Low oil pressue light at low rpm

What is your oil pressure gauge doing? Low oil pressue will cause lifter sound. Check your oil. A small exhaust leak will sound like lifters also, but generally will go away after the exh manifolds heat up, if they have a small crack.

Have you checked oil level?

The oil pressure may actually be low. Remove the sensor and connect an oil pressure testing unit in its place. Take the readings at idle and usually also at 2000 rpm. Not sure about the 2000 but the service manual will give you the test specs. Compare your readings to the min/max given in the manual.

Your problem is not the oil pressure sensor, it's because your idling is going too low. If you raise the RPM slightly the light goes out. 650rpm is a little low. I think your car has an Idle control valve ... or look if it has an Idle position sensor. I suspect you have an issue with that.
Hope this helps.

Sam

Main bearings on the crankshaft are bad. The reason for the noise is that when the oil gets hot it thins out, thus causing low oil pressue thru the crank bearings. This in turn doesn't push enough oil the the cam lifters. causing them to chatter.

THAT MEANS ENGINE IS NOT GETTING (FLOW) SUFFICIENT/ REQUIRED OIL AT THE HIGHER RPM. WHEN REQUIRED LUBRICATION NOT TAKES PLACE THE METAL PARTS CREATE MORE HEAT DUE TO FRICTION. THIS WILL LEADS TO OVER HEATING OF ENGINE AND ENGINE GET SEZED.
HENCE PL DONT RUN THE ENGINE AT HIGHER RPM AND DO THE REPAIR IMMEDIATLY.

SOLUTION:.

THE CASES MAY BE,
1.LOW LEVEL OF ENGINE OIL AT ENGINE. PL CHECK THE OIL LEVEL BY CHECKING THE OIL DIP.
IF SO POUR SOME OIL AND CHECK.
2. IMPROPER QUALITY OF THE OIL, WHICH NOT WITH STANDING AT HIGHER RPM.
3. LOWER VISCOSITY (THICHNESS) OF THE OIL MIGHT HAVE USED, INSTEAD OF RECOMMENDED ONE. IF SO OIL IS THE PROBLEM REPLACE RECOMENDED OIL IMMEDIATLY.
4.LOOK IN TO THE OIL PUMP PRESURE ETC., OR CHOKE IN ENGINE OIL FEEDER LINES.

iF NOTHING ABOVE ONE PROBLEM OF ENGINE SHOULD BE MONITOR BY COMPUTER WITH SERVICE STATION.

TAKECARE,
RGDS, JANA

U are on the correct rack suspecting a clogged oil screen or a pump that is below average at low engine speeds.

The only access way for oil pan replacing is from the bottom side of the engine (car). This operation needs to remove the bottom engine plastic cover.

Hi, this is an oil pump issue. i recommend replacing this device and the oil screen as well.

The oil pump is a device that distributes the oil throughout the engine. at high rpm's the demand on this device increases dramatically and, if it is malfunctioning in any way, this high demand can not be met and the needed lubrication will be shorted, therefore, tripping the oil light. Most damaged oil pumps can produce enough pressure during low idles but, when the rpm's are increased, the malfunctioning pump will fail to meet expectations. this will cause low pressure and inadequate oil flow. this can also damage the block in time if not corrected.

I would do a quick oil level check to make sure of proper oil level. if the oil level is proper, you will need to replace the oil pump asap. if the oil level is low(1-2qts low), just add to full mark and, run a test drive. if the light illuminates once more, this will confirm oil pump failure and it will need to be replaced.

Remember to replace the oil screen as well.

Please rate and god bless:)

Depends on the model...I believe your engine is losing oil pressure. You may have a crack in your oil pan or bad oil pump. Oil Pressue sensors or usually located somewhere near on on the oil filter mounting.