Newbie here, need help, maf related? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

fccs · 02-20-2010, 05:35 PM

K I got a 1991 240sx with the ka24 engine. Runs good and healthy..but it wont rev past like 5000, maybe 5200 something like that, its as if it hits the rev limiter? I have heard it's MAF related and went to check my maf, it seems to be nice and clean but the maf has 4 male connectors on, where the plug has 3 female connectors. Would this cause the problem? Any help would be appreciated, thanks

R_G · 02-20-2010, 07:36 PM

Look for at the fsm for the wiring diagram. Im on my phone so i can't post link to it but it should be easy to find. If it's like the ka24d the harness connector has 3 wires and the maf has 4 pins. Im not to sure on the single cam.

fccs · 02-20-2010, 08:22 PM

Ok now I hear idk its like hitting the rev limiter at like 5200 or something in every gear. I don't get whats wrong

R_G · 02-20-2010, 09:30 PM

any dtc's(check engine lite on )

omgRWDgoodness! · 02-20-2010, 09:56 PM

Looks like you got that ultra-rare "launch control" factory option. Such a thing was still somewhat experimental back then, fresh out of the prototype stage. Consider yourself lucky, that's like winning the lottery.

R_G · 02-20-2010, 10:47 PM

Quote:

Originally Posted by omgRWDgoodness!

Looks like you got that ultra-rare "launch control" factory option. Such a thing was still somewhat experimental back then, fresh out of the prototype stage. Consider yourself lucky, that's like winning the lottery.

.....

fccs · 02-20-2010, 10:59 PM

um what.... yea anyways.. No no check engine light on. I'm going to look into the 5th gear sensor or something? another post said it might have went and it may think every gear is 5th gear so its limiting it at that.

omgRWDgoodness! · 02-21-2010, 11:05 AM

*sigh* Nevermind...

fccs · 02-21-2010, 01:03 PM

Does anyone have any answers, every post I find has a different solution it seems. Every gear, even neutral or with clutch in stops at 5100 5200 rpms around there as like a rev limiter. What the hell is the fix?

Ceepo · 02-21-2010, 01:39 PM

Clean your maf, check your timing, any vacuum leaks, fuel filter, fuel pump(pressure), start fixing shit and checking things man, this is zilvia, not spoon feed me and tell me how to fix my car, i dont mean to be a jerk but i get annoyed at all the newb questions we get asked daily/weekly on this forum, we are willing to help, but you have to help yourself first man, go check things and get back to us...

fccs · 02-21-2010, 04:10 PM

Yea I fixed it. it was the 5th gear sensor, I unplugged it and its all fixed now. I don't know how 20years later and everyone doesnt know what this problem is..seriously it took me 1minute to fix it guys, how is this not posted here? lol

shiftdrift · 02-21-2010, 04:12 PM

that's not the correct way to fix it?

02-20-2010, 05:35 PM	#1
fccs Join Date: Feb 2010 Location: pa Age: 38 Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	Newbie here, need help, maf related? K I got a 1991 240sx with the ka24 engine. Runs good and healthy..but it wont rev past like 5000, maybe 5200 something like that, its as if it hits the rev limiter? I have heard it's MAF related and went to check my maf, it seems to be nice and clean but the maf has 4 male connectors on, where the plug has 3 female connectors. Would this cause the problem? Any help would be appreciated, thanks

02-20-2010, 09:56 PM	#5
omgRWDgoodness! Zilvia FREAK! Join Date: Jul 2009 Location: Palm Beach Gardens, FL Age: 34 Posts: 1,498 Trader Rating: (48) Feedback Score: 48 reviews	Looks like you got that ultra-rare "launch control" factory option. Such a thing was still somewhat experimental back then, fresh out of the prototype stage. Consider yourself lucky, that's like winning the lottery. __________________

02-21-2010, 11:05 AM	#8
omgRWDgoodness! Zilvia FREAK! Join Date: Jul 2009 Location: Palm Beach Gardens, FL Age: 34 Posts: 1,498 Trader Rating: (48) Feedback Score: 48 reviews	sigh Nevermind... __________________

02-21-2010, 01:39 PM	#10
Ceepo Nissanaholic! Join Date: Jan 2008 Location: Cedar City, Utah Posts: 2,007 Trader Rating: (9) Rides Gallery: Ceepo Feedback Score: 9 reviews	Clean your maf, check your timing, any vacuum leaks, fuel filter, fuel pump(pressure), start fixing shit and checking things man, this is zilvia, not spoon feed me and tell me how to fix my car, i dont mean to be a jerk but i get annoyed at all the newb questions we get asked daily/weekly on this forum, we are willing to help, but you have to help yourself first man, go check things and get back to us... __________________ TW: http://zilvia.net/f/cars-sale/390459...d9s-coils.html

02-20-2010, 07:36 PM	#2
R_G Zilvia Junkie Join Date: Feb 2010 Location: Monterey Bay/Watsonville Posts: 388 Trader Rating: (0) Feedback Score: 0 reviews	Look for at the fsm for the wiring diagram. Im on my phone so i can't post link to it but it should be easy to find. If it's like the ka24d the harness connector has 3 wires and the maf has 4 pins. Im not to sure on the single cam.

02-20-2010, 08:22 PM	#3
fccs Join Date: Feb 2010 Location: pa Age: 38 Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	Ok now I hear idk its like hitting the rev limiter at like 5200 or something in every gear. I don't get whats wrong

02-20-2010, 09:30 PM	#4
R_G Zilvia Junkie Join Date: Feb 2010 Location: Monterey Bay/Watsonville Posts: 388 Trader Rating: (0) Feedback Score: 0 reviews	any dtc's(check engine lite on )

02-20-2010, 10:59 PM	#7
fccs Join Date: Feb 2010 Location: pa Age: 38 Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	um what.... yea anyways.. No no check engine light on. I'm going to look into the 5th gear sensor or something? another post said it might have went and it may think every gear is 5th gear so its limiting it at that.

02-21-2010, 01:03 PM	#9
fccs Join Date: Feb 2010 Location: pa Age: 38 Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	Does anyone have any answers, every post I find has a different solution it seems. Every gear, even neutral or with clutch in stops at 5100 5200 rpms around there as like a rev limiter. What the hell is the fix?

02-21-2010, 04:10 PM	#11
fccs Join Date: Feb 2010 Location: pa Age: 38 Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	Yea I fixed it. it was the 5th gear sensor, I unplugged it and its all fixed now. I don't know how 20years later and everyone doesnt know what this problem is..seriously it took me 1minute to fix it guys, how is this not posted here? lol

02-21-2010, 04:12 PM	#12
shiftdrift Nissanaholic! Join Date: Nov 2009 Location: indiana Age: 34 Posts: 2,242 Trader Rating: (42) Feedback Score: 42 reviews	that's not the correct way to fix it?