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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Would this cause SES light?

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Old Oct 19, 2003 | 09:24 PM
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NewbieWar's Avatar
NewbieWar
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From: Germany
Would this cause SES light?
well im just trying to diagnose this myself

would a bad opti cause a SES light?

what about EGR valve?
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Old Oct 19, 2003 | 09:27 PM
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AxeGrinder30thZ
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From: Pelzer, SC
I dunno about opti...but yes, a bad EGR can. In fact, mine is right now. I have a P0400 code, which is EGR recirulation flow malfunction. Looks like I gotta get it replaced.
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Old Oct 19, 2003 | 09:30 PM
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NewbieWar
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so if i dont get a light i dont have an egr problem?
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Old Oct 19, 2003 | 09:38 PM
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AxeGrinder30thZ
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From: Pelzer, SC
I wouldn't think so. I'm pretty sure if the EGR was messed up, it would let you know. Might want to make some searches and see if anyone else has done simliar posts.
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