Q: Hello...I have a 2004 infinity m45. Everytime I started my car it jerked so I took it to a mechanic and I was told my camshaft sensor harness was bad.

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2004 infinity m45 I was told to change the cam shaft sensor harness so I hired a street mechanic and he forgot to disconnect the battery so now my car won't start I can't use my original key I have to use the spare to try to turn it on lights work but it dnt start

My car has 1400000 miles.
My car has an automatic transmission.

Hi there. Anytime the battery is not disconnected and a wiring harness is removed, there is spikes of power that is sent directly to the ECM (computer). Either there is a plug that is not plugged in on your engine causing the vehicle to not start or there is an issue with the ECM. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your no start condition.

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