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Discussion Starter #143
It wasn't an OEM part. I don't know how they did it.

I just cleared the codes. I will drive an hour tonight to see what the scanner says once the OBDII monitors are ready again.


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Discussion Starter #144
Cleared the OBDII codes. Have driven a couple hundered miles.

I still get the flashing check engine light after 20 seconds w key at ON which signifies OBDII monitoring systems not set. I don't have any codes, car runs smoothly, using an auto zone scanner O2 sensor tests were all ok. The check engine light should just go off after lighting for 20 seconds if OBDII monitors were working well.

Won't pass inspection as of now, but I have until December and my HDS system coming soon.


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what changed from before? You were getting CKP sensor error, along with misfire codes... now just a flashing check engine light? Really confused...
 

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Discussion Starter #146
Car runs fine. No check engine when running. However, cleared the codes from memory to see if anything comes back.

"If you have reset your ECU or Disconnected the Battery and/or erased the code/or codes after a repair. You will need to drive up to 200 miles, in order for the OBD2 to set all of the sensor reading to ( Ready Status )."

On the Acura if you put the key to ON engine OFF, the check engine light comes on. After ~20 seconds, it will turn off if all of the OBD2 monitors are fine in your car, or will flash 5 times first if they are not.

Need to do below I think:


OBD-II Drive Cycle
(Taken from Understanding OBDII: Past, Present & Future)
The OBD-II drive cycle begins with a cold start (coolant temperature below
122 degrees F and the coolant and air temperature sensors within 11 degrees
of one another).

NOTE: The ignition key must not be on prior to the cold start otherwise the
heated oxygen sensor diagnostic may not run.
1. As soon as the engine starts, idle the engine in drive for two and a half
minutes with the A/C and rear defrost on. OBD-II checks oxygen sensor heater
circuits, air pump and EVAP purge.

2. Turn the A/C and rear defrost off, and accelerate to 55 mph at half
throttle. OBD-II checks for ignition misfire, fuel trim and canister purge.
Hold at a steady state speed of 55 mph for three minutes. OBD-II monitors
EGR, air pump, O2 sensors and canister purge.

3. Decelerate (coast down) to 20 mph without braking or depressing the
clutch. OBD-II checks EGR and purge functions.

4. Accelerate back to 55 to 60 mph at half throttle. OBD-II checks misfire,
fuel trim and purge again.

5. Hold at a steady speed of 55 to 60 mph for five minutes. OBD-II monitors
catalytic converter efficiency, misfire, EGR, fuel trim, oxygen sensors and
purge functions.

6. Decelerate (coast down) to a stop without braking. OBD-II makes a final
check of EGR and canister purge.


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Discussion Starter #147
what changed from before? You were getting CKP sensor error, along with misfire codes... now just a flashing check engine light? Really confused...
Sorry, after running rough for 60 miles, after an overnight, it has begun to run normally with no codes. Now just trying to reset OBD2 monitors after clearing codes.


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