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First, check the gauge. Should have a single wire on the driver side of the engine, near the oil filter, connected to the oil pressure switch. (Assuming it is an electronic gauge) Unplug it from the switch and clean off all the oil and dirt. Ground the gauge by touching the end of the wire you unplugged to a metal surface on the truck. Check the gauge. It should move substantially to the right while grounded. If it does not, your gauge is bad. If it does, plug it back on and see if it works now that it is clean. If it does not, first try replacing the oil pressure switch. It's only a few bucks. Still low, try a mechanical gauge to get an accurate oil pressure reading. If the pressure is actually low, it means major engine work ahead.

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Q: You have a 1988 fullsize bronco and it says your oil pressure is low but it is getting oil to the top end so what could it be and how can you fix it?
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