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View Full Version : Odd/Random Check Engine light happened tonight.



blankets3
01-25-2010, 02:28 AM
It might just be a lil moisture but i dont think so...

Its been raining all day

( I have had days where its been raning all day and snowing all day and no CEL has come up)

K&N intake = short ram
Vibrant Header.
Hks Exhaust.

Well I was out tonight getting some bubble tea and than went back to my g/f's place everything was fine. I left a few hours later (mby 3) and I had a CEL on so I thought wtf, on my way home im pretty sure the CEL went off when I was sitting at a red light but than immediately came back on (my mind might have been playing tricks on me, stopping at the next few lights on the way home didn't make em turn off so i'm thinking it didn't actually turn off)

I stopped at a gas station to look at my MAF wires and my Front o2 sensor on my headers everything seemed okay and my 2nd o2 sensor is fowled so I don't see how that sensor could be giving me a CEL.

the really strange thing is that my Air/Fuel mixture gauge was on rich the entire time, but it wasn't as if one of the wire stopped working cuz it was drop down like 2 led's ( still in the rich ) this has never happened b4, when i start the car its usually red till it warms up than it reads fine never have been burning rich b4 so..

now about my Air/fuel gauge its only only reading from the 1st o2 sensor ( i know its pointless but lets stay on topic plz ) which is only reading from 1 pipe from the header.

if i really think about it i think my intake hasn't been sucking in air that i remember hearing in the last day or 2... which could mean the MAF wire is messed up, which i'm guessing would explain y i'm reading that its so rich? i never did extend it but since i had it as a SRI i never thought it would be a issue, i'm going to check tomorrow any advice what i should look for specifically in the MAF wire besides a ripped wire? or any other suggestions?

JonsMazda
01-25-2010, 08:08 AM
Try disconnecting battery first (-) and reconnect it. See what happens.

Donutz
01-25-2010, 08:47 AM
Get the code pulled and go from there. It could be anything. Did you recently fill up with gas? If not, I'm leaning towards to o2 sensor, but only because mine went out during the summer and we both have i/h/e.

blankets3
01-25-2010, 09:35 AM
nah gas is at least 3 days old, im going to open her up and look at the Maf wires and the front o2 sensor and than remove that battery, if its still on im going to have to drive it down to get looked at which is okay since i have to get my oil changed ne ways.

Dave_The_BMXER
01-25-2010, 09:40 AM
We have the same exhaust setup basically and I have a blinky (useless) light A/F gauge as well.

My CEL goes on and off all the time. I never really worry about it too much as whenever I go to check it its off lol