This is an unusual problem. Best to start with a new gage to verify the oil pressure.
Some air purifiers do require a filter to be changed others have a filter that can be cleaned.
Yes
No, not an external one. However there is a mesh filter screen contained within the pan of the transmission which can be cleaned when/if the pan is dropped.
It will cause those and eventually will shut down your engine until the filter is changed or cleaned.
An air purifier's filter should be changed every year, with the pre-filter cleaned or replaced every few months, depending on the conditions that the device operates in. Always follow the manufacturer's instructions.
A Bionaire humidifier with a permanent filter will never need to be replaced. Yet it is necessary to make sure that the filter is cleaned properly on a regular basis.
What was your clean starting pressure? When was the last time that you backwashed the filter? When was the last time that you broke the filter down and cleaned the grids in the proper manner? Sounds like your filter is getting dirty. k
If pressure drops that indicates that water is going through the system more rapidly. If the filter has been changed for a new one and is undamaged.great the leaf baskets are clean Great It sounds like the filtration side of things are fine . The only things left that can cause this sort of change would be the pump or the impeller that drives the water.
Probably because it is clean, leave it on the filter setting for a while and you will find that the pressure will increase as the filter gets dirtier, when it get high (usually in the red ) you will have to backwash.
The tank should be drained and cleaned. The fuel filter needs to be changed, and the injectors might have to be cleaned.
My 2003 van was doing the same thing. The screen in the oil pan was clogged. Had the oil pan dropped and cleaned out and that seems to have solved the problem.
have the tps sensor changed