I brought my car into the mazda dealership cause my check engine light came on. They said the reason was due to my aftermarket cold air intake. Somethin about the mass air flow sensor. I dont know much about this stuff. Should this be a problem? Has anyone else had this problem?

 

the only time I have ever hear this problem was with the K&N type 1 (which is the one I have.) but that is not a "cold Air" kit. jsut a short ram. they fixed this problem with the type 2 by putting a screen in the air path.

I have not heard of this problem with other intakes though.

and for the record, I have never had a problem with my K&N. I love it.

 

I know of someone who has a problem with their AEM intake.

 

We have seen this problem with AEM as well. Usually a fault for the IAT sensor which is part of the MAF.

 

what intake do you have?

 

I have the aem. They did mention that it was a problem with the MAF. Is this a problem caused by AEM, or was my intake not installed properly. I've had it for a year and all of a sudden this problem comes up. Does that make sense?

 

More importantly, is this doing damage to my engine, or is the computer just not getting some sort of signal causing the light to come on?

 

If the light comes on after you installed the intake, check that the vacuum supply for the old intake is properly capped off.

The supply is under the throttle body, towards the front. If it is sucking air in, it will screw up your long and short term fuel trims, cause a rough idle, and throw a CEL.

S

 

Ill have to get someone to check that out for me cause I dont know anything about this stuff. And what is a CEL? I know this is probably a stupid question, but bear with me. And thanks for the input.

 

CEL = check engine light

 

Is your CAI an oiled type? (like the K&N)

Oil sometimes gets swept on to the air sensor, screwing with the readings.

S

 

Do you have any loss of power????? If you don't have the filter system in tight then it will throw off the MAF sensor causing the check engine light to appear........Check the intake it self for leaks and if thats not it, check for an obstruction to your throttle or loose connections.........if that ain't it, run a diagnostics.

 

I never cap mine, cuz K&N never said anything about it. I always always wonder why is that little tube has no filter and its sucking air in. but I've read somewhere that its there to help to save fuel ? (I think it was one of the RotaryGod's thread)

Should I take the tube off and put some tape on ?