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This may indicate you need to put a higher weight of oil in the engine. Or the oil in the engine is old and has thinned.

jeeps don't actually hold much pressure under idle when they are warm if your check gauge light isn't coming on then you have no worries

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Q: Why would your oil pressure in a 1997 Jeep Cherokee drop to almost 0 when the Jeep is warm and ideling?
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