Not every B/Y wire is ground. There are some 12v wires that are also B/YIIRC. Referring to the coil wires. Is it b/w or b/y??

 

bad ecu check harnes make sure no burns or shorts then put the new one in. if this does not work see if you can get some help from local forum members in the area your in cali should be plenty of help around good luck bro.

 

Yes you are right most b/y wires are not ground but he is refering to the one in the picture that is the ground for everything, so if anyone has a turbo II ecu and wants to be paid top dollar for it pleace pm me

 

UPDATE**** So finally i got my ecu today, it look like some old wwII artifact but, none the less i popped it in turned the key and bam ecu light comes on, then try to start it tries tires and VROOOM she fires up!!!

the MAF was disconnected so it was idleing at like 500 then we plugged the maf back in and the car died

when i try and start it the car starts and then promply dies. But atleast she is started and running!!! thanks for the help i have learned a lot about these cars in a short time and they are not as hard to figure out as everyone makes them seem.. WEll any new suggestions i would it would do this would be great thanks a lot

 

told ya now all you have to do is make sure everything else is in good working state take your time and troubleshoot may the force be with ya.

 

we got her all together and running now it idles decent a little up and down, but we drive it, it bucks real bad we are gonna swap new spark plugs change the oil and get her all up on maintenance then see where i stand

 

If it bucks real bad then you have a TPS problem.

 

you ALSO might want to check that MAF sensor. If the MAF sensor is bad, most likely, you're car will run better when its unplugged. You should also consider what made the original PCM go bad like someone mention above.

 

AIR FLOW METER???
This is not possible.
I think you are in the Twilight Zone, or you were dreaming.


-Ted

 

umm... no.... it was..

its all plugged in now and the car runs and idles but it bucks and suges a little bit, like i said im going to toss in some new spark plugs and check everything out..

the reason the pcm died is because the main engine ground was not connected .. welll atleast thats my theory... The EGI fuse wasn't blown but, still its the only thing that could have been wrong. This car is STOCK so... Does the NA MAF work ?? i know the nissan sr20 works with NA KA20 maf so, lemme know thatnks

 

FCs do not use a MAF (mass air flow) sensor. We use AFM (air flow meter). I cant think of any way for the car to run without the AFM unless you have a standalone ECU.

 

My S5 would run without the AFM, it'd just die the second you touched the throttle/did anything else. It'd also idle at ~2800rpm

 

He described the ground wire from the battery to the engine/transmission. That IS the ground wire for most every thing on the damned car. If it's not connected tot the strut tower/starter bolt then not a darn thing electrical is going to work on the DAMED car. Period.

And in his post he mentions that it was off/disconnected.

I didn't fall off some turnip truck.

 

Turnip truck? Damn, you are old!

 

OHhhhh, go swap out some black box on an airplane and be quiet.

 

Ok guys i pulled codes and we got 1 long 8 short, so im assuming this is 18 TPS so im gonna go learn how to adjust that badboy

does anyone know why a TPS would all of a sudden just got out... then again that ground was off prolly fucked a few things

 

I think I'd get arrested for that sort of thing!

/notanaircraftmechanic

 

I would'nt have thought that would make the tps go bad. Could have though, not likely thought.

******I think I'd get arrested for that sort of thing!

/notanaircraftmechanic******

My bad. I thought all the RATS were avionics techies. Oh! They all should be in jail though. That's a given.

 

also check your AFM to make sure the voltages are within spec .. you can check the FSM's which are availble online ...

a bad AFM will cause all sorta problems ... just be sure to check it and make sure its within spec .. its really easy and can account for many non start issues in my opinion

TPS is also a biggy .. make sure its in spec
might wanna reset your timing as well .. im sure its not related, but it cant hurt ..

 

ok messed with some stuff and then re read codes and shes throwing, 8(AFM) 10(afm air temp sensor) and then 12 witch is TPS wide range.. I've got a new AFM otw but i need to know what to do about CODE 12 thanks

 

My AFM kept mine from sparking... It was really wierd. I had voltage at the coils, but no spark. What I did was smacked the hell out of the top of my airbox and it knocked something into the right spot apparently. Now it runs like a top.

 

yea the car has had spark and now idles fine AFM is just acting wacko gonna get a new one