jrsimon27

iTrader: (1)

hey friends got the check engine light but when they conected the obdII diagnostic reader it didnt have any dtc or errors!! and the check engine was still on!! what does this mean???

dbdude

iTrader: (7)

Is your gas cap on tight? Are you really at honduras or are you from their?

jrsimon27

iTrader: (1)

hi freind iam from honduras i do live here

jrsimon27

iTrader: (1)

i went and checked the gas cap and it was tight
what else could it be?

Evilution VIII

If the check engine light is on, and there are no faults it is pointless checking the gas cap,
the gas cap not being tight is not going to just turn the light on by itself, it will throw a evap leak fault,

If the check engine light is on, and there are no faults stored, there is probably an issue with your instrument cluster, or the harness going to it, something is triggering the light, either a short in the harness or a faulty cluster itself.

jrsimon27

iTrader: (1)

whats a faulty cluster?? thanks BTW

jrsimon27

iTrader: (1)

well what i did was i disconected the battery and the light went off !! i did some driving and it hasnt got back!! also the time when i got the light i was driving in 5th gear at about 80mph and the engine did stutter or hestitated twice and the light came on took it to mitsu they hooked up the diagnostic reader and there where no codes!! do you think i missed fired and the computer registered the code but then it erased it but left the light on !!!

Evilution VIII

Im sorry for not explaining it better,
the instrument cluster, the actual unit in the dash that has all the gauges and lights in it. that unit itself could actually be bad, its a bunch of things all connected together on an integrated circuit, if there is an internal problem with it causing the check engine light to come on, then the entire instrument cluster needs to be replaced, but also there could be a problem in the wiring harness that goes to the instrument cluster, such as a short.

one of these two things is probably what is causing your problem.

dbdude

iTrader: (7)

Have you tried reseting the ECU? You must have ALOT of money to have a EVO in honduras. How much does an evo run over their in us dollars? About 55-60k??

jrsimon27

iTrader: (1)

but why did the engine stuttered while driving and then got the light?? i know something went wrong ?

Evilution VIII

Well obd2 cars are pretty smart now a days, usually if the engine misfires it is going to throw a fault, atleast a P0300 which is a misfire checksum and most of the time with that fault it will throw an additional fault with it telling you which cylinder or cylinders were actually misfiring, like P0303 if cylinder number 3 misfired and so on.

jrsimon27

iTrader: (1)

nop i got it for 43k USD they imported directly from japan!

Evilution VIII

I wouldnt worry too much, When i first read your original post i didnt know there was an event that happened along with the light, i just thought the light was on and that was it,
it seems like everything is operating normally now, if there is an actual problem such as a misfire, it will eventually come back and set the light again along with a fault.
Probably nothing to worry about.

jrsimon27

iTrader: (1)

yeah it felt like a missfire but no code!! still i dont get!! it missed fired got the light i checked it and there was no code!? well i disconected the battery and havent had it again!!
what i did before getting this missfire or stuttering i did use some NOS octane booster do you think this caused the missfire??

jrsimon27

iTrader: (1)

i hope so and thanks for the help evo 8