Oil pressure insufficient. please what can i do please help me

You have to check your oil pressure you may have a oil pressure problem ,also drain the oil to see if it's not clogging up the oil strainer in the base pan, check your oil filter as well

check for correct oil level in the sump first
this indicates insufficient oil level and the surge of the oil when stopping is allowing air into the pump and putting the light on

the oil pump should have been PRIMED before running the engine , this is done by connecting a electric drill to the oil pump drive and run drill for 3-5 mins , this will pump the oil into all the galleries etc so when engine is started the oil is already around the smaller intricate areas , the oil pump alone will not always get to these parts after having the head removed , that is also the reason for the rise in temp

instructions:

1 Turn the ignition key to the "II" position.

2 Check the lights on the dash. You should see a variety of dash lights light up. One of those lights will be a "Check engine" light. This light should stay lit with the ignition key in the "II" position. The rest of the lights should go out. If the "Check engine" light begins to blink, you may have a problem with one of the vehicle's electronic components. Consult your owner's manual or call your dealership for possible servicing issues.

3 Start the engine. The "check engine" light should go out after a few seconds. If it does not, this can indicate either a maintenance interval has been reached or a more serious problem with the vehicle's emissions control system. Again, it is advised to consult your owner's manual or call the dealership for service.

4 Check for an illuminated "SRS" light on the dash. The SRS light indicates a problem with the supplemental restraint system, i.e., the airbag, on the Camry. This needs to be serviced by a professional mechanic.

5 Check for an oil light on the dash. The oil light is in the shape of a small oil canister. When this lights up, it indicates low oil pressure. Low oil pressure is caused by a blockage in the system, a weak oil pickup or oil pump, or low oil levels in the engine. Check and see if your Camry is overdue for an oil change. It is recommended that the oil be changed at 5,000 miles or every six months.

6 Check for the low fuel warning. The fuel light on the Camry is on the fuel gauge near the "E" on the gauge face. The low fuel light means that you have to refuel your vehicle.

7 Check for the seat belt warning light. The seat belt warning light is a picture of a figure wearing a seat belt. If your seat belt is unbuckled, then this light will illuminate (along with a warning chime) indicating that you should buckle up.

8 Check for an orange car with lights on (on the dash lights). This warning light indicates that one or both of your brake lights has failed, or the electrical resistance in the bulb filament indicates that it is about to fail and will need service soon.

BMW PARTS

Did you compare what your dash gauge read when it was acting up and compare it to the manual gauge at the same time? I know you said you used the manual gauge and it read fine so if you get a proper reading out of the manual gauge and an improper reading out of the dash gauge then your dash gauge needs addressed.

The oil pressure switch or sending unit is a unit that receives an electrical signal showing what your cars oil pressure is.And yes it does partially does let you know when there is a problem somewhere in the oil system.For example if your filter gets clogged up your oil pressure will go down and then go up when you accelerate.If there was a leak in the system first you would probably see the leak And if the oil pump or oil pump shaft were to break you would have no oil pressure.So you can see the importance of having an oil pressure switch.I feel there are 2 guages that are important to watch are your oil guage and water temp guage they can tell you allot about how your car is operating.

Most likely cause for this is the Oil Pressure Switch, also commonly known as the Oil Sending Unit. It's a sensor that when failing, will indicate low oil pressure either due to a lack of oil or insufficient pressure through the oil line.

Some cars, not sure about yours had a switch on the fuel pump, if the oil was low, they wouldn't start. Get the oil back up the re and see what happens. The oil sending switch must be for pressure and not level, it will register 60 lbs pressure with only 1 qt of oil in there, try it, hope it helps.

Hi. This issue has several causes, but the oil light indicator is a strong sign of low pressure in the engine. This will cause the engine lubrication rate to drop, thus, producing a illuminated oil light, and erratic Oil pressure readings. The necessary actions are to have a manual oil pressure test ran on this engine, asap. When running a manual oil pressure test, you will discover if the true oil pressure is low, or normal. If the test proves that the oil pressure is, indeed, low, this will confirm that the Oil pump is suspect.

Now, if the true readings given during the manual oil pressure test are indicating that the pressure is normal, this will be the result of a failed sending unit(oil pressure switch).

Most important thing you need to do is to establish the actual oil pressure. put a mechanical gauge on the engine and read real oil pressure. If pressure is low (min is 15psi, I prefer to see at least 20 at idle) there is an internal problem...bearings etc. If pressure is good, sending unit has failed...replace it. I would not drive it 'till the oil pressure is verified as being safe. You might get lucky and someone just forgot to plug in the sending unit, but it must be checked!!!
good luck