I HAVE AN 82 FORD 150 XL 6 CYLINDER 4.9 L ENGINE. MY ALTERNATOR SEIZED WHEN I WAS DRIVING. I REPLACED IT WITH A REBUILT ONE - 100 AMP. THE NEW ALTERNATOR IS NOT CHARGING THE BATTERY. THE VOLTAGE IS 12.3 THE BATTERY IS A BOSCH PREMIUM POWER PART #35-640B / CCA O DEGREE F 640 / CA 32 DEGREE F 770 / RC MIN 25 AMPS: 100 . THE BATTERY IS APPROX. 5 WEEKS OLD. I HAD TO REPLACE THE REGULATOR APPROX. 7 YEARS AGO, WHEN ANOTHER BATTERY FAILED. DID I DAMAGE THE BATTERY OR THE ALTERNATOR. IS THIS BATTERY GOOD ENOUGH?
With the engine running, look for around 14.5 volts with a meter across the battery. You could well have bought a dud alternator here, but be aware that if the battery leads are disconnected at any time with the engine running, then the alternator will fail.
John
May 2009
you need to do a load test on battery to see if it is holding charge take to auto lec to test voltage out put
mkarz
May 2009
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vans.