Oil pressure light on at idle for Volvo S40 MY2005 B5244S4 Engine
Just had fresh oil/filter in after oil leak between the crankshaft casings was repaired. Engine had to be to be removed for this.Had no issues going in to dealer other than leak.The "check oil light"(alladdin lamp)now comes on at idle. Little later the MIL.When you rev it >idle its fine. Oil used is Mobil 1 5W/50. New Oil pressure switch installed and ECM update(due to potential low revs casuing light to come on) for MY2005 chassis number did not fix it. Cleaned Pressure switch connectors with contact cleaner, cleaned ETM,replaced oil,resets didnt solve this. Only thing left is check the one way valve at the oil filter area and filter if clogged. Any advise appreciated...other wise the engine probably has to come down again for inspection. Pls help!
An expert who has achieved level 3 by getting 1000 points
An expert that got 20 achievements.
An expert that got 10 achievements.
An expert that got 5 achievements.
Re: oil pressure light on at idle for Volvo S40 MY2005...
Since you are going to check the one way valve and cleaning the filter too, I would recommend to check the intake air filter and clean it throughly. After that use carb cleaner to free up the nozzles of the injector valve . If the engine sound better after using carb cleaner, add some into the fuel from the fuel filter or pump, whichever one has easy access, and gun your engine in short bursts, after which it should run better.........sodeep
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
code efi-232 is long term fuel trim, idling. intake/exhaust leak, fuel pressure, excessive fuel in engine oil, engine oil level to high. injectors. EVAP canister purge valve, wiring MAF sensor, ECT sensor HO2S. hope this helps and let me know if you need any more info
Hi Paul: There are two things to check, if the PCV valve was bad or if the filter was clogged it could cause and oil leak. The most likely possibility would be the rear crankshaft seal. These commonly leak on these vehicles. Volvo has an updated seal available for this engine since it has been a problem.
Hope this helps; also keep in mind that your feedback is important and I'll appreciate
your time and consideration if you leave some testimonial comment about
have you tried to run finger around inside of tail pipe to see if its burning oil!! but do this when it is cold. you may also have bad oil rings on pistons. if it is burning oil it will smoke very little if any. because the convertor runs so hot it will burn up all the oil residue. so you may noy be able to see any smoke. have a good day!! check carefully all gaskets for oil leaks, and also make sure oil filter is hand tight, sometimes a loose oil filter will start leaking oil.
This will indicate that there may be some sludge build up in the block, or the oil pressure switch is damaged. The more serious issue will be a failing oil pump. To isolate the issue, simply, have a oil pressure test ran on this engine. If the test indicates that the true oil pressure is optimal at idle, kindly replace the oil pressure switch. Now, if the test proves that the pressure is indeed lower than factory specifications, this will confirm that the pump is damaged. Have the pump, and oil pump screen replaced, in this case.
NOTE_ I would, also, recommend to have the engine flushed asap.
The oil filter housing also houses the pcv system. What causes the noise is that there is a check valve in the pcv system that is supposed to regulate the pressure in the crankcase. The valve gets stuck and causes vacuum to build in the crankcase, which in turn sucks air wherever it can causing the noise, which is also why when you pull the dipstick it stops. This can also cause a check engine light with codes for fuel trim. The oil filter housing will need to be replaced. Good news is that Volvo extended the warranty on these to 100K miles so it should be free of charge at the dealer. One thing to watch for is oil leaks after the replacement from the camshaft seals. If air can get past a seal, usually oil can too. If the seals leak too long it can contaminate the timing belt and cause it to break, which causes a lot of damage.
i really hate to say but im betting that internally there is components wore over tolerance. most popular is cam bearings wore and leaking by. in most cases lack of oil changes or frequent short trips cause sludge to build up in engine and cause oil passesges to become restricted and the cam being high in the engine, this sees the most slime build up and starves the most for oil... as engine warms,oil thins, and the problem becomes urgent. i hope this helps but sure sounds like you need some internal re working done