i have a 1991 240sx 5speed, and it feels like it might have electrical problems but im not sure. If my car idles for less than a minute it starts shaking, and not jus a lil vibration, it really shakes. Also thru 1st and 2nd gear it shakes alot when i accelerate, and when im in other gears and try to accelerate the car shakes also. the only mods i have on the car so far is an exhaust system, a new cat, and headunit and sub. the reason i thought it was electrical problem was b/c my sub doesnt work anymore and the lights on my dash that are usually on (like the seatbelt, or e-brake light) turn on and off in no pattern. IF YOU THINK YOU MIGHT HAVE ANY IDEA OF WHAT THE PROBLEM IS PLEASE LET ME KNOW. this is the second 240 i have had and i dont feel like searchin for another one. thanks

 

i think u might be ur fuel rale. or ur fuel injectors. cuz my car did that so i brought it in to nissan and they flushed out my engine and gave me a new fuel rale now it works just fine. hope it helps

 

got a power cap? :/ -shot in the dark-

 

check all of the grounds! bad grounds will cause loss of power and lights to go haywire like yours.

Thats my bet, look for all of your grounds and make sure they are good! use a ohmeter to see.

Dr.

 

This is happening for my car too... I also hear a hissing sound while the engine is idle and a pretty loud one after i turn off the engine. does anyone know whats wrong?

 

where is the hissing coming from?

 

i have no clue but im gonna find out soon. well all i know is that when the engine is idle the hissing comes from the left when facing the engine. and when the the engine is turned off another sound comes from the right.

 

mine did the same thing and one of my plugs wires' was broke so i changed the spark plugs and wires and it stopped, but i still have hesitation at full throddle and at the low rpm's in low gears. once i have opened it up it runs fine. it is just the 1st split sec that i accelerate that i get the hesitation. the next thing i will be doing is new injector and rail...