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Old 05-11-2010, 05:05 PM   #1
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Default 2002 Bonneville: Oil pressure gauge reads sky-high

I believe it'* an instrumentation problem:
The oil pressure gauge reads close to 120 psi and there are no other apparent symptoms. The reading does vary a little with engine temp and rpms, as you would expect, but stays way above normal.

The self-test after starting the engine seems normal, from what I remember. (Gauge goes to max, then min, then settles at the measured pressure level, normally 40-60 psi, but much higher now)

Ideas anyone?
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Old 05-11-2010, 05:06 PM   #2
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need a oil sender switch try rock auto
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Old 05-11-2010, 05:09 PM   #3
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That'* what I guessed. Where is the switch located?
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Old 05-11-2010, 05:10 PM   #4
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just above the oil filter
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Old 05-11-2010, 05:11 PM   #5
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Thanks Steve..."You da Man"
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Old 05-11-2010, 05:15 PM   #6
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$30 at your local O' Reilly store as well
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Old 05-11-2010, 05:16 PM   #7
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Check the plug first. Might be loose or corroded. 120psi is no signal from the sensor.
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Old 05-11-2010, 05:30 PM   #8
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Thanks Guys,
One more dumb question:
If I do have to replace it, I suppose I'd wanna do it during an oil change to avoid a mess, right?
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Old 05-11-2010, 05:36 PM   #9
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during an oil change would be best however if you did it other than at time of oil change only a little will leak out
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Old 05-11-2010, 05:40 PM   #10
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Yeah, even if you do it during an oil change after the oil has been drained some will come out of there. It'* not a lot either way though.
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