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Emissions Question

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kilries

15+ Year Contributor
37
0
Jun 3, 2004
Las Vegas, Nevada
ok had my 99 gst smoged today and it passed but on the test it says Egr system not ready ive searched and read but im not finding any information. any info is appreciated.

Thanks
 
Not ready is refering to the obd II monitor readiness status. on obd II vehicles the ecu runs tests on all emmission components to make sure they are in working order. it just means that the test has not run which doesnt neccesarily mean something is wrong with the egr valve. hope this helps
 
This can happen for a variety of reasons. You've probably been driving it since any possible ECU reset to give the system the right parameters to test the rediness state. More than likely it's because of a fault in the system. My EGR worked fine until I took it off, then later put it back on and it refuses to show ready.
Here is a Mistubishi TSB on the conditions necessary for the ECU to test the readiness state of the OBD systems.
 
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