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Cadillac Repair/Battery No Charge 93 Cadillac Eldorado


Had my a/c unit charged and converted to current refrigerant yesterday. Now, next day my "battery no charge" warning light is on, but car starts fine. Any suggestions as to why this light is suddenly on?
Thank You


Well, they could have caused a gauge fuse to blow by a bare portion of the power wire going into the back of the alternator. Not a lot they could screw up, but I don't know what they actually did. If the battery is not reading 13.2 volts minimum with engine running, the battery is not charging. If the system gets under 10 volts, the engine will stall.
I would suggest taking the car back to them and ask them what they did to cause this situation, because what was done doesn't relate to this, other than they pinched or scraped the power wire going to the alternator.


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Rob Painter


Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?


Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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