Engine, Intake, Exhaust Modifications to your Normally Aspirated Hyundai engine. Cold Air Intakes, Spark Plugs/wires, Cat back Exhaust...etc.

Check Engine Light!?!? WHAT?!

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Old 02-22-2004, 10:02 PM
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Ok, this took me for surprise.

Last night, all of a sudden, my check engine light came on. I haven't done any engine work to the car for a long time. I need an oil change, and I'm gettin one tomorrow, but I know the CEL is for other things. I'm at 67000+ some miles and I have no clue at all why it's on.

For debate purposes, I have an AEM CAI, SS Autochrome Header, NGK Plugs and Wires
Old 02-22-2004, 10:22 PM
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Did you fuel up last night?
Old 02-22-2004, 10:27 PM
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u really think that would have anything to do with refueling the car?
Old 02-22-2004, 10:34 PM
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QUOTE (cdogtibby1)
u really think that would have anything to do with refueling the car?


Yes, if your cap is not on correctly it will cause a CEL.
Basically an Evap leak

Next, is check your plugs, and wires that's usually the other case if it's not the cap.
Other than that, it's a little more serious.
If you tighten your cap and after a few runs, it doesn't go off
When you're at the dealer get them to scan it.
Old 02-22-2004, 10:49 PM
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ohh very true... i never thought about that... it did say that if you left the fuel cap undone enough that the cel would come on... its in the manual. ur the man KayJai...!!!
Old 02-22-2004, 10:50 PM
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QUOTE (cdogtibby1)
u really think that would have anything to do with refueling the car?


:roll:

I may be a whore, but I'm a usefull one.

If you get a random CEL and have refuled or syphoned recently, it could be that your gas cap, yes, your GAS CAP, is not tight or is leaking.

It takes up to 15-20 Driving cycles (Get in car, start car, drive car until you hit operating temperature, park, turn car off = driving cycle) to clear that CEL.

It's a shame but some folks have paid to have it cleared just because they don't know what it is.
Old 02-22-2004, 10:51 PM
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When mine came on, I was doing 140km on the highway(401, for those in Ont).. and the CEL came on.. Turns out, that cyl#4 was misfiring. You may want to look at the Plugs/Cables, as it was my reason..
Old 02-22-2004, 10:51 PM
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Go to Auto Zone... they check the CEL for free. I've thrown a CEL for the fuel cap once... but weird thing is, it was on properly :-/ it went off about 1 or 2 tanks later
Old 02-22-2004, 10:54 PM
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QUOTE (REDZMAN)
QUOTE (cdogtibby1)
u really think that would have anything to do with refueling the car?


:roll:

I may be a whore, but I'm a usefull one.


Well,..... others would have other thoughts tongue.gif wink.gif

But yeah 1st check is gas cap.

Only time I have ever had a CEL is when my purge value stuck open because it was -50billion out and it froze open. It was replaced under warranty smile.gif
Old 02-22-2004, 11:05 PM
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yeah my car throw's CEL's a lot, i just leave them on, code is an evap leak, so i'm not too worried about it, no problems with it yet.



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