New here and need help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mandys13 · 12-14-2005, 08:07 PM

Hello my name is Amanda. I just picked up my first car it's pretty stock, but it is a 90 240sx with gp sport body kit, tein coilovers, magnaflow exhaust, act clutch, and 17" 5zigen fn01r rims. The problem I'm having is the car idles funny. It will dip and almost die but save itself occasionally. Most of the time I have to pop the clutch or restart it. I popped the hood to see if I could find out what was wrong because the guy who sold it to me said that the mas was bad. I looked at the mas, and coming from the same wire loom are 2 sensors or something that aren't plugged into anything. One of the plugs says SJD...I don't know what these are, or where they go, but I think that it might fix the idle problem. any input would help, thanks a lot.
I'll try to put up pictures tomoorow.

infinitexsound · 12-14-2005, 08:49 PM

sounds like that guy said MAF not MAS, but thats just me

Ghettokracker71 · 12-14-2005, 08:56 PM

What you are describing sounds like what my s13 did when the MAF was killed by my K&N filter oil on my shiny new intake system...i pwned myself in that case w/my n00bness

wait,amanda!!! sweet another chick on the boards

Tenchuu · 12-14-2005, 10:03 PM

a stock S13 MAF should be pretty east to come by seeing as eceryone switches them out when they go SR with somehting a bit better. look in the FS section, or post a WTB thread. never know may luck out and find someone local that you can pick it up off of for cheap/free

beetlejuice · 12-14-2005, 10:59 PM

Quote:

Originally Posted by mandys13

It will dip and almost die but save itself occasionally. Most of the time I have to pop the clutch or restart it. I popped the hood to see if I could find out what was wrong because the guy who sold it to me said that the mas was bad. I looked at the mas, and coming from the same wire loom are 2 sensors or something that aren't plugged into anything. One of the plugs says SJD...I don't know what these are, or where they go, but I think that it might fix the idle problem. any input would help, thanks a lot.
I'll try to put up pictures tomoorow.

1) Mass Air Flow Sensor (MAFS) could be the culprit. Check voltage on MAFS and replace if needed.

2) Idle Air Control Valve (IACV) could be the culprit (on back of intake manifold, between manifold and firewall). Remove and clean with carb cleaner or replace.

3) Bad grounds in the engine wiring harness could be the culprit. Trace harness and rewire or replace.

Download a copy of the Factory Service Manual (FSM) at zeroyon.com if you haven't already.

Good luck

YakuzaS14 · 12-14-2005, 11:10 PM

u might have a vacuum leak. actually i had the same problem in my s13 and it ended up being a vacuum leak so check ur hoses carefully for cracks before u start trowing parts at it.

kazuo · 12-14-2005, 11:25 PM

Ya sounds more like a vac leak.

PS - Post pics. kthx.

**S13SilviaGirl** · 12-15-2005, 01:03 AM

Quote:

Originally Posted by Ghettokracker71

wait,amanda!!! sweet another chick on the boards

Get off her already! haha

welcome to the boards, ur car dosnt sound that stock. Ignor the drooling guys and pic requests, and enjoy zilvia.

Nan Desu Ka?! · 12-15-2005, 03:48 AM

maybe he wanted pics of the car?....
just a thought. :P

+3 for vacuum leak. check your hoses, same thing was happening to me. replaced a few worn/cracked hoses and everything is tip top now.

oh and welcome to zilvia.

*NemeGuero* · 12-15-2005, 04:26 AM

Haha, yah.. pretty sure he meant pics of her unconnected sensors. I'm curious to see what she's talking about as well.

I too think its a vacuum leak. Do you hear any hissing with the engine running?

BTW: Welcome to Zilvia.

andrewmp6 · 12-15-2005, 05:03 AM

yeah welcome to zilvia its probably the maf its on the intake right after the air filter has a wire pluged in it

i8yourfwd · 12-15-2005, 11:39 AM

hahha... one of the nicest welcome threads i've seen on zilvia in a while...

Nan Desu Ka?! · 12-15-2005, 12:16 PM

I think it's becuase...
1. She did not mention SR, JDM, "i have a LHD 180sx". or "how do i doooorrrifto on the streets!!1one"
2. She asked a specific question.
3. She did not speak in AOLese.

*NemeGuero* · 12-15-2005, 12:30 PM

Quote:

Originally Posted by Dorifto?!

