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2000 Mercury Mountaineer Base 4dr 112 WB

2000 Mercury Mountaineer
Trim Info:
Rear Wheel Drive, 4 Door, 2WD Sport Utility Vehicles
16 mpg city / 21 mpg hwy
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March 27, 2013, 6:16 am

Lamel J
 

Question: My oil gauge jumps.

When I start my truck & drive it for a while, my oil gauge drop to low pressure until I start moving. Is the gauge faulty or is the pressure low. A mechanic says that there has been a problem with the gauge, crankcase is full of oil. How bad is this problem.


April 8, 2013, 4:52 pm

Elizabeth K
Expert Mechanic

If the gauge is reading low occasionally, then use an external oil gauge to test if the reading is accurate. The oil pressure sending unit could be bad, or the gauge could be bad. If your mechanic has already tested one or the other, and found there to be a problem, replace the bad part. If the oil pressure is accurately reading low oil pressure, you may have a low oil level, a worn oil pump, or internal engine wear.


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