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Definition of P0420 is catalyst below threshold. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). Catalytic converters are not normally a "wear" type item, that is they are not deisgned to wear out and need replacement. If they have failed, it is likely due to something else that caused it to fail.
P0447 Evaporative Emission Control System Vent Valve/Solenoid Circuit Open. The Powertrain Control Module (PCM) has detected an open within the circuit that controls the vent valve or solenoid for evaporative emission systems vapor.
remove the hose to the PCV and It simply pulls out and a new one is pushed in and hose is inserted back on. It's kind of like a cork. I can not believe they check for visual inspection. Here in SC, we don't have inspections. But anyways, GOOD LUCK
the pcv valve is behind the alternator between the alternator and oil filter. when you remove the oil filter you can see the pcv in the intake manifold. best way to get to it is through the pass side fender under the rubber mud flap thats between the wheel and engine.
i think it should be pcv or egr. no idea what a ecg might be.... unless you are having a heart attack or something.
if its pcv...its a small fitting attached to the valve cover, it has a
small valve in it and a hose going to the intake. new one is under 10
bucks, and its 1 minute to change.
egr...a little more involved. have someone you know with a little
automotive knowlege check it for you. the check is easy, if no good
could be valve, passages, etc. what does the smog fail sheet say
exactly????
Thanks TG. I found one @ a junkyard.
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