I made a remark about the battery being dissconected for this reason..
After a certain amount of time the ECM will learn the Fuel timming( Thats without the code 41 ) Once it has learned the Fuel timming and the Cam sensor fails, or the Cam magnet jumps out resulting in a code 41, the car will run, not always great but it will run..
And I'll repeat myself, The Cam circuit is used as Cylinder #1 TDC reference for fuel injector timming and true SFI( Sequential Fuel Injection )...
Now my other question for you is, Do you have spark to all 6 cylinders?
There is a good possibility that the Crank sensor could be dead... Generally even with a code 41 the car should run, Might be really crappy but it should run... If the Crank sensor fails, the car won't start or run... Or could have intermintent stalls, or a no start condition once warm...
So what happened to the car? Did it get parked and just not start anymore? If so check for spark..
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