I think it's becuase...
1. She did not mention SR, JDM, "i have a LHD 180sx". or "how do i doooorrrifto on the streets!!1one"
2. She asked a specific question.
3. She did not speak in AOLese.

Word, proper forum etiquette demands respect.

i8yourfwd · 12-15-2005, 12:35 PM

Word.

Anyways... I had real bad idle problems, all I did was take the MAF connector, blew some air in it to clean it out, plugged it back in. Fixed the idle problem. Funny thing is, it fixed my friend's idle problem also when we did it to his car.

Gnnr · 12-15-2005, 02:02 PM

Quote:

Originally Posted by i8yourfwd

Word.

Anyways... I had real bad idle problems, all I did was take the MAF connector, blew some air in it to clean it out, plugged it back in. Fixed the idle problem. Funny thing is, it fixed my friend's idle problem also when we did it to his car.

Had the same experience with MAF. Those pins like to be clean.

mandys13 · 12-15-2005, 05:37 PM

Alright here it is...

Tell me what you think about it, or if you have any suggestions, sorry forgot to bring the problem pictures, I'll post them in just a minute.

infinitexsound · 12-15-2005, 05:46 PM

funny thing is that car just doesnt look right, i mean if i was in the car it would... u could be my navigator........ !! cool car, need some lower offset wheels and a tad bit lower... and then YOUD ROCK GIRL!

Irukandji · 12-15-2005, 05:50 PM

I had the same problem with my car.

Replace your cap and rotor (on distributor). Before you start spending doh on aftermarket crap, do a full tune up on our car. i.e. Sparkplugs, sparkplug wires, cap, rotor, air filter, clean out throttle body, flush out radiator, bleed brakes+clutch etc etc

**S13SilviaGirl** · 12-15-2005, 06:09 PM

yepp yepp, nice car, and welcome! Hopefully the guys can help you fix your problem.

mandys13 · 12-15-2005, 06:29 PM

Here is my problem...

I'm going right now to go get a new mas, but if anyone knows where these plug in please help me out, thanks a lot!

*NemeGuero* · 12-15-2005, 06:43 PM

Damn, its hard to tell from those pics.. but that looks like some hacked up wiring to me.

I'd compare with any other 240s in your area to see correctly where everything goes. That last plug looked like the CAS for the distributor.. but like I said, its kinda hard to tell.

infinitexsound · 12-15-2005, 07:51 PM

yeah looks like the plug for the cam angle sensor(cas), u might wanna check out the MAF (not mas) tho check the pins , if its dirty that might be ur problem...stupid connections i tell u... anyways ur hand should be dirty not clean.... please clean up that engine bay seriously it looks horrid..

*NemeGuero* · 12-15-2005, 07:56 PM

In fact, that looks like a really old, if not wrong, distributor...
Mine looks nothing like that design/shape.. which would explain why some connectors aren't connected?

infinitexsound · 12-15-2005, 08:04 PM

thats the thing with swaps......... i dont know the past history with that car... but stating this as the situation... started as a sohc, guy dropped in a de but had a s14 ka harness but had a s13 de dizzy.. that could be it... tomorrow when theres light outside ill pop my hood and check out the front harness for yah and let yah know what goes to what...

mandys13 · 12-15-2005, 09:50 PM

Quote:

Originally Posted by infinitexsound

thats the thing with swaps......... i dont know the past history with that car... but stating this as the situation... started as a sohc, guy dropped in a de but had a s14 ka harness but had a s13 de dizzy.. that could be it... tomorrow when theres light outside ill pop my hood and check out the front harness for yah and let yah know what goes to what...

The guy who sold me the car said that he did a new motor put in about 40k ago and that's all he told me about it, so I don't know, you might be right. If you could check that out tomorrow, let me know, I would appreciate it a lot.

And thanks everyone for the help and input, if you have anything else you think would help, please let me know.

*NemeGuero* · 12-15-2005, 09:52 PM

Can you call him and ask him?
It'd make trouble shooting a lot easier if we knew the wiring harness that's in the car, the distributor in the car, etc..

mandys13 · 12-15-2005, 09:57 PM

Quote:

Originally Posted by NemeGuero

Can you call him and ask him?
It'd make trouble shooting a lot easier if we knew the wiring harness that's in the car, the distributor in the car, etc..

