hey guys,
my friends got a 4th gen a 98 and we put a 95 ecu in did the whole swap, axels, clutch . everything is in and functioning, but now the car wont start
we double checked all the sensors and what not. anyone know how to help,
are there wiring diagrams that show me what to change over. thanks
-dys



EDIT< there is a clicking noise when we start put the key in the ignition

 

Did you either ground the park/neutral sensor, or wire it up to a clutch switch?

 

grounded it

should i wire it to the clutch switch

instead of running the wire to the clutch we just connected the 2 wires together

it cranks over, just wont run / turn over
there is a clicking noise when we start put the key in the ignition

 

You don't have to wire to a clutch switch, I guess I worded that as an either/or, and not an 'either or nothing' question.

Have you checked if you're getting spark? Pull out a plug, connect it to the coil pack, and ground it to something. Crank, and see if it fires.

 

Why did you put a 95 ECU in a 98?

 

try to put 98 ecu and see if it works. because if car cranks there is nothing wrong with P/N switch

 

no spark,
were going to see if we can get a ecu from a 96. btw the car is a 97 and we have a 95 tranny.

anyone in CT that wants to come to my house and see if ur ECU works

 

Put your stock ECU back in. An auto will still run with the transmission removed as long as the park/nuetral switch is bypassed, you will just get a CEL for the tranny codes.

 

really
okay, ill go put the auto one back in and if it runs we know its the ecu. thats a beautiful thing
ill brb in 30 mins
keep the help coming

 

isn't the 97-99 different from the 95-96? Cause first of all 95-96 have a o2 right after cat, while the 97-99 have the o2 in the b pipe. I don't know anything else but you might want to get a 5spd ECU from a 97-99. I'm not sure but that is my guess.

 

my friend didnt research this to well so now we get to trouble shoot alittle bit.
anyone know if it has to be a 97 - 99 ecu for the 5spd?

 

Did you try the stock ECU yet?

 

did you try to put back the auto ecu?

 

doing so now

 

Hopefully it will start with stock ecu!

 

still no start with the stock ecu ... what did we miss?

 

it cranks over, but it only sparks ocasionally ... what could we have missed?
(like once every rotaion) i dunno what to do , anyone got pics of what to do? maybe some pics of what to do next.

 

Did you put the timing ring on the new flywheel?

 

...
timing ring?
wtf is a timing ring for the flywheel?

 

did you flywheel have that smaller gear on it??

 

Lol, check ecu for codes, you prob are throwing one(crankphase/timing ring).

 

OH, THAT THING!!!
are we supposed to take it off of the AUTO flywheel?
or buy a new one for the 5spd one ...
i've never dont this auto - 5spd thingy-magig.
i dont remeber my 3rd gen having that ... is it supposed to?
oh deer, i think were a lil over our heads.

 

Yep, you must pull that ring and install it on the manual flywheel. Time to pull the tranny...

 

is it the same thing from the auto to the manual? or is there 2 different plates, one for the auto and one for the manual?

:-/

oh well, here we go again

 

Correct me if i'm wrong, but don't manual flywheels ALREADY have this piece installed?

 

I've done this EXACT swap, make sure you have the starter connected properly. If it just cranks, its the crank sensor, make sure it's plugged in and bolted down. It's easy to iss in the swap, and you won't start without it. You can run either ECU, your car will run the same.

 

beats me I'm going to do the 5spd swap sometime soon hopefully so when the time comes I'm calling the people on CMC over to help me out.

Oh and good luck with the car, hope everything works out for you. Don't forget to post back and tell us if it worked or not.

 

why didnt you call mike jez (blackbirdvq)??
he has done more than 10 swaps - including mine

 

i found out what the problem was, we have to line the flywheel up with some mark on the tranny, theres like a pin or something.

just wanted to say thanks for everyone helping us out. we'll prolly rip it this week
thanks alot everyone

 

ahhh it wasnt it, i dunno wat is wrong with it but it wont start any more help please...

 

It HAS to be a sensor... namely the crank sensor that reads the teeth on the flywheel. You have any CEL codes?

 

I experienced the same exact symptoms because of this timing ring. The reason my flywheel didn't have it is because I took the flywheel from a friend of mines that replaced it with a Fidanza. He didn't know and neither did I that the timing ring had to be removed from the stock flywheel and put on the Fidanza. But Nismo3112 is right. If you didn't install an aftermarket flywheel, the timing ring will be on the stock one unless you bought it from a person that removed it from there car.

Mike

 

can i get a timing ring from nissan? or where else could i get one?