johnny@abergsforlag.se Posted October 10, 2014 Report Share Posted October 10, 2014 After a "check charging system" error my shop repaired my Cadillac STS 1998 generator (one diode and regulator was broken). Reinstalled the generator and everything. Started and the "check charging system" error was gone. But the dash boards says the battery load is only 11.8 V and the warning battery lamp on dashboard is flashing fast! No error codes to pull out. A mechanic said it probably is wrong regulator installed. The electronic shop checked but says it's correct regulator due to their manuals and connections to generator are correct. Does anyone have a clue what to check for? Quote Link to comment Share on other sites More sharing options...
JimD Posted October 11, 2014 Report Share Posted October 11, 2014 Your alternator is not developing the correct voltage - for whatever reason. Do all the work again. Quote Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
Ohio Jim Posted October 11, 2014 Report Share Posted October 11, 2014 aaberg, My two cents...Check the plastic piece clipped on the battery cable(s) at the battery. I chased down a similar situation and that voltage sensor had barely a hair of the stranded wire attached to the sensor. I ended up cutting, stripping, soldering and re-connecting the wire. How about a little detective work. Place a volt meter on the battery terminals to verify the voltage. Does the voltage vary with load? Turn on high load accessories and see if the voltage is affected. Your shop should be responsible for verifying the alternator is putting out enough voltage and amperage to keep the battery charged. As you are probably aware, 11.8 volts will not do it! Best of luck... don't give up! Ohio Jim Quote Link to comment Share on other sites More sharing options...
johnny@abergsforlag.se Posted October 11, 2014 Author Report Share Posted October 11, 2014 Thanks for answers. Hm, the flashing battery lamp wasn't on before just after the alternator repair was done so it seems unlikely the battery wirings will mess. Seems more likely it's a regulator problem. The generator doesn't load at all on any rpm. However I will check the battery wiring just to be sure. Quote Link to comment Share on other sites More sharing options...
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