Emissions Failure ( OUCH )

[lustylocks]

Well the time has come for my baby to get the Emission Test, and she failed..
Converter and Injector Flush needed!

Mega Bucks!

Anyone out there that has a clue about the 02 Censor and changing it ...drop me a line...Not paying the mechanics for that! LOL

All the Best...Lusty

[Prospeeder]

o2 sensor is easy, unplug it, and unscrew it. You may wanna get an O2 sensor socket, they have a cutout for the cord to go through

[dandragonrage]

Run Seafoam through the brake booster line (going into the plenum) before changing the cat (are you sure you need to change the cat?), and if you want to change the O2 sensor, just follow each exhaust manifold down 'til you find it sticking out. You'll need to unplug the connector and use a deep socket to get it out. They have sockets specifically for oxygen sensors that have a slit in the side for the wires. When you put a new sensor in, start threading it by hand and not the socket so you don't crossthread anything.

Edit: ah, took me a while to type that, I got beat to the punch :D

[MantaGreen97]

keep in mind that O2 sensors don't usually fail "on their own"... It is possible, but more often is the case that something has killed the O2 sensor. Replacing it without addressing potential causes of the sensor failure may just have you looking at replacing it again, shortly down the road. I.e. it may only be a short term fix.

[levey]

Drive to NovaScotia. Have it inspected here. No emissions test.

Just a thought.:lol:

[goredsox]

when we move to TX im prolly gonna fail too, the smell of the fumes is terrible, that usually means bad cat. At cat costs a couple hundred plus install.

The o2 Sensor- if you look in the middle of the engine bay at the back, look down and you will see the exhaust manifold, the o2 is sittin right there on top.

[4kQuad]

How long did you warm it up before you got there. The cat needs to get hot a freeway speeds before it works right. I had my old Quad4 completely rebuilt, then had to go get emmissions done.
I drove straight to the testing place, and failed.

I change out the plugs, but the motor ran the same. So I fired it up and ran up the freeway for 15 minutes, then returned 15 minutes back and went to the testing place. Passed Big time. One reading went down by over 100 points.

it even says on the emmissions slip ( at least here ) that the motor should be ran for at least 15 minutes on the freeway before stoping to get it tested.

So, if you didn't drive it long before you got to the testing place. Fire it up...take a ride...get it hot... then go pass.

I think my thread about it and the reading change may still be in the Quad4 section.

[dandragonrage]

I never do that and I always pass...

[Matt95GT]

Originally posted by Prospeeder
You may wanna get an O2 sensor socket, they have a cutout for the cord to go through

I'll second that. I had to purchase one to remove mine. Otherwise, once the car is on ramps/jacks and is cool, it's a 5 minute process.

Originally posted by MantaGreen97
keep in mind that O2 sensors don't usually fail "on their own"...

They can. Some fuel additives/contaminants will slowly kill them. Leaded fuel will quickly kill them. If they get all clogged up with soot and read slightly leaner than the actual A/F mix, the PCM can richen the mix enough to fail emmissions. On an old vehicle, it can certainly happen.

[MantaGreen97]

Originally posted by Matt95GT
They can. Some fuel additives/contaminants will slowly kill them. Leaded fuel will quickly kill them. If they get all clogged up with soot and read slightly leaner than the actual A/F mix, the PCM can richen the mix enough to fail emmissions. On an old vehicle, it can certainly happen.

LOL. You just said exactly what I said in different words--you gave reasons why the O2 can fail because something causes it to fail, not on it's own. Which is exactly what I was saying :lol:

With fuel additives and contaminants over a very long time period I can see what you're saying because you'd never know that it's happening and the solution is just to replace the O2 and you're set again for a decade or so, lol. Still even in that example, the O2 is still not dying on it's own, it's fuel contaminants doing it over time.

I also did say "not usually" as well. It is certainly possible that an 02 can just fail, particularly on an older vehicle as you said, but IMO it's more probable that something else caused it to fail.

[Matt95GT]

Originally posted by MantaGreen97
LOL. You just said exactly what I said in different words--you gave reasons why the O2 can fail because something causes it to fail, not on it's own. Which is exactly what I was saying :lol:
...
Still even in that example, the O2 is still not dying on it's own, it's fuel contaminants doing it over time.


Your previous post implies that O2 sensors do not age. You also said...

Originally posted by MantaGreen97
Replacing it without addressing potential causes of the sensor failure may just have you looking at replacing it again, shortly down the road. I.e. it may only be a short term fix.

...which I disagree with. If the sensor is old/beyond it's life of usefulness and is replaced on an otherwise healthy car, there's no reason to suspect it will die again shortly.

[MantaGreen97]

Originally posted by Matt95GT
Your previous post implies that O2 sensors do not age.

I would never imply that anything in the world, or in the universe doesn't age. That would be ridiculous.

As every single instant in time passes--time which is always there counting away, never stopping--everything ages with it. For something not to age, time would have to stop. Again, that's simply ridiculous...

There's no way I ever implied that anything doesn't age.