So this engine replacement has been problem after problem. Now everything seems to be working except for I am not getting spark at the coils.

From things I have been reading I have a few things to look at. One thing that keeps coming up is a braided ground wire from the block to the head/valve cover. All the posts about it are from s/c car threads however, so I am not sure if the LNF has this wire or not. Does anyone know?

 

No braided ground strap on any lnf cobalt I've ever seen but can hurt to add one

 

 

I have that one hooked up, but I am still not getting spark for some reason.

I am going to rent a code reader tomorrow and see if any codes are causing it.

 

Was this ever solved? I am having the same issue now. At first it sounded like it was out of timing, put it on timing twice. Both times it started for a few seconds and then it stalled out, there's fuel because I can smell it, I can hear the fuel pump and I seem to have no spark. Coils have been replaced, cam shaft position sensors, crank sensor, cam shaft actuators have been replaced and I still have no spark. When I step on the gas and clutch at the same time, it sounds like it wants to start, but doesn't.

 

i am in same boat, did dual pass on my 07 now no spark, if i get it figured out i will let ya no

 

Same, I just built my motor and when installing it the first time it fired right up, the head had to be taken off because of a few mishaps, when I installed it again there was no spark and the engine just cranks. Compression and fuel have been testing and they are good, already checked the fused and they are good, as well as relays. Guess I have to check the wires next.

 

What did you unplug when you did the modifications? You very likely plugged something back in incorrectly.

 

took the supercharger bk off inspected everything i unplugged only 4 plugs and still no spark yes they are all plugged bk in where they come out of, all i did was dual pass, i no it has to be something i did cause car ran great till i did this, i will never do another mod to it again if it ever runs again -- Thanks for the reply

 

let me know if ya figure it out, i am at a complete loss at the moment

 

Did you swap the Baro and SCIP plugs? They're the same exact style plug and they're located on the same exact stretch of wiring - the Baro plug T's off of the harness that runs to the SCIP; the SCIP being at the end of the harness. That's how you can tell them apart. This usually won't cause a no-start... but it's a good place to start.

Again, double check all the connectors and ensure that the fuel injectors are plugged in and make sure that the coils are plugged into the right plug.

There's a 15 year history of people plugging **** in wrong on these cars. That's the only reason I'm insistent upon you checking what is plugged into what.

 

i have double cked everything, did not have to unplug the baro plug, at a loss here, guess i will have to have it towed to my shop i use- thanks