xplosive9z

2k auto gle... i changed my spark plugs, (NGK)... and today i turned my car on, the RPMs dropped slowly and the car just turned off...!?!?! also, usually the heat & gas that comes out of my exhaust is smooth and steady... but now i noticed that it "puffs"... meaning it's puffing out gas like every .5 seconds instead of the usual smooth and steady release...

what should i do?

BewstAdd1ct

run a fuel pressure test.

xplosive9z

thanks bewst...
any other suggestions?

update: i went to autozone to see the error codes from the SES light...

p0171 - engine too lean, bank 1
i put my stock intake back in... and i ordered a new MAF, i'm guessing i have to get it updated (ECU)?

BewstAdd1ct

check for intake leaks. seriously, it sound like youre running out of fuel after startup.

shurik

iTrader: (6)

Maybe you didn't put the spark plugs the right way or something like that, but who knows, you should know better then us the way you changed them.

Emaxxima

check ur intake

super6

iTrader: (5)

agree with all of above, plus cpould be one of the bank 1 O2 sensors...but that wouldnt cause the car to shut off, sounds like a maf problem, but since u just changed the plugs it may be related to that.

kam1luv

Check the throttle wire and all the connections on the ignition coil.

Mr. Ryte

Were the plugs gapped to the right specs?
I say check that first.....

Mr_Red

one way to help rule out the MAF (actually it simply rules out a sensor problem) is to simply disconnect your MAF. ITs easy to access. Without the MAF signal the car will switch to limp mode. The car should run quite fine but will not rev over 2200 or so RPM.

If it doesn't run fine, it's not your maf or O2.

BewstAdd1ct

did you ever figure out what it was? did you run fuel pressure test to eliminate that?

will it stay running if you hold the gas pedal a bit?