Fuel problems in a 87 zx

[Theindigo88]

Well i was driving along one day and all the sudden the car started jerking back and foruth , Once i left off the gas it stopped jerking ... If i took it up above like 3k rpm FAST then it would start jerking really bad , but if i went past 3k slowly then i was able to drive it , Well that lasted about 10 mins till the car stalled..

Come to find out the fuel pump and injectors no longer have power going to them...

They work if i take a battery directly to them.. But incar they dont work ... Fuel pump fuse is fine , And i replaced all the relays in the engine bay in the little box.

All the grounds are fine in the engine bay ...

I dont know where the problem is located .. It has me stumped ...

Any ideas ?

[evildky]

MAS? I know on the early cars the AFM would turn the feul pump on and if it got stuck or quit working the power to the fuel pump woud be cut

could also be the ECU, have you checked for codes?

[Theindigo88]

Well i do have a extra maf , But shouldent the car startwithout a maf ?

And as for checking codes , I really suck that that , Is there any write up on how to read them ?

I was looking in the nissan repair manuel but i dident understand it at all..

Thanks.