: Disabling air injection system in 2002 engine?

08-11-11, 08:37 PM
Is there any way to just totally disable the air injection system?

08-11-11, 09:19 PM
Hate to tell you this, but - NO. AIR is not only an emissions item but also insures quick cat lightoff under cold conditions - it cuts emissions and prolongs cat life. Too damn many PCM/mixture sensors feed this operation.

08-11-11, 09:41 PM
What reason would you have to disable it anyways?

08-11-11, 10:59 PM
Simply unplugging it will disable it, but you will have to live with the SES light on and will not pass an emissions test if you are subjected to one.

08-12-11, 04:21 AM
The pump went out. Leave it to GM to invent yet another virtually useless component. Oh well. Lol

08-12-11, 04:22 AM
Getting p0410

08-12-11, 12:04 PM
Before you start removing the pump assembly, in your 1999 STS the AIR pump relay should be clipped to the passenger side strut tower - a gray relay on a pigtail. Pull it off the bracket and disconnect it. See if the pins/socket are squeaky clean. Shoot with some Radio Shack electronics cleaner or tuner spray. See if that helps.

Otherwise, talk to Chris in Rippy Cadillac parts ^^^ up in Vendors. Replacing the AIR pump, inside the LF fenderwell inner liner, is a relatively simple job complicated by no room to work. The new kit has an intake hose which GM wants you to plug into the air cleaner ducting - forget that - why cut a hole - simply wire tie the open end up in the engine compartment. The idea is to cut water ingestion, the prime reason for failure in the first place. (Ask Ranger all about it..........)

08-12-11, 12:15 PM
The new kit has an intake hose which GM wants you to plug into the air cleaner ducting - forget that - why cut a hole
No cutting required. There is an oblong hole already stamped in the inner fender up high by the air filter housing and the hose is made to snap right into it.

08-16-11, 08:00 PM
Ill check it out. I believe a piece on the bottom of the unit came off allowing water injection as u said.

08-16-11, 11:06 PM
Be advised, the replacement is the same as the one that came loose on the bottom. It is a shitty design as far as locking the intake cover in place. After I installed my new one I wrapped the hell out of it with wire to keep it in place. It looks like it was installed by Bubba and Billy Jo, but it ain't coming loose again and it is hidden from sight anyway.

08-17-11, 12:43 AM
Lol. Ill look into that as well