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Evening everyone. I'm having issues with my truck (`85 F150 XLT Lariat reg. cab, carburated 351W auto). I've recently replaced a puked battery, and now my truck seems to be running strictly off of the battery and not the alternater.
I had the alt. checked and was told it was fine. I traced all of the wires running from the alt to the battery, the battery to the starter, etc and everything seems fine. Started relay seems fine as well.
The truck starts fine, until it runs the battery down ... then it's back to the charger in my basement.
Anything that I might be missing ??
Have you checked for a blown fusible link? If it is open you will not charge the battery. Check for power at the back of the alternator with the engine not running. If there is no power, then you fusible link is open.
A fusible link is a colored rubber thing in the wire. It should have one in the large wire going from the alt to the large post on the starter solenoid.
Thanks for the help guys. Turned out that the voltage regulator had puked right along with the battery. Got the new one put on, and all is well.
Again, thanks .... Jeff
I was about to suggest the voltage regulator as that is the leading cause for a puked battery. If the voltage regulator contacts stick closed, the alternator overcharges the battery causing it to boil and in some cases catch fire, and in the rare instance, explode. Lucky you got the cause of the problem resolved. Good job!
Batteries these days are just as apt to be bad right off the shelf as any other electrical part.
They sulfate,develop a short inside themselves right from the get go.
They don't make them like they used to.....because they want to sell more of them
Yup!
Is a new battery really a new battery or a recycled old battery in a new case? Once the cells are removed from an old battery and cleaned, if there is enough remaining metal, guess what??? It becomes a new store brand battery with a 24/36 month warranty.
In the good old days all car batteries were sold off the shelf dry. An electrolyte package came separate with the battery and the battery had to be charged before use. Can anyone think of a reason why the batteries were sold like that?
Last edited by 82F1507.5; Apr 7, 2007 at 04:24 PM.
Yup!
In the good old days all car batteries were sold off the shelf dry. An electrolyte package came separate with the battery and the battery had to be charged before use. Can anyone think of a reason why the batteries were sold like that?
I was a little surprised myself when I went to pick up my "new" battery last week. My wife dropped me at the front door, and I said I'll just be a couple minutes .... thinking the exact same thing. Add the electrolyte, and away I go. Welp, the kid pulls the battery off the shelf, goes directly to the charger with it, and tells me to come back in 25 minutes. Times have sure changed over the past few years ....