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Hi all,

My temp guage reads 260 but the engine does not overheat or lose any coolant. Changed the thermostat to the correct Cleveland thermostat - 180 - , changed the water pump (new), changed the temp sender (new and in the block), still no change on the guage so I added an aftermarket guage and sender (guage is temporary and not mounted) as well as the factory ones just to compare. Factory guage reads 260 while the aftermarket guage never goes over 195. Now my question: Could it be a grounding problem with the guage and does the Veglia guage have some kind of resistor in the guage or circuit that makes it not work properly? It worked fine until about a month ago. Should I try another Veglia guage? Or will the problem maybe persist? This has become annoying as the weather is hot and I don't get a true reading and don't want any overheating problems.......I don't know much about electrical issues.

Thanks in advance,
Steve
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Steve,

A resistor in the gauge circuit will only make the reading lower. The gauge is notorious for issues with grounding. Try adding a separate ground wire from the gauge to a really good ground point.

If that doesn't solve the problem, you may have a bad gauge or the wrong sender.

One other possibility is that the wire that goes from the sender to the gauge is contacting a grounded surface, meaning that the wire's insulation has been worn off (somewhere). As a test, you could run a temporary wire from the sender to the gauge. I assume that the gauge reading slowly climbs to the 260* mark rather than moving quickly once the key is turned on.

John
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