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What causes a 95 Cadillac STS to overheat the thermostat has been replaced and it only runs hot at high speed?
Wiki User
∙ 16y ago
Microscopic crack in the head that will open up at high RPMs, subsequently jettising the coolent and overheating the engine. Have the heads X-rayed, than have a good aluminum welder weld it.
Wiki User
∙ 16y ago
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