check engine light and the battery light
 

I have a 2006 Mazda 3i with 14000 miles on it. I turned on my car and it started to ride a little rough took it into mazda they read the code P0113 and said it was my cold air intake and charged me for looking at it because it was an after market part. They then said it was the alternator and so they kept my car for 3 days to replace it and the light was still on so they said i needed to replace my intake wit the stock so i did and the code is still on i re set it like 100 times but it still keeps coming back and im tired of takin it to mazda cause they dont know what they are talking about can anyone help me out. I also replaced the mass air flow sensor.

dang that sux.......... did you check the 02 sensors

where is the o2 sensor at...im not smart with cars that much just learning...

as for the battery light make sure the terminal is connected tightly...if it is check your stock groung point make sure its not frayed, stripped, or penetrated by anything.....aslo do you have an aftermarket sound system???

idk i just got mine on monday but im sure someone on here will know....but that is a possability......did they tell you what the code was??? or just what they thought the problem was

yes i have 3 mtx 10's with a 1800 watt amp...

^^do you have a capacitor???? what kind of battery

stock battery and no cap...and code P0113 im at the dealership rite now because they wanted me to bring my car back in with the stock intake in so i did and now they are looking at it..

you need to more than likely get a cap and it should help a lil bit upgrade your factory ground and or upgrade battery the intake has nothing to do with battery unless its hitting the terminal...

the problem was solved the wire comming from the ecu to the air flow sensor was tore inside the shield so they replaced the wire...finally...

that would do it...lol well good to see that you got the problem solved