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  1. 7.3L IDI Diesels (Not Powerstrokes) 1988-1993
    So my battery light came on and the truck died. I replaced the alternator and starter, it sits just below 13 at idle and 13.5 at speed. Now when I turn the AC on or literally any electrical using components it tanks it to about 10 volts. Is there anything else I should or can replace to fix the...
  2. 7.3L IDI Diesels (Not Powerstrokes) 1988-1993
    I posted yesterday about the truck (1988 7.3 IDI) not turning over. After hooking it to a charger it started but not happily, then it ran good and sat at 12 or 13 volts for awhile so I decided to take it on a bit of a test drive through town. Well, after hitting about the 3rd or 4th stop sign...
  3. Power Strokes 1994-1997 General
    ay guys here's the story! Last year I left my lights on and killed my batteries. I replaced them with some 850cca batteries from AutoZone. After that I have always shown 13.8 to 14.4v on my CTS. The other night when getting home as I was slowing down to turn I noticed my voltage at 12.8v. I sat...
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