Join Date: Jan 2011
Location: Williamsburg, OH
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Can bad batteries/atlernator affect o/d light?
I've been having issues starting my truck recently and was planning on purchasing new batteries this weekend. Last night I had to jump my truck to get it going. I went to get a load of steel (~1600lb) on a skid to deliver to a local business today. Before I got the load, I noticed my O/D light flashed on and off. When I got to the place to load the steel and put it in park, the light quit flashing. When I left it started flashing again, and on the way back home I noticed it was slow to accelerate in 1st gear and didn't seem to shift out of 3rd. It was only a short ride home so I kept it at 50ish mph ~2k rpm. When I got home I stopped in my street, put it park then dropped back to drive and it was still slow to accelerate. (O/D light flashing all the way home) I parked it, shut it off then tried to start it and it wouldn't turn over.
Today I plan to try to get it to start when I get home, run up to the parts house and get batteries, and have them test the alternator. Is it possible that the batteries being shot and/or alternator issues can cause the O/D and tranny issues, or do I have more issues on my hands?
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99 F350 Dually CC LB 4X4 --- Sold