California Emissions stuff [Archive] - Forum


View Full Version : California Emissions stuff

08-26-2005, 09:48 AM
Ok I have all this extra cali emissions crap on my engine. Not only is it ugly, I'm almost positive it has to be robbing power.
1) Is there a way to take all this **** off without any problems? or am I just **** out of luck
2) Would that be illegal in anyway? (I live in ohio)

08-29-2005, 10:29 AM
I guess first of all does anyone have any information on this stuff I should ask

08-29-2005, 10:33 AM
you live in ohio but have california emissions? was your car from cali?

Mike Jung
08-29-2005, 10:42 AM
you live in ohio but have california emissions? was your car from cali?
Some East Coast states also had that version, with an air pump into the exhaust after start-up.

IIRC, only '00 version's of GA's needed that air pump to meet the Cali. emission standard.
The other years of GA's didn't have it.
Not sure if it was ever needed.

08-29-2005, 10:45 AM
Ya i bought it used and if I recall where I bought it from said it came from the east coast.

08-29-2005, 10:47 AM
Some East Coast states also had that version, with an air pump into the exhaust after cold start-up.

Later year versions of GA's didn't need that air pump to meet the Cali. emission standard.
Not sure if it was ever needed.

do you know any other info on this or can point me to a place I can read up on it and see how it works? I'd love to get rid of it cuz it looks dumb and also is in the way to work on the engine

Mike Jung
08-29-2005, 10:48 AM
from: Pump whine (

...for exhaust emissions that our GA's do, but I have a whine (kinda hard to describe) upon cold start up.
My GA has a different emission system on it that employs an electric air pump to pump additional air into the exhaust system to reduce emissions on start up only.
It is programmed to run no more than one minute after start up and sometimes quits much quicker than that.
It was unnerving to hear it at first as I was sure there was a belt or bearing going on one of the accessories.
This little critter is hooked via bendable metal tubing and rubber hoses to ports on the exhaust manifold that run to each exhaust port.
You can tell if you have this system on the GA if you have the funky looking bendable metal tube running down the length of your exhaust manifold that has runners into the manifold...

from: What the heck is this?!?! (

...Improved emissions – The 3400 V6 meets strict exhaust and evaporative emission regulations for all 50 states.
For 2000, it has been enhanced with the addition of the Air Injection Reaction (AIR) system for California and the Northeast states.
AIR allows the engine to meet these states' demanding low emission vehicle (LEV) standards.
It has also been outfitted with intake manifold flow and distribution improvements, new Multec 2 fuel injectors and a new direct-mount, reverse-flow EGR valve.
The Chevrolet Impala and Monte Carlo also feature onboard vapor recovery.

A Better definition of AIR - AIR was used to lower exhaust emissions by injecting warm, fresh air into the combustion process to create an exothermic reaction.
The reaction warmed the catalytic converter more quickly, speeding catalyst light off and reducing emissions during cold starts—a critical phase in certification tests.

from thread: '99 3.4 and '00 3.4 (

For (IIRC) CA emissions; used during cold start/start-up.

from: Haynes Repair Manual '99 & '00

"Secondary Air Injection System:
Some 1999 & 2000 V6 models are equipped with a secondary air injection system is used to reduce tailpipe emissions on initial start-up.
The system uses an electric motor/pump assembly, vacuum valve/solenoid, check valve & tubing to inject fresh air directly into the exhaust manifolds.
The fresh air (O2) reacts with the exhaust gas in the cat to reduce HC & CO levels.
The air pump & solenoid are controlled by the PCM.
During start-up, when coolant is between 50-175F, the PCM will energize the vacuum valve/solenoid, opening the check valve & operate the air pump for approx. 1-minute.
During normal operation, the check valve is closed to vent exhaust backflow into the system."

I think, newer model GA's did not need it to reduce tail-pipe emissions during start-up :confused:

Read thread: WTF is this in my engine bay? no others have it! (

IIRC, some others have taken it off before.
It seems IrateWS6 ( removed his on his GA; but he also had a RSM Supercharger installed in his ride.

Read this thread: A.I.R System with new heads question (

08-29-2005, 11:01 AM
Wow that explains the whine I get.....I too always thought it was a belt going or just my CAI getting good suction on startup lol

Mike Jung
08-29-2005, 11:48 AM
Ok, after looking around...

It looks like the Secondary Air Injection System does not rob power from the engine; after it finishes it's operation after you start-up your engine.

But it does add a few lbs to your weight & makes it a pain to work on your engine sometimes being in the way, as you found out earlier.