OK this morning i noticed when ever i step on the gas the car would(cant relly explain this but here i go ) it was like act like its humping sumthing. it like it speeds up for a second and stops and keep doing that. unless i gently( like extra gental) step on the gas pedal. i also replaced the fuel filter yeasterday. this also happned when i cleaned the throttle body but it went away after like 5 mins of driving at low reves. but this is taking even longer.
some one pleazee help meee.... thanksss

 

HAHA your description is funny as hell... acts like its humping something, haha

hm... maybe your MAF is dying... or maybe check your intake hoses and fuel pressure

 

Dont forget to change pcv valve. Made a noticeable diff to me.

 

PCV valv? ermm must look for this..

 

or count i have tighted the screws extra tight causing the openings to get smaller and so less fuel goes throu?.

 

it wassss it wassss thanks for the help. but can the PCV valv help with that. what exactly is its job? (sorry for the newbi questions but this is how i lerns.

 

check your o2 sensor with a voltmeter, my car used to do the same thing

 

and where do i find the 02 sensor?

 

I had a similar problem in my 1992 SE... It turned out to be the coil packs... maybe get a friend with good coil packs and swap them in and see if that fixes it...

 

Timing could of slipped if it's a vg

 

nope i have a 93 Se and aym the only one with a 93 se. none of my friends have one. aym the only one with a /\/\ /-\ X | /\/\ /-\.

 

on the y pipe in front of the catalytic converter.
if it has over 60k on it replace it PERIOD!

 

Did you find the problem?

The most likely cause is going to be MAF or coil packs, although those aren't the only possibilities.

My car stalled/bucked (humped something ) on acceleration and it turned out that one of my rear coil packs was bad. I swapped in a lot of parts including ECU, cam sensor, ignitor, o2 sensor, throttle position sensor and MAF in trying to find the cause before I replaced the coil packs.

A lot of guys with VG engines have had their MAF or MAF harness cause this problem. It doesn't seem to occur as much with the VE for some reason. I also read where the cam position sensor caused stalling/bucking, but that was on a google search and as far as I know, no one on .org has verified this to happen.

I talked to a Nissan Tech a few months back and he said using non-OEM style spark plugs can also cause problems like this, particularly Bosch plugs.

When your o2 sensor craps out, you usually start getting worse gas mileage. I think some guys were getting around 200 miles to a tank, then by just replacing the 2 sensor it jumped up over 300 miles to a tank. I have yet to read where that caused anyone's car to stall or buck, however. Internetautomart is right. It should be replaced if it hasn't been in the last 60k.

 

yeah i get poor gas milage i got like 90 miles on like half a tank. but any way ayma newbi. so is replacing the 02 sensor A job for me. if ther is s write up for it then i can prolly do it. i should invest in a FSM.