Hi guys,

My car has been in a shop getting an LS2 install, and after many delays they finally tried to start it. The engine turns but it won't run, it sounds like a distributor engine with a few wires crossed.

The engine was pulled from an '05 GTO by MTI and they installed a cam before shipping it. Any chance they installed it wrong?

The harness was made for the conversion and all sensors are new. Any chance a sensor is bad?

I'm just looking for ideas on where to start. It is getting fuel and spark.

 

If its getting fuel and spark then I seriously doubt its anything with your harness or sensors etc.

The cam sounds scary though. If its not in just right....

 

Yea, hopefully MTI wouldn'nt have screwed up something like that! I'll post up whenever we figure it out.

 

i could be wrong, but sounds like they could have not installed the cam correctly

 

on the ls2 if you put the cam in too advanced and not dot to dot then you will have interference issuses. just take the front cover off and make sure it is dot to dot

 

I think I know what you're talking about. It's a small hole on the crank that needs to be lined up with a mark on the cam?

 

Found the problem: wrong coil packs installed. I had the harness made for the car and I told them they wer the round (Delphi) coils, but the connections were for the square (Mitsubishi) coils. I bought the coils on ebay and they were supposedly off an '05 GTO, but they could be truck coils too. I'm not sure who's at fault.

FYI- the connections are different even though they were made for the same engine. Thanks GM. Basically one pin per coil is reversed causing the coils to fire in the wrong order.