Trouble with 2.7L CAI

[Mike Borowski]

Please don’t turn this into a discussion about CAI’s being worth it or not. I have the aFe installed on my truck. Had it for about 6 months and everything was fine then I got a CEL. Dealer replaced my MAF. Now another 6 months later or so I am getting AWFUL gas mileage and a CEL. 

 

Any thoughts?  When I don’t have the CEL I like the CAI, it makes the truck sound a little more aggressive but I’m thinking it’s not worth the hassle. 

[CamGTP]

What code is it throwing?

 

Not knowing the code makes is rather difficult to make a suggestion on the problem.

[Mike Borowski]

I don’t have a reader, tomorrow (today) is Christmas I’m going to have to go to Autozone Sunday. 

[M1ck3y]

Do you have a dry filter or a oiled filter?

 

If your maf has failed twice and you have a oiled filter; I think it's safe to assume the maf is being contaminated with oil.

 

If you have a dry filter 

 

 

Edited December 25, 2021 by M1ck3y

[Anacortes Army Guy]

As the previous poster stated, if the CAI uses an oiled filter, then oil could be contaminating the MAF.  I'd suggest getting a can of MAF cleaner (not brake or carburetor cleaner), available in almost any auto parts store, and carefully clean the MAF sensor to see if that clears up the issue.  As an aside, before I had the GM performance CAI installed on my truck I was considering the Cold Air Inductions CAI that uses an oiled filter.  I remember the company's instructions for oiling their filter, and they were very specific as to the procedure to use, notably letting the filter sit upright for at least 24 hours after oiling to let any excess drain off before installing it to prevent contaminating the MAF.  Of course this is all moot if your CAI uses a dry filter.

[Mike Borowski]

So like I said, the dealer replaced my MAF about 6 months ago. I recently got another CEL (the reason for this post). I put the intake back to stock and the CEL is still there. The code says bad EVAP Purge Valve. 
 

Theres a YouTube video of a guy with a 2.7 replacing his and a few comments saying their 2.7 had this issue. Taking it to the dealer Tuesday since it’s under warranty. Sigh I don’t think it’s related to the AFE Intake but I’m going to stay stock to be sure after they replace the Purge Valve. 
 

Sucks because I liked the sound of the intake.