Thread: When coil pack module is connected the wire harness gets hot and smokes *UPDATE*!!

Hi, I am almost finished with my L67 swap in my 1998 intrigue, but I have run into a real issue. So far I have every wire connected to every sensor/plug minus the MAP sensor (adapter is on it's way) and when I hook the negative cable to the battery I get a big arc and if I tighten it down I get smoke coming from the engine harness plug that goes to the cam, crank and then the Ign control module. I tried some simple deducting like disconnecting the cam and crank sensor and leaving the ign control module still plugged in and it smoked. So I then took the old harness that has just the and plugged the old ign control module in and same thing smoked and got hot again. *Also engine will not crank. I don't know what to do any ideas are more than welcome. Thanks.

I would probably look at the ground real closely with something like that happening

I have checked the grounds, I too think it looks like a common ground issue where the wires are looking for the nearest possible connection.

I was able to use the pre-existing wire harness that was in the car as it was originally a n/a l36 engine. So no mods to the wire harness and as far as the PCM goes I had Overkill make me a tune because there were no intrigues to ever have a SC'd L67 engine.

Yes, I've disconnected the cam and crank sensors and ICM. I found that I can leave the cam and crank sensor hooked up, but not the ICM. The ICM is what seems to be not getting along with the rest of the harness.

Yep its the one from the l67. The pins look good. I also tried the ICM from the l36 that was in the car and its harness and same thing.

right behind the pulley mount

The entire weatherpack connector and at the ICM

I'm gonna check tomorrow, but I'm pretty sure there is because the key has been off the whole time.

That's a possibility, the two cables were like identical.

Ok, so I checked the wiring at the starter and found that somehow one of the wires that I had bolted to it was actually the ground wire that is supposed to be grounded to the block according to a friend of mine. Anyway now the short is out of the way I have a new problem. Now the fuel pump actually primes like it is supposed to, but the now when I turn the key the engine will not turn over. I had the starter out and it tested fine so it isn't the starter. And yes I checked the neutral safety switch incase that helps any.