go and no go
 

i have a 91 240sx with the twin cam.problem is that when accelerating,the engine wont go over 2500rpms.then you will feel a jerking and no acceleration.you have to let off under 2500 to accelerate until you hit 2500 again.i have been told it was the maf sensor but i want to be sure.help,please!:angry:

try reading the ecu codes. yeah it could be a maf problem or your timing could be off

today i took a test light to the wires going to the maf.one wire lit up so did on the plug.i moved the wire after i reconnected it and the problem seems to be in the wires.what do you think?

i think that your right it is related to the maf. i'd check for continuety, check the maf terminal for corrosion, or a loose conection.
it's most likely a bad conection but you might aswell clean the maf sensor while your at it.