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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
2019 Cylinder Head Temps
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<blockquote data-quote="FordTechOne" data-source="post: 1525302" data-attributes="member: 35543"><p>Nothing to be concerned about. The CHT is literally measuring the temperature of the cylinder head itself, not the coolant, which is why it will read significantly higher than ECT under a variety of conditions. The CHT sensor is located on the rear of the passenger side cylinder head, below the CMP sensors. </p><p></p><p>The purpose of the CHT is to prevent an engine overheat condition in the event that a significant loss of coolant occurs. Once the ECT is no longer surrounded by coolant, the readings will not be accurate. This causes ECT to drop while actual engine temperature is increasing. As the CHT is reading the cylinder head temp and not coolant temp, the readings will remain accurate and the PCM will know you enter limp mode/fail safe strategy.</p></blockquote><p></p>
[QUOTE="FordTechOne, post: 1525302, member: 35543"] Nothing to be concerned about. The CHT is literally measuring the temperature of the cylinder head itself, not the coolant, which is why it will read significantly higher than ECT under a variety of conditions. The CHT sensor is located on the rear of the passenger side cylinder head, below the CMP sensors. The purpose of the CHT is to prevent an engine overheat condition in the event that a significant loss of coolant occurs. Once the ECT is no longer surrounded by coolant, the readings will not be accurate. This causes ECT to drop while actual engine temperature is increasing. As the CHT is reading the cylinder head temp and not coolant temp, the readings will remain accurate and the PCM will know you enter limp mode/fail safe strategy. [/QUOTE]
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