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spqr67
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-- 08-13-2012 @ 9:04 PM
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After putting in a brand new Optima red top, my 50 won't turn over. She tries slowly, but no go. Additionally, there is a honking noise coming from the engine (no, it's not the horn  ) that I can only silence when I unhook the far right connection on the voltage regulator. Ideas?
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MG
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-- 08-13-2012 @ 10:55 PM
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Is there a chance you may have installed your new battery backwards? + Positive side to ground.
This message was edited by MG on 8-13-12 @ 11:23 PM
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wrosenkrans
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-- 08-14-2012 @ 6:15 AM
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I know the Optima's are supposed to be state-of-the-art in auto batteries, but I've now replaced two of them in my Model A's with standard 6v. In both cases they were needing a recharge every week. The standard 6v's may need replacing every 3-4 years, but they seem to be more reliable in my experience.
Wayne & Barb
'42 Super De Luxe Tudor
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spqr67
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-- 08-14-2012 @ 7:20 AM
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Nope, battery is hooked up correctly. My gut tells me it might be fuel related. The car ran when I had it hardwired into a 12v battery
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TomO
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-- 08-14-2012 @ 7:31 AM
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Your Optima may need a charge or you have a poor connection in the circuit. Use your volt meter to determine the source of the slow cranking.
If you have a trickle charger or a battery maintainer, hook it up to the battery and give it a slow charge for a couple of days.
Tom
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supereal
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-- 08-14-2012 @ 2:55 PM
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It is very rare to have a defective Optima. In almost ten years, I've never seen one. I'd bet on undersized battery cables or poor connections. The far right terminal on the regulator is connected to the generator armature post. If it is trying to "motor", you have a wiring or regulator cutout problem, which is likely related to your dead battery.
This message was edited by supereal on 8-14-12 @ 2:57 PM
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Stroker
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-- 08-14-2012 @ 4:43 PM
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A "self-discharging" Optima, most likely is from unidentified parasitic drains. These can be due to corrosion, or simply stuff that is left on. There is a good article in the current Hot Rod Magazine regarding the newest Optima charger. Absorbed Glass Mat (AGM) batteries are fussy regarding charging rates, and charger circuits. Many of the so-called
"dead" batteries simply need a charge. Many modern chargers don't respond well to the very
low internal resistance of AGM's. Some have suggested hooking a conventional lead/acid
plate type battery in series with an Optima just to wake-up the charger. My guess is that
if you are using an Optima battery, you should probably also use their charger.
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