95 VH45de in 240sx no spark

[Krimlin]

Well I'm seeing if you guys can help.

I have a 95 Nissan 240sx with a 95 VH45de from a Q45 swapped in, everything is working on the car but it's not getting any spark. We've checked it, it's getting power to the fuse block from the ECU but from there to the spark plugs nothing's happening, fuses arn't blown and volts check normal.

Edit* - Also tried the 94 ECU and a 92 ECU both seem to work fine but no spark. Also on first attempt to start it had a weak spark and a little bit of fire came out of the heads, but now it gets nothing.

95 stock VH45deStock uncut wiring harnessMazworx jumper harness (Plugs the ecu to the chassis harness)

If anyone has a wiring diagram that would help too!
Modified by Krimlin at 8:20 PM 3/29/2010

[Infinitiguy19]

Check the Crank Angle Sensor, Power Transistors, Coil packs and harness and Main harness.

Here is the service manual: http://Nicoclub.com/FSM

[Krimlin]

Check the Crank Angle Sensor, Power Transistors, Coil packs and harness and Main harness.

Here is the service manual: http://Nicoclub.com/FSM

Thanks a million for the FSM.

The CAS is new, and the ignitors are good as well, I'll check the other things. and update!

[Krimlin]

The FSM doesn't work...

[Infinitiguy19]

NEW CAS!!! Wow that must of cost some serious money.

Here is a more direct link: http://www.nicoclub.com/FSM/Q45/1994_Q45/

[Krimlin]

Money isn't an object with this (I've spent about $14k on it so far not including the price of the car)

The links still don't work. the file is damaged message

[Infinitiguy19]

Try this one then: http://dl.dropbox.com/u/146957/em.pdf

I don't know why its not working for you when it works fine for me.

[Krimlin]

That one works! It may be cause I'm at work, thanks man!

[Krimlin]

Ok we found the problem, after an hour with a few different testers...

Mazworx sent a bad relay with their jumper harness... So problem resolved!

[dsagers]

Curious, what did the jumper cost?

Does it adapt your factory under dash wiring the the Q45 engine harness & ECU?

Any pics?

[Krimlin]

Curious, what did the jumper cost?

Does it adapt your factory under dash wiring the the Q45 engine harness & ECU?

Any pics?

No good pics, the harness is listed as $240, and yes it plugs into the dash harness 2 or 3 relays, then to the ECU, to the engine and windshield wipers