Ok guys, so any idea what I can do to fix this P0410 code?

"Secondary Air Injection System Malfunction."

I am running headers without the air tubes on them. Disconnected all of the piping associated with that, so i just have the hose that goes from the air pump down by the drivers side bumper to the driver header area sitting there. No pressure or vacuum to it. Is the computer looking for some kind of pressue to go INTO this pipe from the exhaust system?

In order to pass inspection I've gotta figure out how to keep this code from being thrown. Inspection has gone out since Feb .... last year

Edit: Well i found a great link (http://www.digitalcorvettes.com/foru...oto=nextnewest) that is pointing towards that since it's not injecting any oxygen rich air into the exhaust, the computer notices that the voltage on the front O2's is not representing a lean position. Sooo.. sounds like there isn't really much of a way to get around this besides having it programmed out of my computer. Comments?

Thanks!!
Curtis

 

sorry, i've got no idea on your problem, but i have to ask this because i'm going to install headers on my 85; in the past, have you passed a visual check with no air tubes on the headers?

i didn't read the article you linked, but if that is the problem you might cure it with rear o2 simulators. or whatever they call them.

i've just been researching that question on the web. talk about a pita.

i might be having the same problem myself, so i'm interested too.

also, if you have them, have you passed with a dual exhaust and cats?


thanks, frog.

 

Yes, passed with the headers, dual exhaust and cats. Emissions wise, the car runs fine, but it won't pass with a code. I did run that with an OBDI computer though. When they try to plug in their emissions scanner, it fails saying that there is some connection problem and tells them to dyno it like the older cars, and i passed that way. Most people that do the inspection don't know to look for the air tubes on there anyway. If I were to tell them that my LT4 doesn't come with EGR because the cam is setup differently not needing it, they wouldn't know that either. As long as everything looks right and it runs right (all your pollutants within range - but they should be if you've got the engine running right anyway) ... that's all that really matters here in Texas.

I do have O2 sims on the rear spots, but from what i've read in that link, it's not the problem. If i could fake out the fronts when it pumps that oxygenated air into the exhaust normally, that would solve my problem. Not sure I can do that though, haha.

 

Glock,

I'm thinking yes... as I had the same codes come up as well... when I was doing the same thing as I don't see any sensors for like pressure or anything...

Uhm I know on my 96 you can basically turn off the code from tripping with like LT1 edit...

In CA I have to pass visual here... I just put on the AIR and I had to actually shim the pipes to keep them from leaking . It actaully starts better i the morning... and no codes since I put the AIR pipes back on...

I agree it looks nicer without them...

MO

 

I just hooked mine back up. I still get that code now and again along with a TPS code. The Air doesn't hurt performance at all. It only runs on start-up to help heat up the CATS. The Impalas had a service bulletin out on how to disable this but you have to have a TECH 2 to do this.

 

The reason i got rid of the AIR system was to make the engine look nicer as well as to make it easier to work on things. it's a pain in the *** to work around those stupid pipes.

 

thanks for the answer.

i don't get the computer throwing a code when, as mentioned, the air system only works on start-up--unless the ecm is programmed for the o2 increase during this time and compensates???

if you've got the air system that uses the air pump and manifold tubes, the ecm operates a couple of valves that dump the air when not being used. if you removed the relays that control this, my 85 has a couple cluttering up the front and i'm worried about pulling them, that could be causing the code. an ecm re-program may be needed. i don't know.

when they test you in dallas, do they plug into your port to look for stored codes? i saw something like that on the epa sites last night. as i remember, it depends on the pollution status of the city and the year of your vehicle. when the code is thrown, does it show up on the dash, or just when running the diagnostic?

one technique that could help you get through emissions is pulling over right before you enter the facility and disconnect the battery, or do it in line if it is long; although, that might attract attention.

try a test: disconnect the battery on a cold car, re-connect and see how long it takes to set the code--sitting and or driving.

do the same on a hot motor. if this looks hopeful, clear the codes and then drive 5-10 miles an hour, or whatever speed you will drive while going to the facility after a close stop. of course, if the code is only showing up during the diagnostic, then this test would take some time.

if the code happens during, or just after the time the air should be pumped during start-up, that points to an ecm relay check and failure.

i hope you can find a better solution.

also, while researching last night, i can't count the number of people who removed the system and passed emissions, but failed the visual--as i remember mainly for a lack of a pump. but this makes sense. it is only designed for start-up. people in ca. who put a cat on a car year that wasn't required failed too.

here's a couple of sites that are definitive. the non-epa site lists what is required per state, and i can now see that you do have an obd check--sucks. that one should be a sticky. what else sucks, is the crap i had to wade through to find these decent sites. i felt like there was going to another one right around the corner. it's worse than gambling.


http://www.etools.org/files/public/I...w_12_02_05.pdf

http://www.epa.gov/region07/programs...ri/50-2280.pdf


let me know if the code is only visible during the diagnostic.

 

I think that i'll be fine for visual as i've passed it before with headers on, except they were shorties with air tubes.

Also, pulling over to disconnect the battery won't help because OBDII computers store error like that for long time. I think that a P0410 is stored deep inside the memory of the computer until 40-50 starts are done without the code set!

I think my best chance at passing is going back to the speed shot i was inspected at last time and using an OBDI computer that is tuned properly. Luckily that's sitting on the shelf in the garage, but the program is way out of date as it was made to run with the car when it had the cam off a tooth. (oops )

 

i fixed the links. also, if you haven't tried to pass w/out air tubes yet, you may have a problem--that is supposed to be part of the check. but it may depend on the experience of the tester. if they've got a check-list for what should be under the hood on their screen, then you could be in trouble.

also, does the code show on the dash, or just when you run a diagnostic???

if you find a fix, please let me know. if you pass or fail emissions with the airless tubes, please let me know. post or pm me.

thanks