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Corvette
C3 Forum
fuel gauge resistor getting hot
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<blockquote data-quote="my 1999 coupe" data-source="post: 101657" data-attributes="member: 3328"><p>Mywyld 75</p><p></p><p>The resistor on the back of a gauge is used As a shunt or bypass for excess current to protect the gauge . It may not be unusual for this resistor to run hot. Resistors usually have a series of bands on them of various colours to indicate there value. These are read from left to right . If you can give me these colours along with the voltage across the resistor we can calculate the current drain and wattage. The diameter of he resistor is also important as it tells you the wattage of the resistor. 1/4 inch Diameter is a1/2 watt resistor . If smaller in diameter it will be a 1/4 or 1/8 resistor.</p><p>With due respect to NASCAR 03 a bad ground would actually increase the resistance in the circuit and cause less current throw the bypass resistor casing it it run cooler. </p><p>There would be a warm area around the poor ground. </p><p>Does the gas tank have a sender unit that you can access ? </p><p>Do you have a service manual on your car?</p><p>I will do more research on your when I get home to see if I can help you any more .</p><p></p><p>Charlie</p></blockquote><p></p>
[QUOTE="my 1999 coupe, post: 101657, member: 3328"] Mywyld 75 The resistor on the back of a gauge is used As a shunt or bypass for excess current to protect the gauge . It may not be unusual for this resistor to run hot. Resistors usually have a series of bands on them of various colours to indicate there value. These are read from left to right . If you can give me these colours along with the voltage across the resistor we can calculate the current drain and wattage. The diameter of he resistor is also important as it tells you the wattage of the resistor. 1/4 inch Diameter is a1/2 watt resistor . If smaller in diameter it will be a 1/4 or 1/8 resistor. With due respect to NASCAR 03 a bad ground would actually increase the resistance in the circuit and cause less current throw the bypass resistor casing it it run cooler. There would be a warm area around the poor ground. Does the gas tank have a sender unit that you can access ? Do you have a service manual on your car? I will do more research on your when I get home to see if I can help you any more . Charlie [/QUOTE]
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Corvette
C3 Forum
fuel gauge resistor getting hot
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