Can someone point me in the direction of the EGR?

Hey everyone. I just wanted to know if someone could tell me where the EGR valve is. I just replaced my PCV valve ($7.50) for good measure and it got me thinking about cleaning or replacing the EGR valve. A discription or pic would be great.

NO 4 EVR wrote:

Hey everyone. I just wanted to know if someone could tell me where the EGR valve is. I just replaced my PCV valve ($7.50) for good measure and it got me thinking about cleaning or replacing the EGR valve. A discription or pic would be great.

at over $100 bucks, I wouldnt replace it unless necessary.

its on the driver side of the engine bay, upper rear corder. It kinda hangs over the back valve cover on the drivers side. Black circular box, with two pipes coming out the bottom, one going into the exhaust manifold (rear one) and one into the intake (below the supercharger)

not at home and car is there so I cant take a pic. there is an electrical plug harness on top of it, that you can unplug to disconnect the EGR.

I searched the RegalGS archives for info on disconnecting the EGR but all records were incomplete.

So can I get a final word on dissconnection of the EGR? I know a code will probably be thrown, but are the gains better than the losses?

I was under the impression that the EGR did some negative things but the good things it does outweighs those. I also hear that the EGR is not at all needed but it is rather for environmental concerns like the catalytic converter. It releases NOx

I would not replace your EGR unless it breaks. If your breaks you will get a code. If yours breaks I'll sell you a used one for 20 bucks.

EGR disable - Long story short: During engine warm up, you will get slightly lower gas milage and release slightly elevated emissions.

If this concerns you, dont disable. Even if your state does exhaust sniffer testing you should still pass with a disabled EGR. You typically dont get your car tested when it is not warmed up.


You cant just unplug it, or you will get a code. The easiest way to "disable" but not remove your EGR: Fabricate a small plate that fits between the EGR valve and the small manifold it sits on. Your PCM trips the valve all it wants to, but the plate blocks the exhaust gas from circulating through your engine. The plate can be made from .020 thick metal cut out with tin snips. Looks stock.

Here is the EGR valve, the plate goes between this and what it sits on:
http://cgi.ebay.com/ebaymotors/Grand-Prix-Regal-Series-III-3-8-3800-EGR-Valve-Low-Mile_W0QQcmdZViewItemQQcategoryZ33607QQihZ013QQitemZ230064944256QQrdZ1QQsspagenameZWD1V

If you want to remove your EGR entirely, you will have to edit your PCM. Then you have to plug the feed hole in the exhause manifold. Then you have to plug the hole entering the side of the intake manifold. All kind of a pain unless you are tearing down your engine for some other reason.

The gains of disabling your EGR are minimal.

I don't think mine is broken, I was just thinking "what the heck, why not?" I was just thinking maybe a cleaning or disable it and see if my idle smooths out a little.

When people talk of cleaning it what exactly do they clean?

BTW thanks for all the info urb.

sometimes carbon deposits..and or chunks clog it...big problem with the 4.3 v6s.......

Have you tried cleaning your MAF sensor? A glazed over MAF can cause a rough idle.

I could be wrong but I think the EGR will set a code if it isnt closing or opening. You dont hear about this problem much on these cars.

My MAF is new so I don't think it would be that. Its not a really rough idle. I would just like to smooth it out a little

When my EGR was bad, I had problems with it running hot. The exhaust manifolds were so hot they would glow red!

That is quite hot!

I really just want to check it out. Maybe clean it and stuff. Maybe block it off, dunno

jax95riv wrote:

When my EGR was bad, I had problems with it running hot. The exhaust manifolds were so hot they would glow red!

I would guess that your EGR got stuck open. Which means you were dumping hot exhaust into the engine.

The gasket on the EGR is metal and re-usable. (at least on the two I have) You could remove the bolts and clean the valve with carb cleaner..if you really wanted to do some preventitive maint.

NO 4 EVR wrote:

That is quite hot!

I really just want to check it out. Maybe clean it and stuff. Maybe block it off, dunno

i just disabled mine because 1. I have a PT to remove the codes 2. im gonna block it off anyways with the zzp block off plates when I install headers.

it does take the car a while to warm up without it, unless Im idling at alot of lights. The only problem I had, was I jumped on the highway once without warming up enough (i live literally a block from the highway) and the TC wouldnt lockup until the car warmed up more.

The gas mileage did get worse, i think. Hard to tell since Ive only been driving it rarely and towing my skis to the lake half the time (which kills mileage too).

the only real advantage is reducing heat buildup in the engine, but it will warm up to normal running temp eventually. i like to keep the engine and tranny as cool as possible, especially when towing or racing

Anyone have any pics of the area? That would be greatly appreciated. Thanks

Series I pic

On the Series II it is on the back side of the engine, near the exhaust xover pipe and tranny fill tube. You can see the extra exhaust tube coming out of the manifold leading to the EGR.

Gotcha. Thanks guys.

Hey, sorry I'm gonna dig up and old topic. But the riv just recently threw a code about the EGR, something about a pintor position so I'm just going to buy the block off plate from zzp

However which option should I get?

1. Exhaust only
2. Add intake blockoff plate
3. Intake blockoff only (guessing not this one)

you could probalby just clean it and it will be fine, but i'm guessing you're using this as an excuse to make 2 more hp :lol:

i think you can get away with just the exhaust side block off plate.

Do you have a tuner to remove the code? Blocking it anywhere or unplugging it will not remove or clear the code.

I know this. The code came once and I cleared it with my scanguage II. It hasn't come back since.