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Discussion Topic:
Anp meter
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silverchief |
12-17-2011 @ 10:35 AM
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Senior
Posts: 519
Joined: Oct 2009
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If Amp meter flutter on my 46 stops immediately with a pull on the headlight switch - does that point to any specific "most likely" cause? Wiring is original. Also, it seems to diminish as the engine (and regulator?) warm up.
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ford38v8 |
12-17-2011 @ 10:51 AM
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Senior
Posts: 2739
Joined: Oct 2009
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Silverchief, Yes, but in this case the "cause" is not bad. All it indicates is that your regulator was doing it's job, and when you switched on the headlights it remained on, rather than buzzing on and off. Also, the engine warm-up itself is not related, but the time required to recharge your battery after cranking the starter is the other reason the flutter stops.
Alan
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supereal |
12-17-2011 @ 11:09 AM
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Senior
Posts: 6819
Joined: Oct 2009
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Have your battery checked to see if it has developed one or more weak cells. Sulfation of the plates can raise internal resistance, particularly when the battery is cold (and/or old). The regulator then tries to decide if the battery is fully charged or not. When warmed up, the battery then accepts a charge, causing the ammeter to calm down. A poor battery cable connection, or other place, can produce the same problem.
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37RAGTOPMAN |
12-17-2011 @ 2:06 PM
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Senior
Posts: 1943
Joined: Oct 2009
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60+ year old wiring, might a good idea to change it even if your car is running correctly. but for sure make sure you disconnect the battery when not used for sure, be sure to check you wiring for fraying and bare spots, is the insulation cracking? my 3 cents 37RAGTOPMAN
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silverchief |
12-17-2011 @ 3:21 PM
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Senior
Posts: 519
Joined: Oct 2009
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Supereal, It is a brand new Optima that I brought up to full charge with a low amp charger the same day. HOWEVER, the car is covered for the winter, and every couple of weeks I just start it and run it on fast idle until it gets up to operating temp. To do so I just stick the neg cable on it's post without any tightening whatsoever, and based on your reply I would suspect his very loose connection may be a large part of the problem. Thanks guys.
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supereal |
12-17-2011 @ 8:45 PM
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Senior
Posts: 6819
Joined: Oct 2009
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Tighten it and see if the problem goes away. I put the "green knob" switches on my cars to disconnect the battery. I try not to run cars unless I can go at least ten miles. Otherwise, the exhaust system loads up with moisture, and the oil doesn't get hot enough to boil off moisture, either. Running a vehicle without driving it causes more harm than just letting sit. I do keep a trickle charger on the Optima.
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silverchief |
12-19-2011 @ 12:28 PM
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Senior
Posts: 519
Joined: Oct 2009
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Thanks Supereal I will take your suggestion.
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