Anybody throw codes after header install?
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Joined: Feb 2002
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From: Round Rock Texas
Anybody throw codes after header install?
Ive been getting "Secondary air injection" codes since my header install. I have O2 sims and the O2's welded into the collectors. Anybody have this same problem. I have a 96 LT4 with the L98 headers, and all the EGR stuff removed. Any ideas? Thanks in advance.
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Joined: May 2001
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Re: Anybody throw codes after header install? (kenenator)
Did you remove the AIR pump in the process? If so that's probably your trouble. I guess you can either plug the air pump back up but don't connect any of the plumbing or you can have it turned off in the computer.
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Joined: Jul 2000
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From: Probably in the paint booth....
Re: Anybody throw codes after header install? (kenenator)
Hehe.....
Yep. I had the same thing. The AIR pump turns on & the PCM monitors the O2 voltages for a change. If the change doesn't occur the DTC sets. Bet dollars to donuts the AIR pump isn't hooked to the headers. What's the model # of your headers?
LT1 Edit will solve your problems but it's $550.00. If you aren't going to do anything else to the engine I would get perf. shop with the software to fix it & reflash the PCM (It takes about 5 mins.) They will be less but you won't be able to play with the tuning yourself.
Neal
Yep. I had the same thing. The AIR pump turns on & the PCM monitors the O2 voltages for a change. If the change doesn't occur the DTC sets. Bet dollars to donuts the AIR pump isn't hooked to the headers. What's the model # of your headers?
LT1 Edit will solve your problems but it's $550.00. If you aren't going to do anything else to the engine I would get perf. shop with the software to fix it & reflash the PCM (It takes about 5 mins.) They will be less but you won't be able to play with the tuning yourself.
Neal
Race Director
Joined: Jul 2000
Posts: 11,007
Likes: 1
From: Probably in the paint booth....
Re: Anybody throw codes after header install? (kenenator)
No but you will need to do lots of reading & take BABY steps. It's very cool but can kill the engine.
The web site is: http://www.carputing.com
Neal
[Modified by Arisa, 1:05 PM 10/3/2002]
The web site is: http://www.carputing.com
Neal
[Modified by Arisa, 1:05 PM 10/3/2002]