Yeah I'll give him a call tomorrow and then let you guys know what he said.

Ghettokracker71 · 12-15-2005, 10:26 PM

whoaoo check out those girl hands

Just kidding:-D . The car looks great in the pics,need some sidemarkers though! Personally I went with the ML320 sidemarkers,so fucking bright and easy. Anyway,welcome to the board. Hmm.hissing sound means vaccume leak,eh? My 240 started making a really loud hissing since I put the intake on when I turn the motor off,and theres a really slight hiss when its running...hmm...

***S14DB*** · 12-15-2005, 10:54 PM

Yeah, That harness has been hacked up. Looks like a bad SOHC to DOHC swap. You ether need to grab a 91+ FSM and start tracing wires or get a DOHC harness.

12-14-2005, 08:07 PM	#1
mandys13 Join Date: Dec 2005 Location: america Age: 36 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	New here and need help Hello my name is Amanda. I just picked up my first car it's pretty stock, but it is a 90 240sx with gp sport body kit, tein coilovers, magnaflow exhaust, act clutch, and 17" 5zigen fn01r rims. The problem I'm having is the car idles funny. It will dip and almost die but save itself occasionally. Most of the time I have to pop the clutch or restart it. I popped the hood to see if I could find out what was wrong because the guy who sold it to me said that the mas was bad. I looked at the mas, and coming from the same wire loom are 2 sensors or something that aren't plugged into anything. One of the plugs says SJD...I don't know what these are, or where they go, but I think that it might fix the idle problem. any input would help, thanks a lot. I'll try to put up pictures tomoorow.

12-14-2005, 08:49 PM	#2
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	sounds like that guy said MAF not MAS, but thats just me __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

12-14-2005, 08:56 PM	#3
Ghettokracker71 Post Whore! Join Date: Nov 2003 Location: Don't look now... Age: 38 Posts: 3,327 Trader Rating: (0) Feedback Score: 0 reviews	What you are describing sounds like what my s13 did when the MAF was killed by my K&N filter oil on my shiny new intake system...i pwned myself in that case w/my n00bness wait,amanda!!! sweet another chick on the boards Last edited by Ghettokracker71; 12-14-2005 at 08:57 PM.. Reason: Fucking apple laptop

12-15-2005, 03:48 AM	#9
Nan Desu Ka?! Zilvia FREAK! Join Date: Feb 2005 Location: San Jose, CA Age: 38 Posts: 1,124 Trader Rating: (0) Feedback Score: 0 reviews	maybe he wanted pics of the car?.... just a thought. :P +3 for vacuum leak. check your hoses, same thing was happening to me. replaced a few worn/cracked hoses and everything is tip top now. oh and welcome to zilvia. __________________ Norcal-240sx.net

12-15-2005, 04:26 AM	#10
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	Haha, yah.. pretty sure he meant pics of her unconnected sensors. I'm curious to see what she's talking about as well. I too think its a vacuum leak. Do you hear any hissing with the engine running? BTW: Welcome to Zilvia. __________________

12-14-2005, 10:03 PM	#4
Tenchuu Post Whore! Join Date: Apr 2004 Location: Oregon Age: 42 Posts: 2,474 Trader Rating: (8) Rides Gallery: Tenchuu Feedback Score: 8 reviews	a stock S13 MAF should be pretty east to come by seeing as eceryone switches them out when they go SR with somehting a bit better. look in the FS section, or post a WTB thread. never know may luck out and find someone local that you can pick it up off of for cheap/free

12-14-2005, 11:10 PM	#6
YakuzaS14 Zilvia Member Join Date: Oct 2005 Location: CA Posts: 167 Trader Rating: (0) Feedback Score: 0 reviews	u might have a vacuum leak. actually i had the same problem in my s13 and it ended up being a vacuum leak so check ur hoses carefully for cracks before u start trowing parts at it.

12-14-2005, 11:25 PM	#7
kazuo Post Whore! Join Date: Aug 2002 Location: Posts: 2,762 Trader Rating: (3) Feedback Score: 3 reviews	Ya sounds more like a vac leak. PS - Post pics. kthx.

