emissions trouble

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Dec 4, 2007 | 02:51 PM

stonemonk

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emissions trouble

hey guys, i have a 99 z28 w/ the egr, air, and no cats. I have used the diablo to tune out the codes necesary to get the engine light off and it seems that every time i do this after a few miles of driving the light comes back on the codes re appear. I have tried a few times w/ no luck, any ideas?

Dec 4, 2007 | 02:53 PM

horist

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From: Lake Zurich, IL

it probably just clears them but doesn't disable them

Dec 4, 2007 | 02:59 PM

stonemonk

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the tuner says its suppose to shut them off, there is a seperate option to just clear codes

Dec 4, 2007 | 03:23 PM

2001NBMZ28

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From: Jacksonville, FL

Something's wrong, the later versions should permanently turn off P0420 and P0430, along with the EGR and AIR codes if desired.

Dec 4, 2007 | 03:31 PM

stonemonk

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it generally throws the egr code, i want to say its a p0410??

Dec 4, 2007 | 03:59 PM

2001NBMZ28

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P0410 is an AIR code, maybe P0401? - that's EGR. I read your first post to state you still had AIR and EGR, just no cats. It should still turn if off for you though.

Dec 4, 2007 | 04:21 PM

stonemonk

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my bad, i meant to put i deleted egr and air, and did a search for all the codes that needed to be off and turned them off through the diablo, and i still get egr, it could be 0401, i will double check that tomorrow, but it seems no matter what i do they continue to come back?!?!