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I have a 2003 olds aurora 4.0 w/ 49,000 miles on it and all of a sudden it threw a code and is running wierd. The 2 codes it threw are:


Cylinder 5 Injector Circuit Problem


Random Cylinder Misfire


The car is misfiring on cylinder 5 and i dont know what to do. Please help me.

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not a great number of miles but when have you had a tune up. plugs , wires , ignition coils , after all these years it surely has wires that need replacing , that would cause a misfire.
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TOMBOGYs 2003 Aurora
 

I Have a 2003 Aurora, Since the Engine, Transaxle, and all of the rolling stock have been Remaned, 3500 miles ago, and 7 months. My wife drove it to the store, and when she came back, it started to self diagnose, did not throw a code and the headlights stayed on until it killed the Battery, it went through every system on the IP, tested the door locks, the theft system, moved the seats to all positions, tested the sun roof, and much more, then has done nothing since. I've changed and reprogrammed the BCM, Cannot get communication with anyother Modules, Disconnected the Neg Cable to charge the Battery, Headlights ,still unable to shut off. Anyone have any Ideas?