercharged). Is that repair on a novice level with limited tools? If so, do you know about where my EGR valve is located? I know it is around the engine, but not sure where. Any assistance would be greatly appreciated.
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Wednesday, January 26th, 2011 AT 6:21 PM

43 Replies

Tiny
MMPRINCE4000
  • EXPERT
Hello,

The EGR valve is located at the rear of the engine here is a video to help you test it and the location of the valve in the diagrams below.

https://youtu.be/DqUCbbKdWf4

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Wednesday, January 26th, 2011 AT 6:28 PM
Tiny
WAYNEA
  • MEMBER
  • 2001 PONTIAC GRAND PRIX
I own a 2001 Pontiac Grand Prix GTP - Supercharged 3.8L with 155K miles. Trusty AutoZone seems to indicate my "Check Engine" light is a bad EGR Valve (Could just be clogged, or I might need a new one). I've scoured the internet, and cant find any pictures that show me where to look for the valve.

To be honest, I usually don't work on cars myself, but have decided to 'take the plunge' and try this myself.

Please let me know where to look for the valve, and if you can point me to a picture somewhere that would be great.

I spent $30 on an online repair manual that was useless to me.

Thanks for your help!
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Saturday, January 19th, 2019 AT 7:07 PM (Merged)
Tiny
JACK42
  • MEMBER
Top right rear of engine near the throttle body. Assuming that it is vin code 1. Check the 8th digit if the vin #
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Saturday, January 19th, 2019 AT 7:07 PM (Merged)
Tiny
MOESKY
  • MEMBER
  • 2005 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 85,000 MILES
I was told that my egr valve needs replacing. Where is it located and cna I replace it?
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Saturday, January 19th, 2019 AT 7:07 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
EXHAUST GAS RECIRCULATION (EGR) VALVE REPLACEMENT

REMOVAL PROCEDURE


http://www.2carpros.com/forum/automotive_pictures/12900_egr_8.jpg


1.Disconnect the exhaust gas recirculation (EGR) valve electrical connector.
2.Remove the EGR valve nuts (1).
3.Remove the EGR valve (2).
4.Remove the gasket (3) from the EGR valve adapter.
5.Clean the EGR valve gasket mating surfaces.

INSTALLATION PROCEDURE
1.Install a new EGR valve gasket (3).
2.Install the EGR valve (2).
3.Install the EGR valve nuts (1). NOTE: Refer to Fastener Notice in Service Precautions. Tighten the nuts to 25 N.m (18 lb ft) .
4.Connect the EGR valve electrical connector.
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Saturday, January 19th, 2019 AT 7:07 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Egr valve is at top right rear of engine near the throttle body
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Saturday, January 19th, 2019 AT 7:07 PM (Merged)
Tiny
DTVMIKE1652
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
How do I replace/clean the EGR valve and where is the location of this valve?
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Saturday, January 19th, 2019 AT 7:07 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
The EGR valve is on the top right rear of the engine, near the throttle body.

Unplug the vacuum hose or electrical connector from the top of the valve, depending on your particular model.

Unscrew and remove the two mounting valve-to-engine bolts using a wrench or ratchet and socket.

Disconnect the pipe from the bottom of the EGR valve using a wrench or adjustable wrench, being careful not to damage the connecting nut.

Lift the valve away from the engine compartment and remove the gasket.

Detach the EGR solenoid from the top of the valve, if your particular model comes equipped with one. Remove the four screws using a Phillips screwdriver.

Clean the EGR Valve

Remove carbon deposits from the bottom passage on the valve using a scratch awl.

Remove carbon deposits from the pipe and engine valve passages using the scratch awl.

Remove any gasket material from the bottom of the valve and engine-mounting base using a plastic scraper to avoid damage to the mating surfaces.

Install the EGR Valve

Attach the EGR solenoid to the top of the valve, if your particular model comes equipped with one.

Set the valve in place on the engine, along with a new gasket if necessary.

Start the two mounting valve-to-engine bolts by hand to avoid thread damage.

Start the pipe-to-valve nut by hand to avoid thread damage.

Tighten the two mounting bolts and the pipe nut.

Plug the vacuum hose or the valve sensor electrical connector.
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
SILVER10
  • MEMBER
  • 1995 PONTIAC GRAND PRIX
Recently I had the head gasket replaced and the egr valve the first one started to meld and there was whistling when you stepped on the gas, had a second one put on it is also starting to meld and still whistling. Can anyone help with this?
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Sounds like its clogged-up -try cleaning out the ports thoroughly and see what happens
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
SILVER10
  • MEMBER
I guess just a dumb question but where are they located
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Just to add to ras, have the cat converter checked. If it is blocked, it will send all exhaust to the egr port overheating it. It would also explain the whistling.

Roy
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
SILVER10
  • MEMBER
That sounds like what it is had it disconnected and no more whistling and runs a lot better
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Good luck

Roy
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
NATHAN_BUCHANAN
  • MEMBER
  • 2001 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 160,000 MILES
My engine is the non-supercharged 3.8L. I just replaced my upper intake manifold due to warping that caused a coolant leak. This included removing the fuel rail and cleaning most of the top side of the engine. After putting everything back together I discover that it seems like my engine is starving for air in the vacuum lines. When I remove my oil cap there is a ton of suction through the valve cover. From my experience this has something to do with the EGR valve being plugged or not working. Could you give me heads up on how this might have happened while I was replacing my upperintake? Is it possible that I could have spilled coolant into the EGR valve tube?
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
MMPRINCE4000
  • EXPERT
If you used ANY RTV sealant on the intake manifold gasket you may have clogged up some vacuum lines in the intake manifold.
The intake gasket should be put on dry after cleaning surfaces.

In any case I think you will have to remove the intake, clean it and replace the gasket.

I have seen some mechanics drill a small hole in the oil cap tube, but I would not.

EGR should not flow at idle, if it flowed it would cause engine to die.
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
SILVER10
  • MEMBER
Guess got a little to excited. Any other ideas. Took off cat and just ran straight pipe before pouring more money in, but still whistling.
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
NATHAN_BUCHANAN
  • MEMBER
The gasket for the intake is a plastic piece that has a rubber insert so I did not use any extra sealant. I suspect you are right that I will have to take it off again which sucks but it will go twice as fast this time around. Would it be possible to get a bit more explanation as to how the vacuum system works and what it should be doing? It seems to me like something is plugged up somewhere.
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
MMPRINCE4000
  • EXPERT
The MAP sensor gets vacuum from small lines in intake manifold for example.

Something has clogged a line somewhere, old gasket pieces etc.

I have seen this same symptom, where there is a LARGE sucking sound when you remove the oil cap.
But this guy coated both sides of the gasket with RTV. In this case the intake manifold had to be replaced, because the RTV had clogged up the passages so bad I could not get it out.

I would remove the manifold and blow out ALL the passages with compressed air. Make sure feel the air come out the other end.
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)
Tiny
NATHAN_BUCHANAN
  • MEMBER
Not to step on your toes but I am sure glad I didn't take that whole upper intake off again. I was missing the bottom o-ring on the PCV valve. The new UIM came with the top o-ring for the PCV valve but not the lower o-ring. I didn't think to check it. Thank goodness its easy to get to. So for anyone who may have come across this issue by searching for it, Check your o-rings on your PCV Valve.
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Saturday, January 19th, 2019 AT 7:08 PM (Merged)

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