Car died on me on the highway yesterday, was cruising part throttle about 90mph when it happened, no real problems up to this point been driving it last few weeks. Would not restart,had a buddy drive me back home and got it loaded on my trailer.

Went through it ,took off valve covers lifters all function rotate fine ,plugs look fine. Pulled off oil filter cut open looks fine. Have fuel ,verified with rail fuel gauge, injectors fire ,verified with voltmeter and also pulling plugs,plugs have gas on them. No spark on both banks ,verified with spark plug tester ,immediately thought camshaft sensor or crank sensor. I log up around 200 rpm on hp Tuners when starting, so I assume crank sensor is good.
cam sensor I pulled out ,it's clean - I checked it by probing the 2 outer leeds ,get 5v ,goes to 0 when I put a metal socket on the magnet ,this is with it on the car,key on.

Also there are no codes,the shitty part is I was logging hp Tuners when it happened, but my big fingers closed out the log inadvertently, I have swapped a couple of the relays around in the fuse box ,no dice - the crank and power train ignition relays

also the throttle body functions fine ,idk what else i can check with hp tuners ,but no codes with that or a tech 2 clone.

Background on the car : c6 z06 heads cam around 600rwhp ,recently auto converted, been driving it last few weeks making adjustments, mostly af/ vve stuff ,was running good up till now .
I will say another shitty thing was i was on the side of the highway and 2 c6's and a c7 all passed by no help at all ,wtf walked halfway home till i got picked up

 

If you see 200 RPM during cranking your crank sensor is probably OK…you have no spark or injector pulse with a bad crank sensor…since you have no spark on all cylinders I’d check the ground for the coil packs which is G107 which is on the left cylinder block near the front O2 sensor…that is ground for both banks.

 

thank you brother

 

 

I found the problem ! G107 right rear of engine, looks like the tab broke clean off the 2 ground wires ,gonna fix that and check continuity and let you know

 

Should fix it !!…this was an easy one !!…continuity not the best way to check a ground but you can do whatever you feel is the best way…a voltage drop check on either the positive or negative side of the circuit is a good way to check or with a old headlight bulb that is approximately the same amperage as that circuit…coil pack draw around 4 amps.

 

 

I'll check those methods out ,does the ignition need to be on for that when checking the ground on the coil circuit ?

 

For the voltage drop method the circuit needs to be energized…as the saying goes…”no current flow…no voltage drop”…in your case I would just fix the ring terminal.

 

That fixed it ,some bloody knuckles but no cost