Some Hyundai Santa Fe owners report experiencing high engine RPMs, reaching 2000 RPM without any dashboard warning lights, which may indicate several underlying issues. These high RPMs could be linked to problems with the crankshaft position (CKP) sensor or engine speed (RPM) sensor, suggesting a range or performance issue. In colder weather, some owners notice that the engine revs higher upon startup but typically returns to normal as the engine warms up. Additionally, issues with the automatic choke system may contribute to elevated RPMs, particularly if the revs decrease when the engine is warm. Vacuum leaks, especially around the purge valve hose behind the inlet manifold, can also lead to erratic idle and high RPMs. Owners experiencing this issue are advised to check for vacuum leaks, inspect the CKP and RPM sensors, monitor engine behavior in varying temperatures, and consult a mechanic if the problem persists to ensure proper diagnosis and resolution.
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