Dirty Mass Ar Flow Sensor
Sounds like you have a dirty mass air flow sensor.
Here is how to clean it.
1. Remove battery negative cable.
2. Disconnect Air Temperature Sensor connector, the (ATS) is located in the air inlet tube, the air inlet tube is the flexible rubber tube that connects from the air cleaner box to the throttle body, do not remove the ATS from the air inlet tube.
3. Loosen the steel band clamp from the air box side and from the throttle body side.
4. Remove air inlet tube and set aside.
5. Now you will be able to see into the throttle body, using a flashlight, you will be able to see into the throttle body inlet, look for dirt, oil or other debris on the filter screen and on the inside of the throttle body inlet.
6. Purchase an aerosol can of CRC Mass Air Flow Sensor Cleaner From your local auto parts store.
7. Do not use any other cleaners or they will permanently damage the mass air flow sensor.
8. Do not remove the mass air flow sensor from the throttle body.
9. Spray a generous amount of CRC into the mass air flow sensor inlet and into the throttle body inlet.
10. Allow up to 20 min. for the spray to evaporate and dry.
11. Reassemble.
12. Connect negative battery cable last.
The K&N filter is an oil impregnated filter, oil droplets are weeping from this filter and are coating the electrical contacts in the mass air flow sensor contacts, this in turn sends an incorrect sensor reading to the cars computer, then the cars computer sends incorrect instructions to your vehicles different control systems ( fuel / ignition ).
hope this helps
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