The mechanical gauge would be more accurate, for a "True Test"
Still, you would have to take things loose in the same place to hook it up. This would be done where the sender is screwed into the engine.
Yeah, a new sender might be the answer. But it could be the Gauge in the dash, these might be the "Best Scenario", 2 possible problems.
One, set up like in my pic, would allow you to drive down the road and observe the readings. Just run it out the rear of the hood and thru your window.
I just checked Autozone online--several senders--$8-$40.I do not think you have a 4 cylinder, maybe a 3.8L 6cyl?
Keep in mind, it may not be the gauge or sender, at all, could be more serious, like engine wear, oil pump, or the oil pressure relief valve.
If it's not the instruments (proven with a mechanical gauge exhibiting the same symptoms as you have now) Maybe substitute a quart of oil stabilizer instead of a quart of oil next oil change. This may improve your pressure.
Your turn.3 of us now, on top of your question!
We'll hang with you, keep us informed!
Monday, May 9th, 2011 AT 6:23 PM