Question about 2005 Volkswagen Golf
We had a serivce on this car at 50k on wednesday and on friday evening oil pressure warning appeared and the car would not start. Towed to dealer/service centre. They state this is a fuel problem (poor quality). Man what about Australia's great fuel standards!. Experts: does this symptom and treatment make sense? The car is still with the service centre and hoping they fix it $$$$. Oh wife says the dip stuck friday indicated oil...hmmm
I think fuel has nothing to do with oil , check the oil and filter quality for your engine
Posted on Jul 07, 2017
SOURCE: Oil Light comes on VW passat
Start checking the oil level, if oil is low then the problem is a leak or weared rings.
If oil level is ok, check that the oil pump has enough pressure.
If oil pump is also fine, then scan the ECU (car computer) and replace the sensor if you do not find anything else being wrong.
Posted on Feb 18, 2009
Sounds like and electrical problem in the oil pressure sensor circuit. I wouldn't rebuild the engine just yet. Hook up a mechanical oil pressure gauge and drive the vehicle with the gauge on it so you know exactly what the oil pressure is.
Posted on Feb 27, 2009
I would check the oil pressure sensor and the oil pump itself. You can take the sensor out and use a mechanical gauge to check the oil pressure. If the oil pressure is within specs, you need a new sensor, if not, you need a new pump.
Posted on Apr 13, 2009
SOURCE: My car is Volkswagen polo
Do not assume that the low oil pressure warning is a false one or that you only have a faulty oil pressure sensor. Your engine may in fact be running with low oil pressure once the oil heats up and thins out. 8-10 miles of running is enough to get the oil hot. It is significant that you only get the low oil pressure warning once the engine oil is warmed up.
If the oil pressure in the engine is low, engine lubrication will be impaired and the engine can be badly damaged so you need to run an engine oil pressure check.
1. How long has it been since you have changed the oil in the engine? If it has not been changed in the past 6 months then change it and change the oil filter at the same time. You must only use the oil specified by VW for that particular engine.
2. When new oil is heated it thins. If it is old and contaminated it will be even thinner when warm. You will get less oil pressure when the oil is thin and hot and more oil pressure when it is thick and cold. Fresh new oil is a little thicker as it has not been diluted with petrol and other contaminants.
Oil pressure also varies with engine speed (RPM). At idle or low engine RPM the oil pressure is lower.
3. OIL PRESSURE CHECK
After the oil is changed the car needs to be run to check if the oil pressure warning still appears. (I suspect that it probably will). If it does appear then an independent oil pressure gauge needs to be connected up to the lubrication system in the car to check the engine oil pressure. This is best done when the engine oil is hot because this is when you are getting the low pressure warning. Any competent mechanic will be able to do this. ( The useless ones will not). The oil pressure can then be properly checked on the gauge at various engine RPM. If there is a low oil pressure reading from the gauge then there could be a problem with the oil pump, the oil pick up or the oil pressure relief valve in the engine.
4. You mentioned that you see the oil pressure warning disappears once you accelerate. I suggest this is only occurring because with an increase in engine speed (higher RPM) the oil pump speed is increasing and the low oil pressure problem is being overcome temporarily. However as soon as the engine RPM drops the oil warning will appear again which means the engine is running with below minimum oil pressure at that RPM.
Even when you get no warning, the oil pressure in the engine could still be running significantly below the optimum level.
5. It is possible that the oil pressure is fine and that the problem is an electrical gremlin as these cars suffer from a variety of electrical faults. However from what you have described I think there is a problem with low oil pressure in the engine and until it is properly checked it is unwise to assume that you are just getting false oil pressure warnings.
I hope this helps.
Posted on Dec 13, 2010
Tips for a great answer:
Dec 10, 2016 | Volkswagen Jetta Cars & Trucks
Nov 01, 2015 | Audi Cars & Trucks
May 30, 2014 | 2002 GMC Envoy
Jun 26, 2012 | 2001 Volkswagen Jetta TDI
Apr 17, 2011 | Audi A6 Cars & Trucks
Apr 15, 2011 | 2006 Volkswagen Passat
Apr 12, 2010 | 2006 Volkswagen Passat
Dec 30, 2009 | 2001 Volkswagen Jetta TDI
Sep 26, 2009 | 2007 Volkswagen Passat Sedan
75 people viewed this question
Usually answered in minutes!