BlackCloud83

02' 6.0 cold air intake, stock MAF , flowmaster 40's, walker hi- flow cats

ok, ive been having lean misfire and everything else checks out ok but i still have almost white ( lean sparkplugs )

My MAF readings at idle ( warmed up ) are .98- 1.05 lb/min which translates to 7.6 grams per second. seems kinda high for an idle to me. as i understand it should be down around 5.5 g/ sec they do go alot higher under accelleration as they should but i regularly see 20 lb/ min at 2200rpm normal????

SLP4CamaroSS

iTrader: (16)

go to your local part store and pick up a can of maf cleaner. if you have a oiled air filter sometime some oil can get on the maf and throw it off

BlackCloud83

ya , ive already done that several times with crc's MAF cleaner helped some but still isnt right. wish one of my buddys would let me swap out mafs to test

BlackCloud83

well just did a quick test and with the engine at idle and up to temp i unplugged the maf and rpms dropped briefly but not by much, not too much different ( no sputtering /popping ) it also seemed to smooth out some and on my scan tool i noted that my fuel trims were in the negative range for the first time ever ( STFT's were around -7 give or take and LTFT's were very close to zero. ) when plugged back in the rpms raised by 100rpms,

so what would everybodys take on this be??

SLP4CamaroSS

iTrader: (16)

sounds like a bad maf, i try to swap with a buddy like u said

BlackCloud83

thats what i thought !
i took it for a drive with it un plugged, smoother power but idle dropped low on decelleration ( i assume its cause its in speed density mode ) but once i was in park it picked back up to 550 rpm idle . with it plugged in the problem seems to be worse when the engine is up to temperature. guess ill be buying a new maf on monday