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SERVICE DIAGNOSIS |
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Condition |
Possible Cause |
Correction |
All Gauges Read High |
(a) Defective constant voltage limiter |
(a) Test voltage at output (A) terminal
(stuck points or an open heater coil), of constant voltage regulator.
A steady voltage of approximately 12volts indicates limiter is malfunctioning. A voltage limiter that is operating properly should
normally have a voltage at the output terminal that is fluctuating
between 0 and 7.0 volts. It is, of course, impossible to obtain an accurate voltage reading. The fluctuating voltage reading will, however, indicate that the constant voltage regulator is functioning. |
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(b) Cluster not properly grounded to panel. |
(b) Tighten cluster mounting screws. |
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Gauge Pointers do not Move when Ignition Switch is Turned "ON". |
(a) Malfunctioning constant voltage limiter or an open circuit on battery side (input of limiter). |
a) Test voltage limiter as outlined
in "Testing Gauges in Vehicle". Check wiring, repair or
replace as necessary. |
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Temperature Gauge Indicates Normal Operation. But the Fuel Gauge Indicates a Higher or Lower Fuel Level than Actually Exists |
(a) Fuel tank sending unit or instrument panel fuel gauge is defective. |
(a) Test sending unit and gauge as outlined
in "Testing Gauges inVehicle". |
(b) Fuel tank is improperly grounded. |
(b) Test fuel tank for a good ground. |
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NOTE: Testing the system with the
tank sending unit positioned for both "empty" and "full"
is usually sufficient to determine the calibration in the range
between these positions. |
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Fuel Gauge Indicates Correctly But
Temperature Gauge Indicates Higher or Lower Temperature than Actual
Engine Temperature |
(a) Defective instrument panel temperature gauge, wiring or defective temperature sending unit in engine. |
(a) Test wiring, repair or replace as necessary. Test gauge and sending unit as outlined in "Testing Gauges in Vehicle". |
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Erratic Temperature Gauge Operation |
(a) Loose or dirty electrical connections. |
(a) Clean and tighten all electrical
connections and recheck the gauge operation. |
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Erratic Operation of Fuel Gauge |
(a) Loose or dirty electrical connections or faulty fuel tank sending unit. |
(a) Test the fuel gauge sending unit,and
proceed as follows: Make sure that the fuel tank sending unit is grounded
to the tank and that the tank is grounded to the frame. |
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Dodge 1963 63 Polara mopar Polara 383 426 318 313 330 440 dodge dodge 63 63 63 1963 1963 mopar mopar restoration restoration max wedge wedge ram ram polara 330 440 220 dart 880 technical details production New Zealand Kiwi New Zealand figures |
Copyright © 2001 Bruce Cresswell |
