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Q: Oil pressure rises high then suddenly drops and water temp shows hot veh not hot on 1998 Ford Expedition

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Replace battery only after 11 mos. while driving oil pressure climbs to high and all of a sudden drops and water temp shows hot. Drove with scanner and read water temp normal 198 degrees this all happened right after battery replaced any ideas.
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Disconnect and clean the battery posts, and terminal clamps then reconnect. Afterwards complete a drive cycle to allow the the pcm to relearn the engine and transmission. Your owners manual should have the drive cycle under battery replacement section.
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