batt. light comming on

[dulliesmoke]

hi guys and gals, i have a 00 f350 crew cab dullie and the batt light just started comming on intermitintaly yesturday. the guage still reads where it always had and it still starts and runs finel. i was jsut wondering if anyone else had had a problem with this? thanks

[lilredpowerstroke]

The gauge jus shows if the alternator is working. The light is probably coming on because the batts are getting old and not really holding a charge. Might wanna get them tested before they leave you on the side of the road or in front of your house going clickclicketyclickclick. My batterys went out with no warning. Got up one morning headed to work turn the key and nothing it wouldnt even go click click. Hope this helps.

[Turbo Rushmmm]

Lilred is right i replaced both my batteries and the light still stayed on, Talk about really confused then, they tested out allright, About 2 weeks later i went to work got to town to pick my buddy up, Well long sotry short he drove that day!!! One battery was pulling over 12 and the other was at 7

[99Smokin73Stroker]

What's it cost to replace both batteries in these rigs?

[Turbo Rushmmm]

I bought 2 yellow ??? can't remember the name off hand but they were 900 cold cranking amps EACH i think i dropped about 200.00

[dulliesmoke]

well i tested the battries and one of them only has about 650 out of the 780 cold cranking amps and the nice tester i have at work( im a mechanic) tells me that the batt. needs to be replaced and that the alt. and starter are both good. so i guess its time for batt's. we carry exide and i can get them for around 120 for both.

[99Smokin73Stroker]

Turbo were those Optima batteries?

[Turbo Rushmmm]

ya know what i think they were. i will have to check

[99Smokin73Stroker]

I would guess that they are, I don't know of any other colored top batteries.

[dulliesmoke]

well after replacing both batt. and having the light still on, and testing the alt agin i came to the conclusion that the alt was junk. when i changed it out the term. on the back was all corroded up and crappy looking and i broke the term off. so its all fixed and the batt. were not a bad investment cause they were 5 years old anyway.