Smog system 1987 chevy 5.7L suburban

1987 CHEVROLET SUBURBAN
V8 • AUTOMATIC
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DONALD6825
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Will there be any communication issues with ECM regarding the fuel air mixture if I properly disconnect the smog system(Plug exhaust manifold, disconnect electrical, plug vacuum ports)
Mar 1, 2011 at 4:39 PM
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JDL
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If you live in a state that does sniffer tests, I don't think that will work. Also, may turn on check engine lite?

Illegal?
Mar 1, 2011 at 6:58 PM
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JDL
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The o2 sensor tells the computer if system is rich or lean.
Mar 1, 2011 at 7:01 PM
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DONALD6825
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Thank you for the answer. That is what I hoped you would say, thanks
Mar 1, 2011 at 8:46 PM
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JDL
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  • 16,098 POSTS
  • ASE Certified Mechanic
Glad to help.
Mar 3, 2011 at 4:55 PM
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