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78 Posts
Hopefully simple>>>
The battery light came on last night near home. Just before I had noticed some occassional diming of headlamps momentarily. Today I started to drive and it remained illuminated. The belts all appear in good condition and tight. It spins the pulleys while running with no squealing. I checked the battery voltage and it was about 12.5v not running. When started, and running it drops to 11.8. Off it returned to 12.35 immediately. The fluid in battery is at the right level above the plates. The specific gravity is low approx. 1.2 and flirting between the Fair and Recharge line. Book says to trickle charge battery and retest. The battery is 3 1/2 years old. It runs long enough to charge battery when driving so Im thinking a charge is not the issue.
How can I measure to see if Alternator is working and giving proper output? Where should I sample with my voltage tester?
Thanks.
The battery light came on last night near home. Just before I had noticed some occassional diming of headlamps momentarily. Today I started to drive and it remained illuminated. The belts all appear in good condition and tight. It spins the pulleys while running with no squealing. I checked the battery voltage and it was about 12.5v not running. When started, and running it drops to 11.8. Off it returned to 12.35 immediately. The fluid in battery is at the right level above the plates. The specific gravity is low approx. 1.2 and flirting between the Fair and Recharge line. Book says to trickle charge battery and retest. The battery is 3 1/2 years old. It runs long enough to charge battery when driving so Im thinking a charge is not the issue.
How can I measure to see if Alternator is working and giving proper output? Where should I sample with my voltage tester?
Thanks.