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Your secondary oxygen sensor should read 0.0 volts when the car is in lean burn.
Egr valve operates on the valve overlap on cold start up. You cleaned the intake manifold and the runners ontop of the manifold too right?
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Current: 1997 civic lx
Past: 1998hx/1996hx/1997lx/1997hx Cali/1997hx
OG lean burn member
My civic thread
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