SR20DET Not all Cylinders Firing

[Korea]

so i swapped an SR20DET into a 1990 S13, buuut for some reason cylinders 2 and 4 are not firing. its not the coils or the plugs. i was thinking maybe the ignitor chip but my friend said that if that was messed up than none of the cylinders would probably work. i tried searching the other forums but i could find anyone with the same problem. anyone have any ideas? id really appreciate it.

[fcdrifter20]

have u checked ur injectors

[Korea]

Yeah i did that earlier today. they are all good.

[Hashiriya415]

ECM is in fail safe mode, check basics, check the FSM, there are free downloads out there if you need them

[Korea]

fail safe mode? sorry im noob, i wouldnt have been able to get as far as i have without my friends.

[Korea]

anyone know how i can tell if its an actually blacktop ecu? the label was scratched off so i cant be sure. ive been reading up on other threads and some people that have had problems with only a few cylinders firing because their ecu was bad. i got my engine off jdm-online but im wondering if they could have sent me the wrong ecu.

[oni jake]

Just a question, how do you know the coils are good? I'm assuming you swapped the coils from different cylinders and/or tried them on another car.

If they are good, just trace the problem through the wires via test light or voltmeter. I don't have the FSM for S13 SR's but I'm 100% sure it will show the wiring diagram for your ignition system and if you're lucky, it'll have the step by step trouble diagnostic for your problem.

[Hashiriya415]

fail safe mode? sorry im noob, i wouldnt have been able to get as far as i have without my friends.

If ECM see's problems with the inputs it sends the output to only 2 cylinders

[Korea]

Just a question, how do you know the coils are good? I'm assuming you swapped the coils from different cylinders and/or tried them on another car.
yeah thats exactly how i did. ill have to try and find a manual.

Hashiriya415 how would i bring it out of fail safe mode or check to even see if it is in fail safe mode?

[Korea]

anyone? i could really use some help on this, the cars really close to getting going i just have to get it past this problem.

[clark]

if its' an S13 blacktop that came out of a kouki 180sx type x, it'll have fins on the head in the front, and will have a FAT o2 sensor in the turbine exhaust housing.

check your CAS, also don't be so quick to cross something off your list...still should check igniter.

[Korea]

alright ill take a look at it as soon as i can, its at a friends. but what is CAS? sorry im such a noob. im trying to learn as much as i can.

[johngriff]

If ECM see's problems with the inputs it sends the output to only 2 cylinders

Really? I'd love to see some proof to back that up.