IN DECEMBER, MY 2002 HIGHLANDER ENGINE SEIZED UP. THE SHOP MANAGER EVENTUALLY TOLD ME MY ENGINE HAD BURNED OUT DUE TO A MAJOR OIL LEAK. THIS WAS TOTAL SURPRISE AS I HAD REGULAR OIL CHANGES SO IT DIDN'T MAKE SENSE. I REFUSED TO PAY $4300 TO REPLACE THE ENGINE SO, I TURNED TO A LOCAL MECHANIC. THIS DIAGNOSIS TURNED OUT TO BE UNTRUE. THE MECHANIC WAS ABLE TO GET THE ENGINE RUNNING AND THE CAR SOUNDS GREAT. HOWEVER THERE IS ONE MAJOR ISSUE. THE OIL LIGHT CONTINUES TO TURN ON AND OFF. WHEN IT'S ON, THE ENGINE IS MAKING RATTLING SOUND. I PURCHASE MY CAR BRAND NEW OFF THE LOT. I'VE HAD NO MAJOR PROBLEMS UNTIL NOW. I'M A STUMPED!
Well take it back to you're mechanic and have him in stall a master oil pressure gauge and check teh oil pressure this will tell you if the engine indeed has low oil pressure or if the oild pressure sender is bad. also if it is rattling or knocking SHUT IT OFF you dont wana spend the 4-5 thousand to fix it im sure
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Its on the engine but you will have to specify the make and model of the car to get the exact location of the sensor. The light indicates low pressure so it is probably near the oil pump. Most of the time when the light comes on the oil level is too low, causing pressure to drop. You can check the oil level with the dip stick. Do not drive your car with the oil light on. Low pressure can cause significant wear on the engine in a short time and eventually cause the engine to seize up completely.
did your oil light come on as well?? Sounds like your oil pump is going bad just from what you told me.....Check your oil and make sure you have it full...
Dont run your engine with low oil pressure as it could seize especially if your oil pump isnt working.
Change your oil pressure sender. The oil pressure sender will usually break before the oil pump will. If you are driving with the oil light on and the motor has not seized the oil pump is probably all right.When your oil light comes on you need to turn your car off immediately so you do not damage your engine crankshaft and camshaft bearings. If you change the oil pressure sender and the oil light stays on then you should replace your oil pump before more serious damage happens to the motor.
you need to ask what grade of oil he used,if he used 5/30 then GET IT CHANGED to 10/40 ASAP.TOYOTA worldwide use 10/40 semi synthetic(regardless of your dealers say so)it is supplied by Castrol to toyota worldwide.(in very hot countries STD 20/50 is used.)
yes there is a oil pump in your engine you need to change the oil every 3000 miles or three months this will keep your engine clean but as far as help go all i can tell is that you need to take your car to a good shop and have them check out the inside of the engine so may have a serious problem.
if you know for certain that the sending unit is correct and the guage is accurate, then yiu may have big problems.....while the engine is running open the oil filler hole.. is everything wet with oil? or does it look dry or just a little lubed? you can allways install an aftermarket oil pressure guage(crappy tire) if you get the same results with that then you may have a week oil pump....worst case scenerio... need an engine rebuild as the moter may have wear issues.does the pressure slowly drop as the motor warms up? at idle ? does it jump up when you step on the gas?
The oil pressure sending unit is a sensor with an internal diaphragm, if the internal diaphragm is damaged , or the line to the diaphragm is blocked you can get this kind of fluctuation on the oil pressure gauge.
The oil pressure value must be read by installing a mechanical gauge near to the oil pressure switch and checking the pressure.
If pressure is ok, replace the sending unit. If there is a real pressure drop, check the oil pump.
If you still get fluctualtion after replacing the oil pressure sending unit, replace the oil pressure gauge.