I seem to have MAF problems, and go into limp mode when it is raining outside......Stock air box... I dont get it. but I let it sit after it has been raining and it does fine.. any help on how I could keep it from getting wet, moist?

What makes you think it's a MAF + moisture issue?

Are you getting a CEL? What's the code? What vehicle are we talking about?

samcrored wrote:..Stock air box... any help on how I could keep it from getting wet, moist?

Is the entire vehicle stock:

Did you ever check for spark?

check the wires and coil packs?

Is the fiberboard shroud underneath the vehicle present?

Follow the troubleshooting steps in the FSM

Telcoman

Yes its present 100% stock got a p0102 code ... And it only happens when it rains.... Runs fine its just when it throws the code it runs diff because of the limp mode

its an 03 g, sedan 5at

Ok for instance .. Just now happened again it did fine i had cleared the code and ran perfect. Its snowing/raining and i went about 10 miles . Stopped at a gas station and when i cranked it up again boom same crap...only the idle was jumping all over the place this time

I'm still not convinced it's a moisture problem. Common causes for that code are:

- Faulty mass air flow sensor
- Intake air leaks
- Dirty mass air flow sensor
- Dirty mass air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor circuit poor electrical connection

The bad idle leads me to believe you have some other MAF-related issue.

Is the intake intact and secure, from the airbox to the throttle body? No openings, holes, or tears?
Is the air filter new? Check it and make sure there's not something in the airbox (saw a car at the dealer with a SNAKE in the airbox, no crap).
Have you cleaned the MAF sensor? Get the MAF cleaner from your local parts store, follow the instructions.
Check the MAF plug - Unplug it with the engine idling, wait, then plug it in again. Does the idle change? Make sure there are no strained or damaged wires.

I know this is all tedious, but that's how we isolate the issue and get you back on the road.

I hust put a new filter in i checked everything didnt clean it yet... Didnt visually look dirty... At all... Until it goes into limp mode it runs perfect! Thats what Gets me. It only idles that way after it has gone into limp mode

Also, are the 03-04 MAF the same? I was looking and the "04" MAF are cheaper than 03?? Why is that?

But, the car runs fine.......I do not get it. it isnt running bad at ....all...whatsoever. until limp and cel and slip and vdc off lights

You didn't mention the slip / VDC lights before.

That's more likely a cam position sensor. Replace both, they're not expensive. My '03 G required new ones at 50k miles or so.

You'll need this afterwards:
g35-how-to-reset-ecu-throttle-pedal-rel ... 56397.html

Check and make sure this recall has been performed: http://repairpal.com/infiniti-g35-recall-03v455000

I was thinkIng that.... But why would it throw a MAF code?

Oh yeah, today i cleaned MAF but before i did i unplugged it while it was running and it immediatley died

Because it's an intricate, fallible mixture of mechanical and electronic components. Nothing always goes strictly by the book.

Some additional info that may help: 2003-g35-w-service-engine-soon-slip-and ... 77728.html

BTW, you really need to go step-by-step. There are documented cases of water reaching the ECU, but they're rare. Worth checking, but I still think you have cam angle sensor issues.

What about the IPDM? I am going to check that later, because like I said, the MAF, looks to be fine and car died without it, so For some reason I think its throwing some random code, I dont know. All I know is 2 things 1: it started after I had tires changed and oil change. 2: seems to be when it is wet/raining.