qytum

90 firebird 3.1


it has the electronic egr with 3 screws holding it down. does anyone know where i can get that metal gasket that goes between the pipe from exhaust manifold to the egr itselft??

It is like a 1/2 inch plate that screws into the exhaust and from there the egr screws into the plate.

I will attach a diagram to help understand the problem.

I need to know what the part is called and where to get it.

Denis.V

The only name possible is: "EGR valve gasket". I bought one at www.partsamerica.com. You can check specific parts with pictures for your vehicle, knows the manufacturers, part numbers, price, etc..


Regards,

Denis V.

TomP

Are you sure your "big metal gasket" isn't just a flange? (Replacement done by welding)? Might as well grab the whole EGR riser pipe from a junkyard car...

qytum

nope not the gasket . Thats what i originally thought it was. No junkyards have it because they were only on the 90-92's. Wonder if machine shop can make one.

FAST RS

I could not find one for my 3.1 I broght the gasket into the dealer they insisted that it was not from my car. I then had them pull a egr for my car and showed them where the gasket went. They do not sell it nor does anyone. Only way to do it is to buy a whole new EGR for 200+ dollars. I just used hitemp gasket sealer around the edges and that will hold for about 6 months then you will have to do it again. But it will not leak as bad.

FAST RS

BTW all 3.1 engines had the same EGR my moms oldsmobile was a 92 had the same egr as my camaro so does a grand prix bretta or what ever they ar basicly any 3.1 GM engine will have it even if it is a FWD car its the same jsut in a different location. They are right by the throtlebody on FWD cars near the firewall. and you are talking about the gasket with the 3 holes right?

Denis.V

Yes, yes, yes, it seems that the "big metal gasket" is not a gasket. It's only a special metal piece designed for a specific EGR type aplication. Solution?: I think a cheaper machine shop or a junkyard or search in e-bay ...


Denis V.

TomP

You could always go to a "real" parts store (not pep boys or autozone) and see if FelPro makes a gasket. I'd imagine the gasket to be pretty damned universal; I doubt GM specially made an EGR valve for our v6's.

BitchinRS

no body sells. I've checked at real parts stores and 3 dealers. Buy some felpro high temp gasket material and make your own. I did this and have no problems for 2 year, and I drive 100 miles a day. So it gets a work out.

TomP

Okay; fine; I'll do a search.

Results:

2.8:

Fel-Pro #70954. "EGR Mounting Gasket"
[edit] Also: Standard #VG8

3.1:

Fel-Pro # 70397. "EGR Mounting Gasket"
Fel-Pro # 70208. "EGR Mounting Gasket adapter" ?
AC Delco #219-323: "EGR Valve Gasket"
Borg-Warner #EVG27 or EVG30, "EGR Valve Gasket"

5.7 TPI:

AC Delco #10077547 (92 and 88)
Fel Pro #70978 (1992)
Fel Pro #70954 (1988)
[edit] Also: Standard #VG8

As far as the 2.8 goes, since both it and the '88 V8 share 70954, that means we can assume that AC Delco #10077547 works for the 2.8 as well. gmpartsdirect.com charges 52 cents for it. If someone wants to do additional research and compare the 2.8 EGR mounting flange to the 3.1 EGR mounting flange, let us know if they match up.

Let me know how it goes.

[edit] Verified these numbers against a second catalog, so they must exist. Just because nobody sells, doesn't mean that nobody makes.

eric17422001

Tom,

It's NOT the mounting gasket we are talking about! We can get one of those anywhere.

The gasket in question is a metal, perforated, triangular shaped piece that fits bwtween the two halves of the EGR, which are held together by three torx head screws of about 4mm diameter. These break with heat, the flange isn't clamped evenly enymore and the gasket they claim does not exist burns through.

The gasket is part of the EGR valve, this is according to GM a "non serviceable item"

I have made my own gasket of thick hi temp paper and drilled out the broken screws, replaced them with 10-24 stainless screws.

So far it hasn't leaked, but every EGR I find in the junkyard has the same broken screws and burnt gasket. I am not paying two hundred bucks for one when I have no emissons check in my area.

Eric

Denis.V

What about using a blockoff plate for a definitive EGR supression?.

eric17422001

It will set an EGR code, but nothing else. My firend says he can re burn the PROM to make the code go away.

Eric

TomP

Eric, thanks for the clarification! I was still going by the picture that qytum had drawn.. didn't realize this was an "internal" gasket.

eric17422001

No prob Tom! The plange is probably the same as the 2.8, with two blolts holding in down.

When I saw the post I knew exactly what qyturn was talking about because the 3.1 EGR's all do this and are not the same as the 2.8's

NOW Tom I have $465 bucks worth of Eibach springs, Kyb's and poly bushings just sitting in my garage, come on down and install them for me please, I'm not motivated!

Eric

hgvtub

hi ,i have been reading your messages to each other with great intrest,as my wifes 1992 3.1 rs is having the same problem as yours.at the moment the throttle does not shut off for about 10 seconds after she has taken her foot off the pedal and we are only getting 10 miles to the gallon ....please help if possible
colin

BitchinRS

Check for Vaccum leaks. Specialy around the MAP sensor. I was having that exact same problem with the throttle. Turned out that the hard line vaccum tube going to the map was craked.

The map sensor helps the ECm determine how much load the engine is under. If you have a vaccum leak it will take a moment for it catch up.

Also being that it is a 1992 with a V^ I am asuming that it has 5 speed. If so make sure she is not depressing the clutch while letting of the gas. Doing so will causing the same symptom.

Will

elevario

Yes, defintely check for vacuum. Bitchin's got it though! Eric

hgvtub

thanks for the help you gave me with my problem of the delay in the engine revs dropping after the wife has taken her foot off the gas pedal.I could not find any leak in rigid plastic pipe as you and Bitchin rs suggested.we do have a leak on one of exhaust manifolds,two studs have been broken off on the same port,could this be effecting how it responds?

auxout

Saw whole used/working EGR's like that on ebay for around $30 when I was having the same damn problem. Some jackass overtorqued the screws and snapped 2, that internal gasket was gone. Finally wound up buying some mr gasket ultraseal steel core stuff been holding for a long time now. If that ever goes that piece of **** is getting welded. Good Luck!