12-15-2005, 05:03 AM	#11
andrewmp6 Zilvia Junkie Join Date: Nov 2005 Location: kentucky Posts: 376 Trader Rating: (0) Feedback Score: 0 reviews	yeah welcome to zilvia its probably the maf its on the intake right after the air filter has a wire pluged in it

12-15-2005, 12:16 PM	#13
Nan Desu Ka?! Zilvia FREAK! Join Date: Feb 2005 Location: San Jose, CA Age: 38 Posts: 1,124 Trader Rating: (0) Feedback Score: 0 reviews	I think it's becuase... 1. She did not mention SR, JDM, "i have a LHD 180sx". or "how do i doooorrrifto on the streets!!1one" 2. She asked a specific question. 3. She did not speak in AOLese. __________________ Norcal-240sx.net

12-15-2005, 05:37 PM	#17
mandys13 Join Date: Dec 2005 Location: america Age: 36 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	Alright here it is... Tell me what you think about it, or if you have any suggestions, sorry forgot to bring the problem pictures, I'll post them in just a minute.

12-15-2005, 05:46 PM	#18
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	funny thing is that car just doesnt look right, i mean if i was in the car it would... u could be my navigator........ !! cool car, need some lower offset wheels and a tad bit lower... and then YOUD ROCK GIRL! __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

12-15-2005, 05:50 PM	#19
Irukandji Post Whore! Join Date: Jul 2004 Location: Compton Posts: 4,268 Trader Rating: (0) Feedback Score: 0 reviews	I had the same problem with my car. Replace your cap and rotor (on distributor). Before you start spending doh on aftermarket crap, do a full tune up on our car. i.e. Sparkplugs, sparkplug wires, cap, rotor, air filter, clean out throttle body, flush out radiator, bleed brakes+clutch etc etc

12-15-2005, 06:29 PM	#21
mandys13 Join Date: Dec 2005 Location: america Age: 36 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	Here is my problem... I'm going right now to go get a new mas, but if anyone knows where these plug in please help me out, thanks a lot!

12-15-2005, 06:43 PM	#22
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	Damn, its hard to tell from those pics.. but that looks like some hacked up wiring to me. I'd compare with any other 240s in your area to see correctly where everything goes. That last plug looked like the CAS for the distributor.. but like I said, its kinda hard to tell. __________________

12-15-2005, 07:51 PM	#23
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	yeah looks like the plug for the cam angle sensor(cas), u might wanna check out the MAF (not mas) tho check the pins , if its dirty that might be ur problem...stupid connections i tell u... anyways ur hand should be dirty not clean.... please clean up that engine bay seriously it looks horrid.. __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

12-15-2005, 07:56 PM	#24
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	In fact, that looks like a really old, if not wrong, distributor... Mine looks nothing like that design/shape.. which would explain why some connectors aren't connected? __________________

12-15-2005, 08:04 PM	#25
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	thats the thing with swaps......... i dont know the past history with that car... but stating this as the situation... started as a sohc, guy dropped in a de but had a s14 ka harness but had a s13 de dizzy.. that could be it... tomorrow when theres light outside ill pop my hood and check out the front harness for yah and let yah know what goes to what... __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

12-15-2005, 09:52 PM	#27
NemeGuero No more nissan. Join Date: Jan 2003 Location: RAIN, Washington. Age: 40 Posts: 8,132 Trader Rating: (10) Rides Gallery: NemeGuero Feedback Score: 10 reviews	Can you call him and ask him? It'd make trouble shooting a lot easier if we knew the wiring harness that's in the car, the distributor in the car, etc.. __________________

12-15-2005, 10:26 PM	#29
Ghettokracker71 Post Whore! Join Date: Nov 2003 Location: Don't look now... Age: 38 Posts: 3,327 Trader Rating: (0) Feedback Score: 0 reviews	whoaoo check out those girl hands Just kidding:-D . The car looks great in the pics,need some sidemarkers though! Personally I went with the ML320 sidemarkers,so fucking bright and easy. Anyway,welcome to the board. Hmm.hissing sound means vaccume leak,eh? My 240 started making a really loud hissing since I put the intake on when I turn the motor off,and theres a really slight hiss when its running...hmm...

12-15-2005, 10:54 PM	#30
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Yeah, That harness has been hacked up. Looks like a bad SOHC to DOHC swap. You ether need to grab a 91+ FSM and start tracing wires or get a DOHC harness. __________________ Comments should be taken as Opinions not as Statements of Fact