andyy

i installed a new header and mil eliminator to my P5~ but the CEL is still on............
what can i do? is that possible to scan, pull and clear the computer code~~
anyone who can help please........ thank u!!!

Matty Mooling

don't double post

GNO

Yes, you can hook it up to an OBDII scanner and clear it. I've got one. Some auto parts shops will check/clear it as well.

Phantom Cruiser

stick a piece of black tape over the light

andyy

thank u~ i will post the result after the code is cleared!
to see if it will come back or not

andyy

hi GNO:
does ur CEL come back again at high way speed? i have cleared it, but the guy who clear it for me said it might come back again at high way speed.

GNO

Sorry, no header here.

With the MIL Eliminator, the problem shouldn't reoccur. Did you reset the PCM? Disconnect the battery for at least 20 minutes.

andyy

hi GNO:
Before i cleared the error code at mazda dealer, i have tried the method to disconnect the battery. But the CEL would just be gone for one or two days, when hit highway speed then it was on.
i went to the dealer to clear the code today, and they didnt disconnect the battery. i will post the result to see if the CEL wil be on or not in few days.
thank u, GNO~ u r the only one who can answer my Q in the entire club...

GNO

Did you happen to get the code that was set? Maybe it's not header related.

andyy

GEO
what do u mean?
The computer scaned the error was the from the rear O2 sensor.
Which is the one i have the mil eliminator installed.....

GNO

Just wondering if you picked up a specific code. The second O2 sensor could be anything from P0136 thru P0141. Sometimes the code gets printed out on the invoice.

I mentioned disconnecting the battery because the PCM does some learning and resetting it would wipe out those values. It should not be the method to clear codes, because it doesn't clear the code, it just turns off the light temporarily.

andyy

P0140 is the error code...
so far, the CEL is not coming back yet at highway speed.
i will keep updating more info to see if the light is back or not!!
thank u GNO~ u really help a lot^^

GNO

That's no circuit activity detected. What probably happened was the PCM was expecting to see more fluctations in the reading. The MIL Eliminator didn't give that.

Good to see it hasn't come back.

andyy

something i observed. with the CEL on, i got better millage.......
Without CEL on, i could run 500~510KM per tank. With CEL on, i can run about 530km per tank. -_-!
With CEL on, the knock feeling when shift gear is more obvious than without CEL on.
I guess maybe the fuel supply is lean when there is no converter. computer detect dirtyer exhause, then supply less fuel.......!?
Anyone had the same experience??????????