Hey guys i went to Start my car today and i cranked it and it immeditaly Shut off... What can be wrong. i have headers on the CAR.. so my o2 are just hanging but even with a bad MAF arent you able to Start it..

 

Bump i pulled Code p1121 ETC ACTR. Something with the Actuator. do I have to replace the throttle body??? I also Pulled P0174 System Lean Bank 2 but thats because of the headers..

 

Try disconnecting the MAF sensor and cranking the car that would tell your if your MAF sensor is bad. I had a similar problem I would crank the car and it would shut off but only after driving for a while, never happened on a cold start. But that would be my first suggestion to check the MAF.

Goodluck.

 

Ooh, throttle actuator. Yeah, most likely the whole TB. It wont let your car start because it can attain a reading from the throttle and its a safety so it doesnt fire it up at WOT when there's no oil pressure.

 

I would try MAF first no hurt in doing so but my guess is TB as well

 

try cleaning out the maf first, then clean out the throttle body. Clean the throttle with a wet rag not by spraying **** in there, just clean the area around the butterfly valve really well

 

cleaned that throttlebody recently? forced open that butterfly?

 

Have you recently done anything to the intake, manifold area? If so, you might want to check fro a vacuum leak.

 

what year of the car?

 

He's got an 02 or 03.

 

Sounds like it is something else, but have you checked if your security light is going solid when you try and start it. If so you have a NVIS problem. I just had that problem and it allows the car to crank and fire for a second some of the time but then immediately shuts it down. (in normal operation the security light should go out when you start the car)

 

It's not an NVIS problem because it actually starts, just doesn't stay on.

 

YEa.. I havent touched the IM either... it started the other day... its just been sitting in the drive way cause i had bought a GS recently... and my cv joints are gone as well.... its an 2003 with SSIM and HEaders... i also removed the GAB like 3 months ago and put it back to Stock... I called Nissan they said the TB's have a problem and its 140 for a remanufactured TB
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