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Discussion Starter #1
I drive a 2.4

so question about my intake. I took it off to get work done and didnt want to effect warranty. I drove about 2 weeks without it and my car was acting up. Lose of power, car was like pulsing when at red lights. I took it in they said maybe dirty injectors or throttle. So spent 110$ to get it all clean and still the same. Put intake back on and it was even worse. Gotta press gas all the way down for it to move once pass 40 miles per hr then its fine. But when i keep a constant speed like at 75 i can feel it hesitating back and fourth. Injen says cause i switched intake and stock it messed up fuel ratio. He said put back to stock, disconnect battery drive for awhile. so it resets. Then put intake on disconnect battery and drive around. I dont know whats going on. Sorry for the long message.
 

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Without the intake the ecm has no idea how much air the engine demands. Incoming air volume is measured by the MAF. My 2.4l barely runs when I unhook the inlet.
 

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So how can i reset the computer? Or what do i have to do
Disconnecting the batt resets the keep-alive memory. It will not erase DTCs as they are kept in non-volatile memory. Is the MIL lit? Even if not, have it scanned for codes. All incoming air must pass thru the MAF tunnel. There can be no incoming air leaks.

What year is the car?
 

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Discussion Starter #5
Its a 2008. Evrything was fine till i took intake pf went to stock then put it back on. Now its running like shit.
 

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Told ya the Injen would get ya! But noooooooooooooooooooooo you wouldnt believe me!! lol

That injen requires you playing with the MAF. It wasnt damaged was it??

Make triple sure its ALL connected up correctly. Sounds like an intake leak.
Is the return line hooked up??

Disconnect battery for 15 min.....let it discharge. If you hook it back up and have the same problem run it by somewhere to read if its throwing any codes.

Might be a different unrelated problem.
 

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How do u check for a leak? Where would it be leaking?
Here's a good read:

http://www.aa1car.com/library/vacleak.htm

A crude method in a pinch is to use stick incense. But some sticks make more smoke than others. Wand it around all the connection points & see if the smoke gets drawn in. Others use carb spray cleaner & spray the joints & listen for an idle spike but it is very flammable stuff so be careful. I don't really have a handle on what you've done so all I can tell you is retrace your steps from the beginning.

If the throttle body was exposed for 2 weeks maybe something besides air got sucked in.

A $30 obd2 code reader is a great tool to keep in the glove box.
 
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