acceleration problem!!! motor or tranny??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

touge_420sx · 06-04-2009, 05:29 PM

first of all, thanks for checkin this thread and for helpin me out in advance. k, so up until a few days ago, s14 has been runnin great until recently ive had a minor problem (i hope) accelerating. Whenever I accelerate the car begins to kind of "choke" as i hit around 2800 - 3400 RPM. I mean it feels as if the car is struggling to push when i hit those revs. idle is fine, and i get no problems before 2800 or after 3400. im pretty (not 100%) sure that its engine trouble, since my tranny has no problems shifting, downshifting...like i said, its only when i go. motor is in great condition too, i baby the hell out of it!!! fluids are topped off, wires are all connected, no broken hoses, no leaks, and it starts without a hitch.......................any ideas would be well appreciated guys!!!! thanks again, hope its not the beginning of something major.

HYPNOTIK · 06-04-2009, 06:02 PM

Probly MAF related, I'd start there. If that's no go, then maybe the coilpacks.

Bigsyke · 06-04-2009, 06:03 PM

Knock sensor

DDDsquad_s13panda · 06-04-2009, 08:16 PM

check your:

clean your MAF
TB.
and vacuum lines
check your grounds on the motor, manifold and injectors. i had the same problem with my SR. i just added a thicker ground wire and problem went away, but ofcourse i unplug the positive first then pump the brakes to restart the ECU. then turn the car on after i put everything baq together.. give it about 5 mins on idle so the ECU will restart and whatnot.. good luck

touge_420sx · 06-05-2009, 09:31 AM

ha, i didnt even think about the MAF. i had a similar problem in the past with my s13 and cleaning the MAF was the solution. guess i was kinda freakin out since i had driven the car in months due to a license suspension...thanks for the help all, i'll see whats up when i check it out today

06-04-2009, 05:29 PM	#1
touge_420sx Join Date: Dec 2008 Location: Woodland Hills Age: 33 Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	acceleration problem!!! motor or tranny??? first of all, thanks for checkin this thread and for helpin me out in advance. k, so up until a few days ago, s14 has been runnin great until recently ive had a minor problem (i hope) accelerating. Whenever I accelerate the car begins to kind of "choke" as i hit around 2800 - 3400 RPM. I mean it feels as if the car is struggling to push when i hit those revs. idle is fine, and i get no problems before 2800 or after 3400. im pretty (not 100%) sure that its engine trouble, since my tranny has no problems shifting, downshifting...like i said, its only when i go. motor is in great condition too, i baby the hell out of it!!! fluids are topped off, wires are all connected, no broken hoses, no leaks, and it starts without a hitch.......................any ideas would be well appreciated guys!!!! thanks again, hope its not the beginning of something major.

06-04-2009, 06:02 PM	#2
HYPNOTIK Zilvia Addict Join Date: Apr 2008 Location: Pisa, Italy Posts: 700 Trader Rating: (3) Feedback Score: 3 reviews	Probly MAF related, I'd start there. If that's no go, then maybe the coilpacks. __________________

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06-04-2009, 06:03 PM	#3
Bigsyke Zilvia FREAK! Join Date: Jun 2008 Location: NA Age: 36 Posts: 1,342 Trader Rating: (0) Feedback Score: 0 reviews	Knock sensor

06-04-2009, 08:16 PM	#4
DDDsquad_s13panda BANNED Join Date: Dec 2007 Location: Fontana, IE. Age: 34 Posts: 550 Trader Rating: (7) Feedback Score: 7 reviews	check your: clean your MAF TB. and vacuum lines check your grounds on the motor, manifold and injectors. i had the same problem with my SR. i just added a thicker ground wire and problem went away, but ofcourse i unplug the positive first then pump the brakes to restart the ECU. then turn the car on after i put everything baq together.. give it about 5 mins on idle so the ECU will restart and whatnot.. good luck

06-05-2009, 09:31 AM	#5
touge_420sx Join Date: Dec 2008 Location: Woodland Hills Age: 33 Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	ha, i didnt even think about the MAF. i had a similar problem in the past with my s13 and cleaning the MAF was the solution. guess i was kinda freakin out since i had driven the car in months due to a license suspension...thanks for the help all, i'll see whats up when i check it out today