Nissan 240SX Forums banner

I Need some assistance!

1.4K views 21 replies 7 participants last post by  240sideways  
#1 ·
Whats up guys as u all know i finally got my S13 sat. (pics will be here Sunday) and i really like my car everything is good about it. but with every used car it has the one thing wrong. I seached but nothing worth reading came up. well,

when it is in gear or a rpm other than idol. when it comes off that rpm falling towards idol sometimes it will drop to 100 rpm and it struggles to get to 700 rpms or it will konck out.
Example: Driving towards red light 2nd gear 3K put the clutch in the rpm falls towards idol and it ether koncks out or it goes to 100 and struggles to get to 700 rpm. one or the other happens
:12dunno
It happens more fequintly 5 min after start up but happens even when running for 30+ mins. I'm thinking fuel pump or fuel reg. maybe even alternator or battery any help will be praised upon.
 
#3 ·
k, well i could be way off, but i think i'm sorta close here... this sucks too cause i just covered this in school (if you're problem is what i'm thinking of)
Well, I'll have to say that I think your alternator might be out, or just not very good. I guess it's more if your car doesn't start again after it's been warmed up, but i guess it's possible if your car is dying in neutral after it's been on for awhile. I'd say you have some sort of problem with keeping going. I had a problem similar to this, it was my fuel tip sensor or something. The problem was like this: My car wouldn't start very well after being warm, running hella rich, and would stutter really bad, especially starting from neutral, it would almost die while coasting at 40mph. The problem was the sensor malfunctioned and would tell the engine it wasn't getting enough fuel or something so it compensated by adding more, w/o enough air or something and like flooded the engine <=== (why it wouldn't start back up). It costed me around 130 bucks for almost 2 hours of labor and a $20 dollar piece, if i remember right. I think it's a pretty easy install if you know what you're doing. And would save you lots of money. Well good luck, hope this helps.
 
#4 ·
it doesn't die while in gear but when its come offs the gear fallin down towards idol.
 
#5 ·
but i do think its the alternator tho
 
#7 ·
what giving it to much air?
 
#10 ·
ok so i should get the vaccum lines checked. i'll do it my self so how should i do it. soapy water and look for being sucked in or what? this also maybe write but it idols perfectly once it gets there so would the vaccum leak affect the idol too?
 
#12 · (Edited)
alsome i'll try that tonight or tomorrow. i hope thats it its not that bad of a problem but its still annoying
 
#15 ·
yeah it can go in my car if you pay for it
 
#16 ·
i had similar problem with my idle and sometimes starting it when i would start it at cold. What was wrong with mine was that the lady taht had it b4 did not get a tune up done right. When i did the tune up i just changed the spark plugs, wires, cap, rotor, oil, tranny oil, and few other things but i overlooked the distributor! make sure it is in the right angle mine was not and it was not delivering enough spark only when actually driving..... well anyways check your distributor, Do your lights dim down when your car goes down to 100 rpm?? if so then it might be just that b/c mine would go down to like 300rpm and the lights would dim and when i hit the gas the idle would go down a lil and then go up.... weird huh. Well hope this helps you good luck.
 
#17 ·
how off was ur angle just a hair or off quit ah bit? and how did u tell just by looking at it? is it so odveous that you can't miss it?
 
#18 ·
not too much all it took was like 1 or 2" dont member too well it was a while ago...
 
#19 ·
but how call u tell is there little dots or something i've only seen the distributor's for old muscle cars b/c my old miatas had a coil for each wire so havn't looked into many distubtors so i wouldn't know what i'm looking for
 
#20 ·
well we just moved it around and turned the car on and just from moving it a lil bit we could tell that the car was getting better spark just by how the car started soo smoothly and then when you rev it the rpm goes straight up smoothly! and the lights also would not dim anymore and it would lidle at like 700 or a lil higher.
 
#21 ·
basically we were just playing with it and das it.....
 
#22 ·
ok