Compression Ignition Addict
Join Date: Jun 2008
Location: Brewster, NY
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The oil pressure gauge is a simple switch. When oil pressure is at 7 lbs or greater the switch is closed and the dash gauge reads normal (or half way). When under 7 lbs it reads none, or low. The switch (sending unit) is located in the oil cooler housing, specifically in the passageway which leads to the turbo, but after the oil filter.
That said, you should first check your oil level, be sure you are filled up. Second pull out the oil filter. Is it the Motorcraft version or another brand? If everything is good, you may have a low pressure oil pump issue.
When the gauge drops, is there any performance issue as well?
2003 F-250 Crew Cab Short Bed Lariat PSD 6.0 Automatic FX4 Edge Insight with EGT Probe. Coolant Filter. All 6.0's need gauges
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