Okay I have a 1993 Lexus LS and It keeps failing Emission's testing, So when I got to looking at the EGR pipe on a newer LS400 Model that goes from the top of the Eng to the bottom next to the firewall: And on mine there was no ERG pipe going go to the bottom of the Eng near the Transmission &
the Rear Main Seal: SO I have to ask where Does this pipe go if I wanted to replace it and why would someone seal it off?

 

Not sure... I just had my EGR system on my 1991 cleaned.

Not sure what happened awhile back but someone on here with a 1993 LS400 had a problem with the EGR tube (gas or something coming from it) and the engine went up in flames. May have had other issues leading to this though, so dont be too alarmed unless you smell gas.

Hopefully someone here will have more info on this.

 

Well Its been a year since I have had the car and never had any smell of gas but I need to pass the Emissions test

 

EGR pipe will not cause the car catch fire due to leaky fuel rail or w/e that guy was experiencing.

kelley, are u sure its not there? is there a blockoff plate there in place then? EGR basically recirculates exhaust into the intake to be combusted more cleanly...i think.

 

Yes Its sealed off, why would they do that?

 

improvement of power.

 

So you mean if I leave it sealed Off Ill have more power?, Then why would My Emissions be failing?

 

well think about it....Exhaust Gas Recirculation i mean if ur REburning exhaust gas, thats going to rob power. like i said before EGR helps the car become more efficient smog wise.

 

Okay so that's not making me fail?, Then what Do I look for?

 

well yes that probably is making it fail because the EGR makes the car more efficient..and since its deleted, your car is not that efficient. you may have other things linked to it though.

 

I own a 94 LS400 with 325k miles and had to replace my EGR tube/pipe last summer. The location of this pipe; looking from the front of the car, it is attached near the firewall on the center right side of the engine/egr and it winds down the the center right side behind the engine just above the transmission, then it crosses over the transmission to the left and goes down to attach just above the oxygen sensor coming off of the header pipes before the cat on the left side if you are looking from the front...if sitting in the car it connects just above the right hand cat and oxy sensor.

The dealer wanted approx. $900-$1,100 dollars to replace it because they said they had to drop the transmission to install it. I cant remember if I bought the egr pipe from Carson Toyota or got it aftermarket, but the part cost approx $135-$150. Then I took it to a repair shop, showed them where it was connected and asked them if they could replace it without removing the transmission. They were able to do it just by winding it up and through the small space (turning the pipe around as they wound it up to the top). They charged me 1 hr labor and so the whole deal only cost me about $225.

If you go to www.lexls.com and click on his turorial to remove the transmission, go to the 14th picture down and you will see a picture where he is removing the transmission and you can see the egr pipe just above and to the right hand side.

Hope this helps and I had to replace mine because it had a pinhole in it and it was as noisy as if I had lost a manifold gasket. Solved the noise and no problem passing emissions inspections.

 

O okay so you had failed emissions inspections?? and after you got it fixed it passed?

 

No, I had did not need emissions prior to the pipe getting a pinhole leak in it. I replaced the pipe because of the pinhole leak. I was responding to your question of where the pipe actually went and what it connected to.

I will also tell you, that the probable reason that someone just "blocked" yours off with a plate, is that they were most likely told by the dealer, that it would cost $1000-$1200 to replace. Thats also why I told you how much the pipe cost and that I did not have to have the transmission dropped, so it was much cheaper to replace.

I cant tell you if yours is not passing inspections because of it being blocked off with a plate. Sorry and Good Luck.

 

If in fact your EGR is bad then it will definitely cause your car to fail emissions testing. The EGR recirculates the spent exhaust gases back into the combustion chamber so that any unburnt fuel will then be burnt. If the EGR isn't recirculating the gasses than you will essentially have "dirtier" exhaust. Recirculating those gasses does rob power because it is sending dirty exhaust back into the combustion chamber. That dirty exhaust is much hotter than fresh air (= less power) and doesn't have as much oxygen as fresh air coming in (= less power). Hope this helps.

 

http://www.lexls.com/tutorials/emission/egrfilter.html
Maybe this helps maybe not.

or you can try this
http://www.engineperformancechip.com...uel-saver-p-17