Question about 1999 Chrysler 300M

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My oil light is on and oil sensor has been replaced possible oil pump failure?

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If the oil is at the proper level and has the proper type of oil in it then it could be a bad pump or a clogged filter. Replace the oil filter and make sure you have the proper oil type in the vehicle. If this doesn't resolve the issue then look at replacing the pump.

Posted on Jul 12, 2010


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Oil sensor light and very anoying beep on 95 jetta 2.0

Very serious problem it sounds carefully there...could be oil pump problems..have some one to check sensor...first...then motors

Jul 09, 2016 | 1995 Volkswagen Jetta

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Cars no oil pressure

One of three things have happened. You may have either a bad gauge, bad sending unit or your oil pump gears have become too worn to pump oil. There are a couple other possibilities, but I have listed the main three. The others would be bad main bearings in the engine, a plugged oil port or your sensor wiring has become damaged. You have to look at the issue logically and think about what was worked on last in your car and did it have anything to do with the oil sensor system or was the repair anywhere near the oil sensor wiring? The other thing to think about is did this just happen all of a sudden or did the pressure drop gradually? A gradual drop would indicate mechanical failure, where a sudden failure would indicate electrical failure. This would be the preferred answer because a mechanical failure of your oil pressure would be very costly.

Apr 02, 2014 | 1988 Ford Mustang

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Oil light flickering on dash

Check/confirm the following (on 1987 models the wire harness in the engine bay is a known defect and the insulation is very prone to premature failure):
1) Oil level/condition/type of oil (15W40 is the general specified oil for these cars). To rule out low engine oil pressure have the system pressure checked by an accurate gauge installed in place of the oil pressure switch. The switch itself is screwed into the block, bottom left side if you are looking at the engine from under the hood (on the exhaust side). The sensor is indeed a switch - spring-loaded and normally closed (open when there is pressure).
2) The oil pressure switch wire is run around the front of the engine, secured by a sheath and clips. Check to ensure the insulation of the wire is intact and not chafing anywhere - trace it out carefully. It's a one-wire design, grounded by the threads of the sensor into the block. A good test is to disconnect the wire at the sensor and drive the car. If the light is still flickering, you have an intermittent short.
3) If the oil level is normal, its condition is good and of the correct weight, it is entirely possible that the oil pump strainer is clogged. This results in low oil pressure. The other possibility is that the oil pressure relief valve in the oil pump is sticking open. In either instance (provided they are true), the oil pump should be cleaned or replaced - something that is a formidable job as removal of the oil pan involves either pulling the engine or dropping out the subframe and related components. Do not use engine oil flush treatments - they tend to overload the oil filter and cause the oil pump pressure relief valve to open and could lead to serious engine damage.

These are the usual things I would check first before condemning the engine. Loss of power, rough running and metallic knocking/thumping sounds would point towards an engine rebuild, especially if they are all present at the same time. But if the engine is running well and quietly, the turbo spools and is also quiet, then start with the aforementioned electrical tests of the oil pressure sensor switch and go from there.

Mar 16, 2013 | 1987 Volvo 740

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I suspect they should have actually measured the oil pressure instead of assuming a bad oil pump. The pumps are far more reliable than the crappy pressure sensors which are much cheaper and easier to replace. These are frequent failures and produce the random lighting of the warning light.

Jun 23, 2011 | GMC Yukon XL Cars & Trucks

1 Answer

My 2002 grand cherekee check gauge lights keeps coming on and the oil gauge would drop when I slow down or is at a stop. Please advise

This could be a faulty oil pump. or more commonly a bad oil pressure sensor you can call. If its the pump i recomend you have it fixed as soon as possible. The check gauges lights up because the oil pressure isnt as much as required. But common problem is the sensor replace the sensor and the engine oil along with a filter hope this solves your problem.

Oct 05, 2010 | 2002 Jeep Grand Cherokee

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2001 old aurora oil psi light flashing

This Indicates POOR OIL PRESSURE and PROBABLE OIL PUMP FAILURE, DO NOT DRIVE Before Correcting FIRST Have the Pressure Checked MANUALY IF OK SENSOR is BAD IF PRESSURE is NOT OK OIL PUMP has FAILED and Requires Replacment.

Jun 04, 2010 | 2001 Oldsmobile Aurora

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On my 2002 Audi A4 the Engine Oil Sensor faulty light has come on. Does this need to be replaced Immediately? The car is running normally. Can I change the sensor on my own?

Might want to keep an eye on this one.

AUDI has recalled A4 models d/t excessive "oil sludge buildup" (leading to possible engine failure, timing belt failure, and an overall decrease in daily performance). You will note that AUDI has switched from mineral based oil, to synthetic oil for routine oil changes. The aforementioned will allow the engine oil viscocity to remain constant between service point intervals.

Jan 04, 2010 | Audi A4 Cars & Trucks

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Oil pressure light comes on.message says stop engine now.what are possible solutions.engine has 151,000 miles.i change oil every 3000 to 4000 miles

HI.There are only two possible issue here that will cause this to occur. The first issue will be a failing, or damaged oil pressure switch(sending unit). The sending unit is responsible for transmitting the correct information to the instrument that displays the pressure readings. If there is a wiring issue, or the sending unit has failed, this will cause the oil light to illuminate. In this case, the sending unit must be replaced. Ok, the next issue will be a failed oil pump. This will be the most common issue, in this case, due to the actual mileage on this particular vehicle. A oil pump can fail mechanically(gear failure). This device is not repairable, and must be replaced. The easiest way to isolate the issue, will be to preform a pressure test on the engine. There is a special tool, used by your mechanic, that will allow you, or him, to extract the true pressure readings for the engine, during idle. If the pressure test confirms that the oil pressure is low, or weak, this will lead to a failed oil pump. Now, if the pressure test indicates that the engine is running at optimal pressure range, this will indicate that the oil pressure switch(sending unit), is faulty. It must be replaced.

Dec 07, 2009 | 2003 Volkswagen Passat

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