i'd figure i get some input from you guys before i take the car to a local stealership. i'm not getting any spark from cylinder 1 and 4. checked all fuses and swapped back the stock coil packs and still the same problem. also changed coil 4 into coil number 2 and still the same. car has a stock ecu and has a vishnu ecu upgrade with smart on it. checked all wiring on ecu and piggyback and all lights up. i recently wired up a coil on plug system, drove down the block and all of a sudden car went dead. managed to limp it back home on 2 cylinders. now won't spark on 1 and 4. any ideas like ecu, or ecu fuse, or igniter or something. it threw two codes and they are p0335 and p0340. it's the crank sensor and cam sensor codes. not sure if that has anything to do with it not sparking. put new plugs in and still the same. seems like now power coming from harness that plugs into number 4 coil and going to number 1 plug. any ideas would be appreciated. thanks. car starts up but runs like crap and only getting spark on 2 and 3.

 

i have the same problem. i dont have the p0335 code and ive changed the cam sensor and still no start how did you solve this problem?

 

I am having a similar issue. I through the p0340 and did some electrical troubleshooting and I think it's an issue with the ecu or the wire from CPS to ecu because I get power to both sides and ground is good but on ignition side 2 (cylinders 2 and 3) I don't get any signal for the spark plugs to fire.

 

I am having a similar issue. I through the p0340 and did some electrical troubleshooting and I think it's an issue with the ecu or the wire from CPS to ecu because I get power to both sides and ground is good but on ignition side 2 (cylinders 2 and 3) I don't get any signal for the spark plugs to fire.

 

My first guess would've been the 10a fuse, but that'd take out both sides of the coils, not just one.

Here's the diagram for reference:


Btw, when you say you "recently wired up a cop system," do you mean recently as in minutes before the car died? What coils did you use? Are you sure you pinned each coil correctly and didn't cross signal/+12v wires?