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  #1  
Old 04-13-2013, 07:55 PM
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Check Engine Light and Hard Shifting into 1st and 2nd After Cold Air Intake Install

So as the subject says, after my friend and I installed a cold air intake I got a check engine light and when driving it shifts hard into the gears, more noticeable when it switches from drive to reverse and first to second, and second to third. Its like a jerking feelings.

I dont know much about cars or the mechanics of it.

My car is a 2007 Chevy Cobalt 2.2L 4 door LS. The cold air intake I purchased was an Ingen brand. The reason I purchased this brand and style of intake was after doing some research for a few weeks this brand was the best when it came to fuel efficiency and fuel savings. Fuel economy is the sole reason I purchased a cold air intake vs a short ram intake.

I have been looking online for others that have had this problem or similar problems and my search has lead me here. I found some people having an issue where they also got a cel after an intake install/upgrade but none have had the hard shifting into gears as I have.

Please advice on action to be taken.

Your help and time is much appreciated.
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Old 04-13-2013, 08:31 PM
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very good chance you have excess oil on the MAF from your filter. Go to your local automotive place, and pick up some MAF specific spray...that should fix it, if not, you're out less than $10. It worked for me. STS light came on, car shifted rough, etc. same year model with a CAI system from K&N.
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Old 04-14-2013, 08:14 AM
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Quote:
Originally Posted by jones21290 View Post
very good chance you have excess oil on the MAF from your filter. Go to your local automotive place, and pick up some MAF specific spray...that should fix it, if not, you're out less than $10. It worked for me. STS light came on, car shifted rough, etc. same year model with a CAI system from K&N.
+1, be very carefully around the Mass Air Flow sensor, the oils from your fingers can dirty/damage the sensor.

Far as increasing MPG, it wont. Your cold air intake does grab air from the coolest part, but your PCM/ECU has to correct the right air/fuel mixture. So in english, it will dump more fuel to reach that 14.1 air/fuel mixture. A K&N drop in filter wouldve been a better choice for solely increasing MPG. My K&N typhoon, I lost on .5 mpg, but quickly gained it back with a cat-back exhaust.
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2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille

Last edited by 5t3alth; 04-14-2013 at 08:17 AM.
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Old 04-14-2013, 11:52 AM
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Ok I cleaned the MAF with rubbing alcohol and some Q-tips. Its 99.5% alcohol so anything left over will evaporate quickly.

As far as oily filter goes, from what I understand the Ingen filter that I bought has a dry cone so oil shouldn't get onto the sensor right? Or is there still a little bit of oil even on a dry cone?

I also disconnected the battery and waited about 15-20 mins to clear the cel. I about about to head out for a test drive to see if everything has been fixed. Wish me luck and thank you for the responses and help. I appreciate it.
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Old 04-14-2013, 12:13 PM
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If it's a dry filter, oil on your MAF won't be the problem.

Few questions to help us out. What model is the intake? What code are you getting? Are all of the connections tight and MAF installed properly?

---------- Post added at 01:13 PM ---------- Previous post was at 01:09 PM ----------

I just reread. Disconnecting the battery may do it. You usually need to do that before you start it up with the new intake on.
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Old 04-14-2013, 12:21 PM
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Originally Posted by JaskarnSidhu View Post
Ok I cleaned the MAF with rubbing alcohol and some Q-tips. Its 99.5% alcohol so anything left over will evaporate quickly.

As far as oily filter goes, from what I understand the Ingen filter that I bought has a dry cone so oil shouldn't get onto the sensor right? Or is there still a little bit of oil even on a dry cone?

I also disconnected the battery and waited about 15-20 mins to clear the cel. I about about to head out for a test drive to see if everything has been fixed. Wish me luck and thank you for the responses and help. I appreciate it.
Good job man. The dry and oil based cone filters dont make any difference in our cars. I take it you didnt hear back in 2005, a woman went out of her way and tried to sue K&N, GM, and the company who sold her the intake.


Long story short, She took all of them to court since GM dealership told her that the intake was the cause of the Mass Air Flow to throw a code. She then went after K&N to pay for the damages (new MAF and OEM intake) for GM claiming its their fault for the oils inside the cone filter. K&N representative quoted "Our oils that we use on our filters will not affect the Mass Air Flow Sensor reader. You can over oil it and it will not throw any CEL code at all. We have been doing this type of research ever since the fuel injected engine was available to the residential/commercial usage. The code given on your car is from a bad part."

After all of this occured, K&N was good to go, free of charges, GM dealership had to pay for time loss of transportation, vehicle expenses, and rental car reimbursement.

So, enlighten of that, you can over oil your filter with the K&N filtercharge all you want and it will not affect the MAF. The oils are different that K&N use.
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2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
  #7  
Old 04-14-2013, 05:15 PM
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I'll vouch for no increase on my CAI in terms of MPG. I haven't had many issues with my cobalt, just a daily driver for me with next to no "mods" on it, but I did have this same thing happen on one occasion and also had to get the steering assist replaced. It's no Honda or Toyota but I hope to squeeze the most miles out of it I can. If you were to have it dyno'd and pay a little money to have it tuned, you may pick up the gas mileage but it would take a good while for that to offset your savings in gas.
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