Ok, the EGR valve is messed up on my car and since it's killing my gas mileage and it's not really necessary anyway I want to take it off. How would I go about this? I don't just want to take it off and have the engine fluids going everywhere. I know you can order blockoff plates for V8 engines, but I can't find any for mine. Anybody know where I could get some?

 

You could probably make some yourself.

 

Would I just make some to go over the holes that lead to the valve? I would really like to just order some.

 

Can someone confirm it that all I have to do is cover the holes with a flat piece of metal? I don't want to screw up my engine to save some gas.

 

Yeah thats all you have to do, cut a blockoff plate to the same size and drill the two holes in it. You also need to get a sheet or cork and cut a gasket or you can use some high temp silcone. It wont hurt the engine to just block it off. Thats what the valve does most of the time since its closed, it blocks off the exhaust from recirculating. It only opens on cars from 89 up fromm off idle with a load (car not parked) I did this myself with my 85 2.8 firebird. I just blocked it off.... howeve you will get a code in your computer if you do not have the EGR there, so you will have to either just ignore the SES light or have it reprogramed to subtract the code.

 

so let me ask this.. putting that blockoff plate on what does that really help/hurt.. does it really make a difference???

 

I made some for a 3.4 once.
Just used the gaskets off the engine, traced them onto the metal, and then cut them out with a sawzall and trimmed it up a bit with a die grinder.

Drill your holes, silicone the gaskets back onto the plates, and you are good to go.

 

Can anyone answer this 1 ??? please

 

If you have EGR problems, then you can remove it to get rid of your EGR problems.

If your EGR is functioning fine and not throwing any codes, etc., you might as well leave it on, taking it off isn't going to gain anything.

It isn't really a "performance" mod, it is just something to get around the EGR. It will throw a code for the SES light, but you won't have to worry about a bad EGR valve. Just whatever you want to do really. No gains or losses.

If you need to, do it. If you don't, then don't.

 

Agreed, leave it alone if its not broken. If it is broken I would just replace it. Your car was ment to run with it one and your computer is programmed to have it working. Yes the EGR recycles burnt air/fuel back into the combustion chamber. So you don't have fresh unburnt air in it but it is only at certain times, throttle positions and load on the car that the computer activates it. The idea is to reburn a semi/burnt fuel mixture to reduce the CO (carbon monoxide) in turn it into CO2 (carbon dioxide) as well as some other pollutans for better emmisions. It also reduces the temperature in the combustion chamber to further reduce some pollutants like NO and HC's I believe. So it can reduce HP but unless you have some serious mods I would leave it alone, unless you have a problem with carbon build up in the intake. That is one of the drawbacks of an EGR system. Some of the older cars seem to build up carbon and it should be cleaned out or you choke off the air supply and can run into some drivability issues. I have had to clean out my 89 firebird and a 94 chevy diesel truck because of the EGR. (I left it on the 89 firebird because it wasnt worth removing but on the 94 truck I removed it and had a chip burnt for it) In the 85 firbird I only removed it when I took out the 2.8 and put in a 327 from a 65 vette and pull all the computer stuff. I dont know if they solve that clogging up issue on the newer models like the 95 and up cars. I have yet to pull it on my 96 camaro and take a look.

 

Thanks guys.. no biggie i was just wondering.. always good to know/learn.. mine works fine, like i said i was just wondering.... thanks 4 responding...

 

So having Carbon Build up is the cause of a bad RGR? I'm getting SES Light EGR valve Sylynoid 1,2 and 3. I belive this means its clogged. The tube from the intake to the valve can get clogged with carbon right?? And in turn that can make you get worse gas mileage. At least thats what the dealership told me. Can this also make your intake carbon up?? Restricting airflow and makeing the motor Pukey?

I had this same problem and SES light on a 94 I had in 99. Threw the EGR SES. Dealership said the Valve was ok it was just caroned up. Does this make sense??

If it doesnt thats ok, I,m new to the 3.4, I only do Carburated engines for the most part. I know NOTHING ABOUT THIS motor.

Oh and if it helps the car has 170,000 miles on it.

 

Have you considered trying to fix your current broken EGR valve?

They come apart easy. Inside are 3 magnetic solonoids that open or close 3 different sized appatures.

Take it all apart and clean it well. Use a metal brush and oil to scrub the dirt and corrosion off the walls of the solonoid bores. Take the solonoid plungers and clean them up to shine like new with a wire wheel mounted in a bench grinder. The gaskets will likely be reusable, if not get new ones.

Make sure all 3 solonoids slide easily in their bores. Use brake cleaner to rinse everything clean when done. Make sure no oil residue is on the parts because it will quickly burn into sludge and goop it up again.

If it still throws a SES light after cleaning, the problem is one of the 3 magnetic coils on the 3 solonoids. You'll need to get a new valve and start over because the coils are not sold individually. The majority of EGR related SES lights on the 3.4s are repairable by cleaning the valve. I've done it a couple times myself, it's easy and works.