Alarming Sound - The only audible alarm used in Newells of this vintage was a high coolant temperature warning. Most of these alarms included an engine shut down feature if the temperature continued to escalate. If your instrument panel gauge appears to be working correctly and did not show a coolant temperature in excess of around 215 degrees F., the alarm is probably going off a bit prematurely.
We suggest that you confirm the accuracy of your dash gauge against a manual gauge that a mechanic can install at the engine. Further, from the circumstances you described, it sounds like the alarm indeed may have been warning of temperatures approaching the problem point. So you should exercise caution when the alarm sounds, as your engine may be getting close to overheating and damage, or the engine shut down may activate, with immediate loss of all engine power.
To cool properly, Newells of this vintage require regular, thorough radiator cleaning with a high pressure washer and engine degreaser.The condition of the radiator can be checked easily by using a mechanic's "trouble light" to shine through the core while looking through from the opposite side. The radiators eventually experience damage from small stones and debris in the air blast, and require recoring or replacement. We suggest that radiator maintenance, repair, and replacement as required is more economical than repairs that can be required after an overheat.
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