I am recently having problems with some electrical components of my car. My alternator went out 2 months ago and I replaced it with an 80 amp OEM (allegedly) alternator from RockAuto. Things were fine for a little bit, but I recently began observing the obvious signs of a low battery (headlights dimming when windows are being pit up/down, etc) and upon looking at my battery I discovered that my cable on the positive terminal that connects to the starter wwas VERY corroded. I bought a replacement cable but when I installed it, the start was constantly engaging. The only thing I could do was disconnect the battery to cease the starter engaging. I went to install the old cable again so I could get to work, however the metal tab that is bolted onto the battery terminal from the actual wire component of the cable broke off, so I had to get a copper connecting piece and crimped it to the wire so that I could connect everything. After hooking everything back up, I used a multimeter to check my battery with and without a load. Without read 12.4V and with a full load with the car running read 12.6V and was very slowly increasing. I was under the impression that I should have gotten a reading of 13.5-14V if the alternator was fully operating. However, the battery/brake light dash light combination has not come on to alert me to an alternator problem. Would the corroded positive cable cause this voltage reading or is the alternator bad already? I cannot take off the alternator and have it tested at a shop since I then could not drive to the shop, so is there a way to test the alternator with it still on the car with my multimeter? Also, what would cause the starter to always engage like it did when replacing the cable with a new one? Are these problems connected?
have the same problem?
Sunday, December 14th, 2014 AT 4:16 PM