2001 Ford F-150 Oil Pressure Drops

FORD F-150
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KJT3489
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  • 1 POST
I have a 2001 Ford F-150 with 94,000 miles. The truck has the 4.7 V8. The oil has been changed every 3 to 4 thousand miles since I bought the truck new. When I start the vehicle in the morning the oil pressure gauge will drop to 0 after about 20 seconds and stay there for about 10 to 20 seconds. It will do the 3 to 4 times and then be ok for the rest of the day regardless how many times I might start it. When the gauge is working it is just above the center mark. Do you know what might cause this?
Jan 23, 2007 at 8:12 AM
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BOOTDOG
  • ✓Experienced Mechanic
  • 665 POSTS
replace the oil sending unit. it's a pressure switch that screws in the engine block with a single wire hooked to it. they're inexpensive and any auto parts store should have one.
Jan 23, 2007 at 8:19 AM

Suggested Repair

Replace the oil pressure sending unit, a single-wire pressure switch that screws into the engine block. It is inexpensive and available at auto parts stores.

Conversation Summary

A 2001 Ford F-150 with 94,000 miles and regular oil changes shows the oil pressure gauge dropping to zero for 10 to 20 seconds after the first morning start, repeating a few times before reading normally just above center for the rest of the day. The expert recommends replacing the oil pressure sending unit.

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