I have no clue where to even start on this one. Whatever wire was wired to close the relay for my fuel pump lost power, so I rewired that, and the one for my gauges cuz they were on the same circuit. When the pump and gauges went out, I was stranded, so I bypassed the relay and wired the pump to the battery to drive it home. Car ran fine at this point. After sitting a week or so. I just got everything rewired tonight but now the right bank is not sparking. I switched the whole set of coil packs from one side to the other to see if it was at the packs or before and still only the left bank is firing. I'm sure this is something stupid, but i'm stumped.

Can anyone point me in the right direction?

 

What kind of car and motor?

 

02 LS1 from a Camaro in an 88 RX7

 

The harness has seperate power wires that power the odd and even injectors and coils. One power wire for each side. I'm not sure if they use a common ground or not. I can check my spare harness tomorrow to see. Check your ground wires on the back of the head and make sure one didn't break close to the eye ring that they bolt on through.

 

i only felt one ground wire on the back of the heads, on the drivers side.

 

lemme pull some wiring diagrams for ya

 

 

There should be three different ground wires, unless it's an aftermarket harness. I don't how they are built.

 

No power to the coil packs via the pink wire.

 

looks like each bank of coils has their own fuse...on a stock harness...but i would check for power to the pink wire....all else fails run the pink wire from the dead row of coils over to the good row of coils pink wire...that should get it goin for ya.

 

Check the injectors, on the same side as the dead coils, for power. The same fuse should power the injectors and coils. If the injectors have power, then you must have a broken power wire before it gets to the coil pack.