Help Helpp plzzz! this is really HARD!!!

[Ajizzy]

Okay So i have a 1989 240sx coupe. It was an automatic.... 1 week ago i swapped the motor and transmission to a ka24de. Now see first the motor wouldnt turn over as in the neutral safety switch had to be bypassed. I fix that problem all done car turns over BUT NO SPARK. Sound simple no. Because its the coil.. its gettin power but nuttin out of it. Not a bad coil tryed 3 diff ones... so the coil is not gettin signal how Do i fix the problem Plzz tell me. I hate wiring!!!

[mechpro]

you need a new ignition module located in the dizzy.

[Ajizzy]

I tryed a whole new distributor. Still nothing!! And is that what a dizzy is.

[mechpro]

yeah dizzy is distributor and try checking all your engine ground wires.

[Ajizzy]

Did That still nothing!

[mechpro]

you took the plug off of the coil and tested it for power? if you have power use a sparktester and use it directly off the coil to the dizzy and see if u got spark if not it has to be a bad coil

[GO240]

just have someone try to start the car and pull the coil wire if you get shocked it works if not you won't be in pain and your coil is bad

[Ajizzy]

Dude there is power going to the coil But none out of it! And i tried 3 diffrent coils.

[zerepdivad]

DID you wire up all the wires up under the dash by behind the glove box?

[Ajizzy]

did that but wasnt really sure what wires were what!

[zerepdivad]

Well that's probably the problem then. WHat all did you do exactly? Those wires power up the ecu if i remember right therefore VERY IMPORTANT. car won't run without those hooked up won't even start. I know this from experience.

[Ajizzy]

Can u tell me how to do it cause i did it like green to green and blue to blue ect. still nuttin

[Ajizzy]

Never mind that k. look i still am not gettin any spark!!! i sent it to a backyard mach. thy cant find out either. its gotta be somethin im not goin over. i tried a whole new distrbutor in it. could it be way outta time. or what. it turns over fine i smell fuel just no spark from the coil. the coil has be replace a few times. i need Big help!

[Pirate_Freder]

so it's an s13 ka right? what about your ignitor chip? it's the little black wafer next to the coil, iirc 1" square and 1/4" thick. That controls the flow of current from your coil.

[Ajizzy]

How do i test to see if its any good?

[Ajizzy]

so like where is it at! is it attached to the coil on the bottom the modual or somethin else.

[Pirate_Freder]

I don't remember where exactly it's at since I have an MSD coil now, let me go take a pic of it.

[Ajizzy]

okay! thanks

[Pirate_Freder]

It's the guy that says "PRW-I 2802", in terms of testing it the only thing that comes to mind is to use a multimeter to see if it puts out any power. But how much it should I do not know, it is also a pulse governed by the CAS(crank angle sensor) so iunno how well it'll read on a multimeter.

[Ajizzy]

k thanks ill check it out tommorow bc my friend is bringin his 240 over and were gonnna pull some stuuff off his and try on mine! idk ill try it tommorrow keep a eye out on this post cause i might need you still thanks. and do u kno of anything else that wouldnt et my coi spark???

[motoman399]

i have a friend with this exact problem. im curious to what it is so we can get his car running.

[Pirate_Freder]

Well if swapping out the igniter chip doesn't fix it then follow it down the line to the crank angle sensor and well...oh check the quality of your grounds. Do you have a multimeter that can test for resistance(ohms)?

[Ajizzy]

wait is the crank angle sensor on the distrubor or where?? and can the igntor chip from a sohc work in a dual?? and what else is down the line?? Sorry for all the ?? but i really miss my car and this is week 1 1/2 of it not running!!!! I just need to know so i can fix it

[Pirate_Freder]

99% the CAS is seperate on the KA but I'd have to look. I don't think there is anything else down the line, you know the coil isn't the problem and you know it has power so it comes down to what switches it so that's the igniter chip which is controlled by the CAS(probably routed through the ecu though). so does everything get proper power and does everything have very low resistance to ground(hence the ohm measurement).

iunno about sohc to dohc on the igniter, I have never worked on the sohc.

edit: and testing the cas should be for proper output voltage(see service manual: Chiltons)

[Ajizzy]

k thanks mann big help!! last ? tho where is the CAS located ??

[Pirate_Freder]

looks like the s14 ka is the one with the seperate CAS, s13 has it built into the dizzy. so i hope it's the igniter chip, otherwise electrical issue, maybe even the ecu.

[Lakehimself]

I know it may sound dumb but I didnt read anything about checking the sparkplugs, if one or two are bad depending on the ones the motor may not want to start up, just a hint

[Ajizzy]

Budd its not thos.

K I just bought a new distrbutor and coil and ignitor moduel today nothing happened. Could i have wired somethin wrong on the engine wen puttin the wiring harness on?? Or what else could it be????

[zerepdivad]

I'm still sticking with you didn't wire up the stuff behind the glovebox properly or possibly not at all.

Wiring:1. Locate the body harness (under dash harness that attached to the ECU) that attached to your old harness. Cut the old connector off (the one that attached to your SOHC harness) and attach your DOHC body harness connector. Just match the colors!Yellow/Red --TachYellow/Green--SpeedometorOrange--Ignition startBlack---GroundBlue/Black---Water temp sensor

There will be some wires left over. These are for the SOHC's diagnostic plug, and are unnecessary. Please note: Your car will NOT be able to hook up to a CONSULT tool.2. Use a soldering iron to splice the wires together. It makes for a much cleaner job, and a cleaner electrical signal.3. You need to swap out your tach if you want one that works. No wiring is involved, but it must be done. Simply pull your gauge cluster and remove the three screws behind the tach. Lift and separate. Replace.

[Ajizzy]

Dude thats all been done the first day!!