High oil pressure and ticking noise now

[cfush]

Hi. I have a 2005 Nissan Pathfinder with about 104,000 miles. Recently my oil pressure gauge has been pegged on high and I am getting a ticking noise when I first start it. It eventually quiets a bit but still has a slight tick. I am using 5w30 oil. Any help is greatly appreciated. Thanks!!

I have heard that I need to replace my oil pressure sender. I have also heard that I have a blocked oil channel in my engine block.???

[Towncivilian]

What oil filter are you using? What is the maintenance history regarding oil changes?

[cfush]

The filter was replaced after this started happening but I don't know what it was replaced with or what was replaced. The maintenance history is spotty. Not consistent.

[Towncivilian]

Then it indeed possible that some deposits have built up in an oil passage or elsewhere within the engine. I would run several 3k miles oil changes with something like Pennzoil Yellow Bottle 5W-30 (lauded, or perhaps simply marketed, for its cleaning ability) and SuperTech ST7317 filters (which are decently constructed, unlike Fram filters which are more expensive). This would help clean things up internally. Do not run something as harsh as Seafoam except maybe in the fuel, as this can loosen up large deposits and potentially clog an oil passage.

[ARKQX33V6]

You simply cannot rely on automotive oil pressure gauges because they are secondary. By that, oil pressure, actual oil pressure is not truly indicated by the gauge but a transfer of pressure into an analog based electrical signal. If the transfer gets messed up along the way the indication may change. And there are a few things that interfere with the gauge's reality.

Electrical modification for gauges is from 12 V to 7 V and if the voltage is wrong the indication is not reliable. The gauge and gas level or even the gauge cluster can be a different voltage that the rest of the car and this modified voltage usually comes from a regulated supply. This supply could be off.

P to I, pressure to current relies on transference and again if out the reading can be out. Some gauges have built in resistance and these resistors or in line resistors can fail and again cause mis-reading.

A truer test is to use a true actual pressure gauge that indicates with a pressure tube and reads pressure as per displacement of actual pressure, these gauges are connected to the pressure port via a hollow tube and transfer actual displaced pressure from that orifice to the gauge.

With a truer reading you can make a decision about your engine's oil flow, blockages if any, but deciding the facts around an automotive indicator may lead you to frustration and wrong conclusions.