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Ask Your Question1993 Honda Accord
Question: my 1993 honda accord fail smog to much nox
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Answer #1
Hal... (see my shops), March 08, 2011, 17:35
MasterTiming and vacuum leaks are typical repairs. Is the cat original?
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low rider, March 08, 2011, 17:45
Rookieyes
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Hal..., March 09, 2011, 10:10MasterTiming, EGR passages clogged or the cat will cause high NOx. Rainbow's in Hayward, make the call...
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low rider, March 09, 2011, 16:24Rookieyes the cat is original, is it possible that the EGR is no good ?
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Hal..., March 09, 2011, 16:27MasterIt might be the passages, not the vale. They get coked up and clogged.
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low rider, March 15, 2011, 15:51Rookiecould the intake control soleniod valvecause nox by not getting enough air flow
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Visitor, March 15, 2011, 16:25Reply
RookieIAC Valve is only to control idle when your foot is off the gas pedal like when you're stopped. I let's air get into the engine while the butterfly is still closed.
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Answer #2
Vickersautorental March 08, 2011, 18:07Reply
Enthusiast95% of the time high NOX only is caused by a malfunction in the EGR system, if you want to bring it by, we will take a 15 min look at the vehicle at no charge
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Answer #3
Rainbowauto from Rainbow Auto Center, March 09, 2011, 09:14Reply
EnthusiastCheck the egr systme first,common failure with the control valve,timing check cause you don't want to over look simple thing.. Third possiable bad catalitic converter...
I would check the easy stuff first, timing,egr passage clogged,egr signal and cataltic converter.....Flag ThisLike0 -
Answer #4
Visitor, March 15, 2011, 15:37ReplyhHi repair pal question about my 1993 honda accord failing smog,could the intake control soleniod valve cause to much noxs
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