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#1
03-26-2001, 06:13 PM
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NOx emissions
NJ is an emissions state, my 500sel failed NOx at 1550, did plugs wires, rotor, cap, air filter and brought it down to 1100, but not good enough, what next?
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#2
03-27-2001, 09:34 PM
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High NOx
cool off your engine!! probably have plugged or inoperable EGR valve. Also be sure engine spark timing is correct and the vacuum advance/retard is working correctly. If the CO level is OK, not likely the cat muffler is bad, but possible.
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#3
03-28-2001, 08:48 AM
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I suspected EGR valve, but went to the parts page and could not find one, how do I locate my EGR. THanks, could it be o2 sensor
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