Have tried re-insulating the power wire to the starter with aluminum tape, and relocating it away from crank sensor and other Wiring. Haven't yet searched for the ground wires only found one in the engine bay and it's tight. The errors I get seem to vary between "stop and restart", and "no oil pressure", and one time I got the immobilizer error, all the while it's hard to crank, but after six or seven tries it usually starts and then the error goes away.? Any ideas what could be causing my different errors and tach problem ? Thanks

Once I've been through that rough starting in the morning, and the car is warm, it usually doesn't do it again the rest of the day. Until the next morning when it's cold (Or sat for a while). Thanks