Battery Light

[cchase]

When my truck is running the battery light comes on. when I hit the gas and drive it goes away, intill I let off again, then it will flash and come right back on... my amp gauge is in the same spot it has always been, and in the AM, when its been real cold it cranks along time and sounds weak... but it does start.

[cchase]

bump formyself, its a new low I know i know,....

[Brian]

your alt. is probally bad, which puts an excessive load on your batts. change the alt and have the batts. tested. a bad alt will kill your batterys life span.

[geekdownrange]

Have you done the normal checks?

- Battery cells full of distilled water (if the battery has removable cell caps)

- Cleaned and tightened all connections on the cables to both batteries

- Checked the voltage at the batteries with the engine off

- Checked the voltage at the batteries with the engine running

These should give you an idea if you're looking at a battery or alternator issue. Since it changes with engine speed my first guess would be alternator, but giving everything a good once over may find something quick and easy.

[cchase]

ive checked the conections, but have not done volt tests, it should be like 14.5 right?

[geekdownrange]

I would expect about 14.4 fully charged.