Very often the voltage at the gauge is NOT the voltage at the battery where the alternator is hooked to. So the gauge is down stream, and measuring voltage at the cluster and this voltage is usually lower due to small wires and bulbs and other loads on it. Some times even have a foil circuit board on the back of the cluster that can have coorsion on it and on its connections. Cleaning all the connections will usually fix the problem. Remember the alternator has a voltage sense lead and it bring that point up to 14.2... turning an the headlights, heater, a/c could in fact bring other parts the wiring system down in voltage pending again on wire size, relay contacts and other factors. Dodge pickups have problems with a ground under the battery tray cause the over drive to hunt due to a .5 volt drop.. .enough to screw up the computer control.
But.. if it aint affecting the driving part, it probably aint worth chasing.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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