Recently, I had a battery indicator icon show up on the dash...I revved the engine and it went out...tonight, all of the indicators went to zero and after switching the engine off, it would not restart...solenoid made a clicking sound as if it had a low battery...btw, it is the original battery in an '05 F150 Lariat...is it the battery?, the alternator, the voltage reg.? or a low voltage cutout that I am not aware of...any ideas?

 

battery for sure, it makes these trucks do some crazy things, replace your batteyr nad you should be fine

 

The voltage regulator is internal to the alternator.

After replacing the battery, you might want to get the alternator checked, it's rare for a battery to suddenly go bad all by it's lonesome.

 

if its original from 05 im suprised it lasted this long... if a battery wont hold enough charge to turn over the motor its usually dead..

 

My 2003 did this about 2 mounts ago and it was mt alternator... take it off and have it cheacked at an auto parts store.

 

I'm not, I'm still running the original battery in my '04 F150, my wife's 2002 Taurus was still running the original battery until the alternator died and killed the battery.

Modern batteries aren't like the old lead acid batteries, they'll last a long time if they're not abused. (the new ones are still largely lead acid, but that's where the simlarities end)

 

Thanks, to all... I will replace the battery in the morning and go from there...

CTB

 

Get the alternator checked before you drive any length of time with the new battery. If there's a problem with the alternator, all you'll accomplish is killing 2 batteries.

 

buy an optima battery

 

With all the issues I've seen on performance car forums about the Optima batteries they don't seem worth the extra $$$.