Check engine light help
 

Hey what is the check light that is right below the oil light? its kinda like the shape of the intake resonator... i really need to get a owners manual.. thanks guys

malfunction indicator

its running fine, i undid the battery and it went off... what do you think i should do? do i need to check a code?

have you changed out anything on the car?

When i swapped out my exhaust setup up, the o2 sensors weren't reading the output right. It took a few months for the engine to readjust and now it runs just fine. Everynow and then i see it but i pay it no mind. (....maybe thats not good.)

Stop messing with your car, in the last few days you have been doing alot of that.

haha i just got it, have to mess with it a little bit, yea i did change something, i removed the resonator and got a plastic tube and made myself a homemade short ram..

Did you start the car with the MAF sensor disconnected? Cause if you did then you have to go to AutoZone or Pep Boys and get your codes cleared. If you didn't start it, then I dunno...

im such a newb, um maf sensor? do you mean the iat sensor?

It's the little plug that goes into your air filter box. Did you disconnect it at all and start your car?

our cars dont have a mass air flow sensor. We have a IAT sensor and a MAP sensor.

well the light went off when i disconnected the battery.. if it doesnt come back on, is this something i should worry about or get checked out?

:bump:

ya its important. Buy a code reader or take it to an auto parts store so they can read the code.

Really? Which is the one on the air box? And what do MAP and IAT stand for? But yea, I forgot about the disconnecting the battery thing...

MAP is a presure sensor. IAT is the one in the airbox and stands for intake air temperature.

Oh ok. Where's the MAP at?

gearbox, i got one more quick question, Since i disconnected the battery and it went away.. if the light does not come back on, Does that mean i still should get it checked? Or anyone else who knows :cool:

I know you didn't ask me but meh...
First you should re-check that none of the wires are loose on the harness double check the whole thing. Then redo the battery reset and if it still doesn't go away have it checked out.

yea its gone and i drove it for awhile and the light didnt come back on.. so should i still check it out? or am i cool because the light is gone.

If the light doesn't come back on then don't worry about it.

do yourself a favor, buy an OBD II reader and get the codes...and also don't make any homemade parts unless you actually know what your doing. Buy a short ram that's reputable, don't get some cheap ebay no-name part from God-knows-where. The OBD II reader will tell you what's up with your car and you can go from there. Tuning your car is like G.I. Joe: KNOWING IS HALF THE BATTLE! =)

Hey now, I got an eBay tube on mine and it works great :P But I guess I got lucky cause it had the hole for the IAT sensor and everything (which I've heard most you have to drill your own). But how much is an OBD-II reader? Any place I can get a deal on one?

you can buy an OBD II at any Kragen or Pep Boys. I bought mine for $60. Most places charge you a lot more than that to read it so you'll be saving yourself a lot of time and money. If your gonna tune, your gonna run into some check lights so this is well worth your money. Oh and the only reason I say don't buy a no-name intake from ebay is because, well, I did buy a no-name intake and it was a crap-shoot. Never again.

the map sensor is located on the intake manifold.

yes you still need to go get it checked. The code will still be stored in the PCM and if you do the diagnostics for it, it will tell you if you had a intermittent failure and now everything is fine, or if there is a problem.

hhahah speaking of leaving the IAT sensor off and starting the engine...that happened just todai. i was checking the tb heater bypass thingy that i did just in case the tubing were leaking coolant and totally forgot to reconnect the sensor which causeing to thro the cel. gonna head tommorrow to dealership to get it cleared and see if it isnt anything else. hopefully its covered under warranty..right?

IS there anyway to reset the codes yourself or is there a reader that has this ability that is reasonably priced?

Make sure your gas cap is tight. If not it can cause a CEL.

tHE CODES ARE STILL IN THERE, THEY STAY TILL IT GETS CLEARED! Oops! Sorry about the caps.