Hey, i just installed a GReddy turbo kit on an 05 G, and now it don't start. The coils are not getting a signal to spark. I've exhausted everything I can possibly check without a Consult-like scan tool. There are also no codes, all fuses are good, there's voltage to all the sensors. Its getting fuel and the MAF is good.

Think it could be a cam or crank sensor? Thats what i'm leaning toward but i need something to check their patterns. Any ideas?

 

what else did you change?
did you have to reinstall your flywheel ?

 

yes. But the crank sensor reads the flywheel. Everything was assembled properly.

 

Do the fans kick turn on & stay on with the key in the on position?

 

Nope!

 

It's getting fuel but no spark. Did you install the eManage? I would double check the wiring.

 

Of course the emanage is in, i've checked the wiring on that over and over again. I thought i might have damaged the wire after where i tapped in and the signal wasn't getting out, but there is voltage, power, and signal after every wire i tapped into. Its cranking, air, fuel, all fuses good. There's even power coming out of all the pins of the ECU there's supposed to be power coming out of. I was starting to think about the immobilizer, but that would prevent the car from even cranking wouldn't it?

As far as for checking the cam and crank sensors, i can only check to make sure they're functioning correctly w/ an oscilloscope right?

 

Get rid of the Emanage blue ASAP (not necessarily your issue) and get an Emanage Ultimate or Utec. The blue cannot control timing and you're going to be a ticking timebomb.

Did you install new spark plugs?

 

I've already gone through completely removing the emanage and just trying to start it on the regular ecu, as to eliminate all the extra wiring, but it still did nothing so i put it back in. Yeah, not a big fan of the blue either, but its what the customer wants so whatever

 

got to be the crank sensor.

Also, it is possible to install the flywheel incorrectly. I've heard of it happening before, and the car would start.

Try picking up a new crank sensor from the dealer. that would be easier to change than to get to the flywheel now! the wastegates need to come off for you to be able to get the trans off of the engine. if it isn't the sensor, then it is probably the flywheel.

 

THIS WAS MY EXACT PROBLEM

My flywheel was giving the right signals just at the wrong time. Make sure you have the timing marks lined up on the car and on the timing ring.
I had an after market fly wheel and the timing ring was off by 5 marks.
We put it all back together and it fired right up!
I am still having issues with running due to the 750cc injectors. but this is a seperate issue.

 

Even if the flywheel was off some teeth or what not, it would still send a spark pulse, it would be at the wrong time, but it would still send a signal none the less. I'm not even getting the signal.

I don't know why i didn't think of this earlier but i have a 350Z w/ the engine out right next to this G! I'll just replace the crank sensor with that one and see what happens.

 

I didnt see it earlier, but have you checked the basics?

Are you getting spark at all cylinders?
Are you getting fuel to the injectors?

To test crank position signal issues, unplug the sensor, and crank the engine. If it starts (it might take a couple extra seconds before it fires)then your flywheel is misaligned or the sensor is bad.

 

Wish i woulda seen that earlier. I've already began removing the tranny to check on the flywheel dowel. Yeah, i put that 350Z sensor in and still nothing. No spark and any cylinder but it is getting fuel to the injectors. So i guess i'll check back when i have the tranny out. I got a couple other jobs going on here so it may be a couple weeks before i check back in.

Thanks,
Ace