car jerks at randomly need help

[StereoInstaller1]

What does the tach do when it jerks?

Watch it closely, post it up.

[u3b3rg33k]

ICV shouldn't cause the car to sputter once you're at cruising speeds. If anything, it would hurt engine braking.

I'd consider checking on the crank sensor if it gets worse, otherwise, my vote is for AFM.

[scottinAZ]

air flow meter, attached to the airbox

[88e30dippin]

alright thanks i'll try the the icv first. whats the afm?

[DmcL]

i had a similar problem that turned out to be the ICV taking a crap.. might be worth swapping another if u have a spare laying around before u go diving into things like AFM and whatever else.

[scottinAZ]

AFM could be taking a crap. I did an adjustment on mine to get to fresh carbon track, and bodged it a bit. car ran like SHIT, bucking and snorting much like yours. Try a new AFM.

[88e30dippin]

okay so my 88 e30 is giving a weird issue that i can't figure out.

it runs and drives great with lots of power. randomly once in a while, if im doing either 45 or 60 (cruising speeds) around 2k or 3k rpm it will sputter a little. it would just jerk once or twice then be fine again. every time i run out of power steering (atf) fluid (my steering rack leaks) the car jerks at those times. after i fill it up it will be fine. but now its full and its still doing it. so idk whats wrong with it.

i have replaced distrbutor cap, rotor, spark plugs, m50 injectors, throttle body, and did lifter adjustment.

what could it be?