SR20DET Not all Cylinders Firing - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Korea · 11-22-2009, 10:42 PM

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 · 11-22-2009, 11:00 PM

have u checked ur injectors

Korea · 11-22-2009, 11:09 PM

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

Hashiriya415 · 11-22-2009, 11:23 PM

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

Korea · 11-22-2009, 11:40 PM

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

Hashiriya415 · 11-23-2009, 02:31 AM

Quote:

Originally Posted by Korea

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

johngriff · 11-27-2009, 12:32 PM

Quote:

Originally Posted by Hashiriya415

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.

Korea · 11-23-2009, 12:06 AM

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 · 11-23-2009, 01:55 AM

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.

Korea · 11-23-2009, 11:50 AM

Quote:

Originally Posted by 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.

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 · 11-25-2009, 12:16 PM

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 · 11-25-2009, 12:57 PM

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 · 11-26-2009, 12:15 PM

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.

11-22-2009, 10:42 PM	#1
Korea Join Date: Oct 2009 Location: NC Age: 38 Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	SR20DET Not all Cylinders Firing 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.

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11-22-2009, 11:00 PM	#2
fcdrifter20 Post Whore! Join Date: Nov 2007 Location: riverside, ca Age: 37 Posts: 2,869 Trader Rating: (44) Feedback Score: 44 reviews	have u checked ur injectors

11-22-2009, 11:09 PM	#3
Korea Join Date: Oct 2009 Location: NC Age: 38 Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	Yeah i did that earlier today. they are all good.

11-22-2009, 11:23 PM	#4
Hashiriya415 Zilvia FREAK! Join Date: Jun 2007 Location: San Francisco Age: 37 Posts: 1,007 Trader Rating: (22) Feedback Score: 22 reviews	ECM is in fail safe mode, check basics, check the FSM, there are free downloads out there if you need them

11-22-2009, 11:40 PM	#5
Korea Join Date: Oct 2009 Location: NC Age: 38 Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	fail safe mode? sorry im noob, i wouldnt have been able to get as far as i have without my friends.

11-23-2009, 12:06 AM	#8
Korea Join Date: Oct 2009 Location: NC Age: 38 Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	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.

11-23-2009, 01:55 AM	#9
oni jake Zilvia Junkie Join Date: Sep 2007 Location: ---------- Posts: 416 Trader Rating: (5) Feedback Score: 5 reviews	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.

11-25-2009, 12:16 PM	#11
Korea Join Date: Oct 2009 Location: NC Age: 38 Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	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.

11-25-2009, 12:57 PM	#12
clark Zilvia FREAK! Join Date: Mar 2008 Location: new york Posts: 1,035 Trader Rating: (1) Feedback Score: 1 reviews	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.

11-26-2009, 12:15 PM	#13
Korea Join Date: Oct 2009 Location: NC Age: 38 Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	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.