6.4 l oil overheating - Ford Powerstroke Diesel Forum
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Old 07-08-2010, 07:23 PM
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6.4 l oil overheating

2008 6.4l with 60000mi, after driving for 15 mins I get a decreased engine power message and the engine temp guage spikes to max. Engine coolant temperature stays normal(200 deg approx), but engine oil temp increases to 260+. Ford dealer replaced engine oil cooler, thermostats,coolant and oil temp senders, water pump and front cover under warranty, but problem still persists. Thinking there is a coolant restriction somewhere going to the oil cooler, but not sure...any ideas?
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Old 07-09-2010, 11:16 AM
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Sounds like a bad oil cooler thermostat to me if it overheats that quckly and your coolant is normal temperature.
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Old 11-08-2010, 08:23 PM
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okay...dealer has replaced engine oil cooler 4 times(believe it or not) and just put in a new short block engine and oil still is running at 250- 260 degrees and coolant at 210...the only thing I can see is the turbo maybe running hot but that doesn't even make sense...any ideas cause i'm getting tired of taking this truck in and not getting it fixed, although the free shortblock engine was sure nice.
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Old 11-08-2010, 08:37 PM
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Possibly the EOT sensor, or if the radiator wasn't replaced maybe it is clogged
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