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?

 

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.

 

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

 

Check the ground wire to make sure it's got a good connection?

 

Check all your ground and power cables

 

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?

 

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.

 

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