yeah, just un-plug it and see if it helps... other wise that seems like your maf

 

oh aite, but is there a way to test the maf...i mean i checked the conector for voltage and continuity and its all good...if i unplug the maf...all it does it does not let me rev past 2.5 k...and it stutters u thnk the maf mite be goin bad..not completely bad but not working properly...cuz my idle is almost perfect

 

any other ideas guys?

 

Oh yeah i remember that effect on mine. Quick question, does your car hesitate to accelerate a bit more when you're turning? If thats the case then im pretty sure you need an LSD because that's what mine needed. I now have a LSD and turns and accelerates perfectly fine.

 

how come u didnt mention that u changed the fuel filter maybe thats the problem..:12dunno

 

i agree, though it would have to be pretty damn clogged to get that kind of fuel cut...

 

oh no...thats the first thing i did wen i got my 240 i put the z fuelfilter..i forgot to mention it...umm could it be my oxygen sensor?...damn maybe i have a hole in my intake mani...do u think i should pull it out and check for cracked hoses maybe replace the gaskets?

 

do u think this is a vacuum leak problem?...cuz i kinda ignored it since my idle is good...how can i check for vacuum leaks besides just lookin for it...i heard somewhere if i spray carb cleaner around the intake mani while the car is on..the car rpm will change which mean there is a leak around there......please can somebody clear me up on that?

 

were u from buddy? probably can swap out mafs to see if it would help with the bogging problems

 

i live in rockville, md....u?

 

Your problem sounds alot like the problem I was having with my SR20. I unplugged my 02 sensor and it quite hesitating, not sure if that will help you but it's worth a shot.

 

thanks for ur idea man....i ll check my o2 sensor

 

My s13 did that once. I replaced everything I could think of. Come to find out the ignition timing was off somehow. Retimed it and worked beautifully.

 

i havent checked timing but i have an idea but i dont really kno how to...i m no mechanic but i saw some tutorials that you have to look into ur pulley and read the marks but i bought the car with an aftermarket silver pulley...can somebody tell me how to?...i m gonna do some research rite now but if u know a quick way please tell me...thanks
oscar

 

240sx.org used to have the info.

 

It may be Nicoclub or whatever now.

 

yea i found some it says to race to normal operating temperature disconnect tps and attach timing light...where do i attach it to?...tps?...that s not very clear sorry for bein sucha noob..

 

i'm from dallas osal.. that sucks if u were closer i would help yea out brotha

 

ooo r u getting any check engine lights?

 

nope..i took out the ecu anyways to see if it was throwin any codes and it threw code 41..air intake temperature sensor..i ve heard it doesnt affect the car in anyway so i ignored it

 

can timing being off cause acceleration problems even thou i have good idle??...

 

1

 

Check your fuel pump again ) it is the only reason why I think you have those problems

 

i pulled out my spark plugs and they look white...which means i am running lean...i already replaced my pump and fuel filter...could it be my fuel pressure regulator??...help guys

 

it could be the injectors too...i am having an acceleration issue and i foud out i have a very slight fuel leak from the rail...i am tryin gto find a new to me rail so i can swap it out and see if it fixes the problem...does anyone have a spare SOHC fuel rail i can buy from them in the tucson phoenix area??? ill meet up to pick it up and everything....

 

well nothin changed..i adjusted timing to stock, replaced o2 sensor but nothing....oh and also i bought a used working maf for 50 bucks to see if it was my maf but nothing changed...help guys..the hesitation is really anoying but my idle is fine....could it be a weak coil?...i also noticed i have exhaust leak in my muffler...i have an apexi exhaust. any other suggestions other than my fuel pump(walbro intalled)...would help alot thanks!