Question about BMW 318

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I have a 318CI when engine normal operating temp .red oil light flickers at tickover. oil sensor checked also engine flushed and castrol oil filled still got problem

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I don't know how you checked oil sensor, but it sounds like it's bad if engine is not ticking. There's 2 "oil sensors" on car - 1 is level which is on oil pan and other is pressure sensor on motor. Refer to RealOem.com (enter your car specs) and you'll find exploded views of engine components. Also refer to BavAuto.com or Pelican Parts.com for tips & tech info.

Posted on Apr 03, 2011

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Posted on Jan 02, 2017

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2002 dodge intrepid gets to operating temp oil light comes on tep gets high runs rough and dies no ticks runs smooth until it reaches operating temp


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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.

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Engine Overheating and fluctuating temp gauge??!!!


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Mar 03, 2017 | 1999 Pontiac Grand Prix

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At 28,066 dealer oil change. At 28,778 dealer flushed engine to remove sludge build up and changed oil. At 30,835 miles inspection, dealer flushed engine to clean out sludge and changed oil. At 34,630...


First dealer was NOT doing you any justice. Next oil change run a can of GUNK engine flush let idle 5-10 mins then change Oil & Filter and use a good oil like Castrol or Valvoline 10w-30. You won't have "supposed" sludge build up.

Mar 02, 2011 | 2000 Chrysler Town & Country

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Hi i have problem with oil light flashing after 20 30 min when i am driving.It is only when i stop on trafic or car park -engine stiil runing.Then when i press gas pedal lights is off.checked oil level and...


You can fiddle with thiis and check oil pressures but best is sump off, thorough clean, teardown the pump thoroughly clean it and pickup and replace it if any wear or the pressure releif spring is weak.You have given no mileage and no information on the oil used nor whether in a really hot area or 'where'?..there are several considerations ranging even into worn bearings...Of course with acceleration motor speed increases oil pressure...that's why light goes out (unlikely but possible the sender unit is faulty...but try replacement of that first if you want...) It doesn't take a lot of pump wear to cavitiate and drop oil pressures.

Jan 27, 2011 | 2003 BMW Z4

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Likely you set that code by removing the sensor...you can usually clear it by disconnecting the battery or if you keep driving it I believe eventually it will go out when the computer cycles through and finds it is now OK.

Jun 25, 2009 | 1999 Buick LeSabre

1 Answer

Flickering oil light


This could be two unassociated problems; the flickering oil light can indicate that the pressure sensor for the idiot light is failing- this is not uncommon, the other can be a failed temperature sensor sensor on the main radiator. 
The low oil pressure condition may also be indicative of a worn engine part or parts. It would make sense to have the actual oil pressure checked in a shop to see if it is in the normal range which should lay between ~30 & 60 pounds depending on engine RPMs and engine temperature. The idiot lights trigger at around 4-5 pounds and this is really pretty late for a warning; if the pressure is actually that low, not only lubrication is too little but the cooling effect of the circulating oil is inadequate.
If it was my car, I would replace both sensors before getting too worried. The cost of these together (parts only) should be well under $50 US.  

May 25, 2009 | 1999 Ford Taurus

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Jiffy lupe said i need engine flush for my 2002 Jeep Liberty


No, this is not normal. if you have coolant or water leaking into the engine piston chambers, you will need a head gasket not an engine flush. if you open the oil cap to add oil to the engine and you see a lot of gunk under the cap, then its time for that flush. I would be concern about the more serious issue and that is that there is coolant or water leaking into the combustion chambers. this is a sign of a bad head gasket.

please rate and god bless..

Mar 26, 2009 | 2002 Jeep Liberty

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