gogi Posted February 19, 2018 Share Posted February 19, 2018 BATTERY LIGHT CAME ON.DROVE 1 HOUR+ TO GET HOME NO LOSS OF POWER.CHECKED VOLTS 11.8 REVVED MOTOR NO CHANGE. NEXT MORNING BATTERY 12.6 PUT CHARGER ON IT AND WOULDNT CHARGE BATTERY.TOOK BATTERY OUT OF CAR AND PUT ON CHARGER,STARTED AT 12.2 NOW AT 12.8? WTF PS DOES ANYONE COME HERE Quote Link to comment Share on other sites More sharing options...
fordtech1 Posted February 19, 2018 Share Posted February 19, 2018 11.8v is low with engine running. Probably has an alternator issue. Start engine and check voltage. Turn on lights and a/c voltage should stay about 12.5-13.5 depending on load. Quote Link to comment Share on other sites More sharing options...
akirby Posted February 19, 2018 Share Posted February 19, 2018 Agree on the alternator. Probably should also replace the battery especially if it’s the OEM battery. Anything over 3 years is living on borrowed time. Quote Link to comment Share on other sites More sharing options...
YT90SC Posted February 20, 2018 Share Posted February 20, 2018 On that era Focus with a Zetec, be sure to check the wiring where it meets the harness at the firewall. It loves to work harden and break there. Quote Link to comment Share on other sites More sharing options...
YT90SC Posted February 20, 2018 Share Posted February 20, 2018 Forgot to add, if you do get an alternator, DO NOT buy a Motorcraft. HUGE quality issues. Quote Link to comment Share on other sites More sharing options...
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