Battery/Alternator Issue on the horizon. - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 05-29-2011
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Battery/Alternator Issue on the horizon.

Since I've been back k notice my truck seems to take alittle bit more to get stArted and a out a week ago I noticed when at a higher RPM my battery light would come on. That only happened once and I think it was cause the ac was on as well but I know that's signs of an alternator. Yesterday I was cruising at about 65 1900rpm's than started to cost down a hill and my battery light came on and the gauge went all the way up to H. As soon as I touched the gas it went back to normal. Which one should I take out and test first? seems more like the alternator to me. Also how does a higher output alternator effect the rest of the electrical system?
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Old 05-29-2011
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higher output alternator allows for more electrical accessories that take a lot of draw. mainly like car audio, or a lot of auxiliary lights, or something like that. it wouldnt have negative affects if you didn't need the extra amperage but it would just be overkill.
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Old 06-08-2011
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well i changed my battery last night with an optima yellow top cause yesterday i went and had my battery tested and they said it was bad, than today it died out again coming to a speed bump, just shut off, went and had my alternator tested and they said it was good, any ideas? my battery gauge has been sitting alittle lower lately too
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Old 06-08-2011
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Check the ground wire to make sure it's got a good connection?
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Old 06-08-2011
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Check all your ground and power cables
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Old 06-08-2011
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Checked the ground on the starter and cleaned it up and cleaned the terminals on the battery nothing really huge to clean up and didn't make a huge difference. Still cranks up fast but the gauge stays alittle low still. Is there anymore I need to check? Any other ideas?
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Old 06-09-2011
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mine was doing the same thing. replace your negative battery terminal. or turn it as far as you can until its tight and bolt it back down.
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Old 06-09-2011
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If I were you I'd do this..

1. Do the Big 3. Do it in 1/0 Welding Cable with big brass ring terminals

2. Buy a nice alternator. Preferably 130+ amps

3. Relax because you shouldn't have anymore issues after that
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