I put a cold air intake in my car last year. The cars engine light has
been on for months I recently got it fixed. I had to replace the egr
valve, and 2 o2 senors. The light was out for a few miles then it came
back on. The car code that came up is Insufficient flow this code is
still comeing from the egr valve does that mean the replaced egr valve
is not getting enough gas and if thats the case would the fuel filter
be clogged or could there be a leak in the intake and maybe not getting
enough air. Please help thanks
Clean and recharge your cold air filter, if you never had it cleaned, you can buy the recharge kit for your cold air filter, follow the instructions, if that doesn't work check your mass air flow sensor, have your mechanic clean it and test it.
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Mine did the same thing...at 42F degrees, run bad. After it warm up, it would be fine. This would only happen in the winter. It would throw a code saying it was lean in Bank 1 or 2. The issue is a contraction of the intake gasket due to the cold weather, when it contracts, it leaks air. There is a new, improved gasket now from GM, or get a Felpro from major auto stores and it will work fine. I consistently had the problem every winter, and this has fixed the problem for the last 3-4 years.
Your vehicle uses the coolant temp sensor and the intake air temp sensor to determine the engines temperature on a cold start. If one of them is dramatically different than the other it will flag a code.
Is the check engine light on?
When was the last time you had a tune-up? if recently what brand of plugs where used?
Have you noticed any hard start issues after a hot soak? A hot soak would be driving the car until fully warmed up, shutting of the engine for approximately 15 to 20 minutes, and then starting the engine again.
Youre gonna love this. when you open the hood you will see the rectangular air intake right in the front middle. there is a little plastic screw the holds the plastic air intake in place. if it is missing , once you hit about 30mph the plastic air intake will lift up and hit the underside of the hood. blocking air intake will kill all power to the engine.
2 dollar fix at dealer.
let me know if thats it!
I have the same car and had the check engine light come on for me as well.
Mine was because I put an after market cold air intake system and I took care of my filter by cleaning and replacing it when needed. If you have this or an a filter like a K&M air filter that has a bit of oil on it will coat on the O2 sensors and will eventually interfere with your O2 sensors giving your computer the wrong information like mine did and my revs went up as well. So I had to clean my 02 sensors and and reset my computer it fixes the problem or replacing the 02 sensors will of course work too but not needed. About 3-4 years then the check engine light came back on again and I went back to my normal stocked air intake and a regular filter and no more problems. I left my exhaust header on and I still have lots of power and fuel milage, so the cold air intake didn't icrease much power or fule milage... just a tad.
Having driven many BMW's for the last 15 years, my advice is to remove the cold intake and go back to the factory original, the car runs alot smoother and the fuel economy is much better. the chapest way of doing this is to buy a second hand one from ebay etc as well as buying the original MAF sensor.