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

Would this cause SES light?

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Old

10-19-2003, 09:24 PM

#1

NewbieWar

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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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10-19-2003, 09:27 PM

#2

AxeGrinder30thZ

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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

10-19-2003, 09:30 PM

#3

NewbieWar

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so if i dont get a light i dont have an egr problem?

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Old

10-19-2003, 09:38 PM

#4

AxeGrinder30thZ

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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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