On Friday I installed the K&N air charger intake kit and now it keeps throwing a check engine light immediatly. When it does this I undo the negative battery connection reset the ECU and then it will not come on for about 2-3 trips. Then when I start it on the 2nd or 3rd trip immidiatly it comes on. I have checked the instuctions and I have installed it correctly, but when I open the hood the little plastic sensor (I think it's the 02 sensor) that you have to attach to the tube is making an air pssst pssst pssst noise. Any help???

 

Try putting back your original intake. The ECU will throw a code after it records an error 3 times so resetting the ECU won't help.

 

You have installed something wrong. A number of us have installrd the K&N Aircharger with no problem.

 

yup, gotta be a hose mismatched or not snug.

but if you want to reset the ECU, why do the battery? there's a simple way to do it in the library under troubleshooting - its just a fuse - no resetting/reprogramming the radio.

 

I believe that plastic piece you are referring to is the air control solenoid valve. Before re-installing the old intake, make sure the two hoses coming out of this piece are connected properly; one should go to the air check valve (little white connection piece in the lower part of the bay) and the other should go to the lower hard line. Check your instructions steps 14-17. I hope this helps.

 

Try this link. This is a common problem. See Dark's photo's on check valve orientation (most likely problem) and my walk through on vacuum line orientation.

Utah

https://www.s2ki.com/forums/showthread.php?...enoid+air+valve

 

Hello All.
Please help.

I have just installed a K&N Intake System to my 2007/08 AP1 2.0 (UK) When it says to install the check valve and air injection pump to the upper and lower 'Hard Lines' I only have 1 Hardline, so I am not sure whether this would be the upper or lower???. The stock system had 1 hard line & 1 direct connection to the intake manifold.
Can any one help identifying which should go to the hard line, and which to the intake manifold. Must be a European thing?? I will need to extend the hose for the one that goes to the intake manifold.
In the K&N Kit it mentions a Long hose and a short hose but they were supplied the same length which doesn't help.
Urgently waiting your assistance.

Many thanks

 

Your car is a DBW model so there's no air injection. Connect the coolant lines together and the crank vent to the intake arm. Plug the air injection port on the intake arm and attach the temp sensor. It should look like this:

 

Hello Guys thanks for the response.

From Amazon.
Indeed my engine IS a Drive By Wire It also has Air Injection, but no Fuel pressure Regulator mounted on the Air Intake manifold. All images I could find show this Fuel Pressure Regulator hence my confusion. I found a drawing that showed me where the hose from the check valve and the air injection pump went, not identical to mine, but enough to make it clear which one was which.
I still had an Engine Management Light but as soon as I disconnected and re-connected the Battery this cleared . (Make sure you have Radio Code)
The difference is clearly noticeable in Power & Low down torque, if only minimal! But the Sound!!!! Wow. Certainly turns heads. Well worth the money for me anyway.