Still "Not Ready" after 500 miles!!
10-28-2010, 08:43 AM
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Still "Not Ready" after 500 miles!! Well two weeks ago I went for an inspection and failed with two NOT READY readings of the 02 sensor and the evaporative system. I drove 500 miles and still have both of them. I can only have at most one to pass but no amount of driving seems to be shutting the damn thing off.
Could there be a problem with the car/tune that won't run the diagnostic? Because I don't want to be driving with no inspection.
Could there be a problem with the car/tune that won't run the diagnostic? Because I don't want to be driving with no inspection.
10-28-2010, 09:41 AM
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If I shipped you the PCM could you see what the problem is without messing with the tune or possibly just setting the two readiness codes to #3? What would be the turn around shipping priority both ways and cost of doing that?
10-28-2010, 09:51 AM
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im not sure, so dont crucify me here, but but with my wifes old saturn, she had the two readiness codes also. there was an actual drive cycle we had to do to get the ecm to clear and be good for the inspection. I cant remeber specifics but it was something like driving at certain speeds for a certain time, then braking to a slower speed, to speeding up then completely braking. then it was accel to say like 40 miles per hour and maintaining that speed for a period of time..... my buddy brought home some GM "how to" instructions when he worked at the dealership as a maintenance manager. it was an absolute pain in the *** cause it felt like if we deviated even slightly from the instructions it wouldnt work.... basically we ended up selling the car, the garage said it needed a new ECM. good luck man
10-28-2010, 11:04 AM
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It could be about how the codes were killed. But I have
also once had an EVAP sensor problem that aftermarket
scan tools could not "see" that the dealership replaced
under warranty - it was not setting a code but it was
inhibiting crank relearn so I suppose could also have
inhibited other EVAP system readiness tests. Readiness
requires no codes set, but I am suspicious there's more
ways to fail than just that.
But I'd begin with checking what you (or others) -can-
see. Dealerships tend to get pissy when you show up
with a hacked up car and want them to touch it. Unless
you have a buddy in the pit and the service manager's
on vacation.
also once had an EVAP sensor problem that aftermarket
scan tools could not "see" that the dealership replaced
under warranty - it was not setting a code but it was
inhibiting crank relearn so I suppose could also have
inhibited other EVAP system readiness tests. Readiness
requires no codes set, but I am suspicious there's more
ways to fail than just that.
But I'd begin with checking what you (or others) -can-
see. Dealerships tend to get pissy when you show up
with a hacked up car and want them to touch it. Unless
you have a buddy in the pit and the service manager's
on vacation.
