I just installed a 100,000 mile '03 VK45 into my '02 Q45. All the plugs on the harness appear to be plugged in right, except for a few.
- O2 sensors before the cats, are not plugged in
- O2 sensors after the cats, are not plugged in
- The coolant temperature sensor in the back of the block, is not plugged in. Also, the '03's sensor is a different setup. The '02's harness seems short by about an inch. Maybe it should be rerouted?
All the best,
~HollywoodJackson~