Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - revs fine cold.when warm hesitation from 3.5k and up

WILDACEX187 · 09-16-2005, 12:49 PM

this is not for me but actually for a friend. this problem has been going on for a while and i've been looking at thread after thread on wat the hell is going on. ok well here goes. his car has a s13 blacktop. its running on a sohc maf. stock everything except for exhaust and arc sidemount. ecu was throwing a maf code but changed maf and now no codes. we've checked plugs, changed o2 sensor. maf was changed 3 times. we're stumped because the engine revs fine without hesitation or anything all the way but when it warms up to operating temp it starts to run super rich and hesitates as soon as it gets past 3500 rpm. wat can be wrong?

09-16-2005, 12:49 PM	#1
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4)	revs fine cold.when warm hesitation from 3.5k and up this is not for me but actually for a friend. this problem has been going on for a while and i've been looking at thread after thread on wat the hell is going on. ok well here goes. his car has a s13 blacktop. its running on a sohc maf. stock everything except for exhaust and arc sidemount. ecu was throwing a maf code but changed maf and now no codes. we've checked plugs, changed o2 sensor. maf was changed 3 times. we're stumped because the engine revs fine without hesitation or anything all the way but when it warms up to operating temp it starts to run super rich and hesitates as soon as it gets past 3500 rpm. wat can be wrong? __________________ SR POWA COUPE LUVVV!!! Last edited by WILDACEX187; 09-16-2005 at 01:34 PM..