presleymk4 Posted February 10, 2019 Share Posted February 10, 2019 hey i drive a 1990 mk4 escort 1.3 and my lights are draining my battery, i drive in the day and volts stay at around 12-13 but wen i turn my lights on it drops to about 6 and keeps dropping and im getting confused, much appreciated Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted February 10, 2019 Share Posted February 10, 2019 Sounds like the alternator is knackered tbh. At least it's a simple one to test on those, no modern smart charge lol! Quote Link to comment Share on other sites More sharing options...
presleymk4 Posted February 10, 2019 Author Share Posted February 10, 2019 oh but i recently put a new alterator and battery on her lol coz the old one was winning at me Quote Link to comment Share on other sites More sharing options...
Micro Posted February 19, 2019 Share Posted February 19, 2019 On 2/10/2019 at 11:49 PM, presleymk4 said: oh but i recently put a new alterator and battery on her lol coz the old one was winning at me If your lights are causing your voltage to drop to 6V instantly, and your battery is fully charged, then your battery is toast imo. Even new batteries can have faulty cells which drop out under load. Your alternator may also need checking, if it's not been charging the battery properly causing it to fail prematurely. Quote Link to comment Share on other sites More sharing options...
presleymk4 Posted February 19, 2019 Author Share Posted February 19, 2019 yhhhhhh its a faulty alternator i got a new one on its way just hopefully this works Quote Link to comment Share on other sites More sharing options...
presleymk4 Posted February 23, 2019 Author Share Posted February 23, 2019 all sorted now shes running well, replaced the alternator and belt Quote Link to comment Share on other sites More sharing options...
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