PCM Emissions?

**jeffs98ls1** · 04-29-2008, 12:53 PM

My car will not pass emissions because the PCM is saying that it is not ready because of the rear O2 simulators (car has LTs). Would having the rear O2s deleted fix this issue or would I still have the same problem?

**Wesman** · 04-29-2008, 01:14 PM

Originally Posted by jeffs98ls1

My car will not pass emissions because the PCM is saying that it is not ready because of the rear O2 simulators (car has LTs). Would having the rear O2s deleted fix this issue or would I still have the same problem?

Yes, having the rear O2's deleted should fix the problem.

It should come up "no errors reported" once they are deleted, instead of "Not ready".

**Spaz** · 04-29-2008, 01:19 PM

Originally Posted by jeffs98ls1

My car will not pass emissions because the PCM is saying that it is not ready because of the rear O2 simulators (car has LTs). Would having the rear O2s deleted fix this issue or would I still have the same problem?

your SES light is on??? i'm not sure how emmission work in other states... but in PA if that light isn't on you pass...

**jeffs98ls1** · 04-29-2008, 01:27 PM

no my light is not on. The PCM is saying that the rear 02s are not ready.

**jeffs98ls1** · 04-29-2008, 01:30 PM

I have rear O2 simulators in to keep the SES light off.

**Spaz** · 04-30-2008, 05:27 AM

Originally Posted by jeffs98ls1

no my light is not on. The PCM is saying that the rear 02s are not ready.

so.... why are they scanning for shit?

**bigrondownhiller** · 04-30-2008, 10:22 AM

How long has it been since you put the simulators in? At certain intervals the pcm checks sensors and readings to make sure they are within cerain perameters. If the pcm hasn't cycled yet thats why it is saying that. You might have to drive the car a little more.

**jeffs98ls1** · 04-30-2008, 12:52 PM

yes the car has been sitting. I drove it about 50 miles before having the emissions done. How long do I need to drive it for?

Here are the inspection results

MIL command status: Pass
Diagnostic connector: Pass
OBD communications: Pass
Readiness result: Fail (is this from not drinving enough?)
MIL KOER: Pass
O2: completed
O2 heater: not completed
catalytic converter: not completed
MIL KOEO: Pass
EGR system: not completed
Evap. system: not completed
Secondary Air: completed

The simulators have been in for a few years now.

**bigrondownhiller** · 04-30-2008, 01:14 PM

Was it ever a problem before?

**jeffs98ls1** · 04-30-2008, 01:33 PM

No they just recently started doing these new emissions.

**Spaz** · 04-30-2008, 01:46 PM

Originally Posted by jeffs98ls1

No they just recently started doing these new emissions.

dude... find a conector that fits in to the plug (drivers side under the dash)...plug it up and tell them they "can't remove it... that is it part off a special tracking device and it will trigger a theft and thhat they owuld have to pay a $200.00 fine for when the cops come out..." they can't do shit then... taht is fucking retarded...

**Wesman** · 04-30-2008, 03:13 PM

Originally Posted by jeffs98ls1

yes the car has been sitting. I drove it about 50 miles before having the emissions done. How long do I need to drive it for?

Here are the inspection results

MIL command status: Pass
Diagnostic connector: Pass
OBD communications: Pass
Readiness result: Fail (is this from not drinving enough?)
MIL KOER: Pass
O2: completed
O2 heater: not completed
catalytic converter: not completed
MIL KOEO: Pass
EGR system: not completed
Evap. system: not completed
Secondary Air: completed

The simulators have been in for a few years now.

Must have something to do with the way the simulators communicate with the ECU. They must just keep it in a "Not Ready" state indefinitely to keep the MIL from being set.

Did you disconnect the battery recently?