Need Help with Engine Swap.
I have done a few engine swaps in my life. When my nephew bought his relatively low mileage Cobalt, I didn't his car would be one of them. Well, he isn't exactly gentle on it.
Long story short, he spun a rod bearing. I switched it out hoping that it had been caught in time. No dice. Time for a new engine. I got a 30k mile 2005 Malibu engine to go into his 2006 Cobalt. 2.2L engines.
We work different shifts and he worked on it when I wasn't there. This included removing the wiring harness from the engine.
Essentially, the engine is installed. Everything is as right as far as I can tell. The engine will actually start for a moment and then die but only once. If I reset the computer, it will do the same again.
The codes it gives are mostly throttle body/position codes. The codes are as follows: P0222, P0220, P2135, P2101, P1516, P0641, P060E, B2AAA.
I read these cars have weak harnesses to the throttle body. I can only assume he yanked on wires when he removed it though he denies it. I cleaned all the terminals. I looked at the wires for breaks/cracks. I took the fuse box back apart and checked inside the plugs for breaks/obvious problems. No dice.
I switched the throttle body and any of the sensors out. No dice. I've reset the computer a few times.
Something I did notice is that the throttle body slams closed. Absolutely no give from all the way closed at any time when trying to start. With the power off the valve is easy to move. Live readings of the throttle position with the key on stay at 50% constantly. The throttle body gets hot to the touch - I assume the plate motor is holding pressure on it at all times is heating up the metal around it.
I'm really not sure where to go from here. I told him to take pictures and be gentle with any wiring but teenagers aren't usually that good at following directions. A video tour of the wiring harness on a 2006 Cobalt would be amazing if anyone could help me out. I can take pictures of any place on the engine or make a video too if anyone would be interested in taking a look.
Most of the cables seem to be only capable of going into one socket, so I don't think they are necessarily plugged into the wrong place but who knows?
Any help would be greatly appreciated.