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2.0 Tfsi Oil Pressure Problem

G3MZY May 2, 2018

  1. G3MZY

    G3MZY New Member

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    Hoping someone has come across this before and can point me in the right direction, I'll try and keep it short but bare with me....

    I have the 2.0 Tfsi 220bhp BUL (114,000 miles) engine and have an intermittent error reference the oil Pressure.

    I was driving the other night and it came up on the dash in red 'Low Oil Pressure' I stopped near immediately, turned it off checked the oil level and for leaks etc but everything is fine. Started the car again no problems, no light and drove off, less than a mile later it pops up again. Stop again for half hour this time with the key on the dash hoping to get it home (30 minutes away). I drove her home staying less than 2000rpm with the light popping up every 10 minutes or so, each time I would switch her off and start her up again near immediately while still moving as this seemed to sort the problem temporarily for 10 minutes or so on average. I took her to the garage today, they changed the oil Pressure sensor and checked the oil Pressure which is within the correct tolorences. I drove it away but sure enough the light came back on 3 times within 1/2 a mile of each other, this time I Code read it using my Launch CRP129 but no codes found.

    The car had an oil change around 9 months ago using Forte Flush, OE Oil Filter, Castrol Engine Oil and Forte Top End Treatment, the car is used daily round town on short trips, dual carriageways weekly and in the last week covered over 600 miles on distance runs so due to the quality of products I use and the work it does I can't see that there is a pick up/strainer issue. Also it does not rattle badly so Oil is reaching the top of the engine etc.

    Has anyone come across this before where the light is intermittent? Any suggestions would be appreciated. Does anyone know of the location for the Oil Pressure Valve/Regulator?

    Thanks in advance.
    Gem
     
  2. Sibmets

    Sibmets New Member

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    Did the garage checked wire harness leading to oil pressure sensor? Could be a short somewhere.

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  3. Gazwould

    Gazwould Well-Known Member

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  4. G3MZY

    G3MZY New Member

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    Sibmets - As far as I am aware they didn't, no. I have already thought about this one but it's so hard to test when its intermittent..... I have read two or three threads on oil filter problems and pcv valve issues. I am going to purchase these tomorrow if I can and see what happens as they look promising.

    Gazwould... Thank you for your unhelpful and slightly insulting comment. I would not have driven it if I thought I was doing major damage and having been in the motor trade 15yrs so I have some clue as to what is what. Unfortunately I do not have AA or RAC type cover and I would love to carry on right now with reasons but I won't. Anyway, thanks for the oil pump link but I don't buy my parts off the net. Secondly that is one of the most expensive parts to replace, I am looking at the simple cheaper options first to rule them out. I am asking for previous experiences of the problem I described and am struggling to find one close aside from one thread on the PCV valve.
     

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  5. arch-stanton

    arch-stanton Member Team Brill Red TFSI Owners Group Audi Avant Owner Group S-line owners group

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    G3MZY likes this.
  6. G3MZY

    G3MZY New Member

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    I had an oil pressure test done before anything and it was within tolerences, I do have this in mind to be a possible fault still though but I have my doubts to this being the problem given she is fine from cold and well maintained, am having to also weigh up the repair cost vs the value of the car if I get to that stage.
     
  7. Just Rob.

    Just Rob. Moderator Staff Member Moderator Team Brilliant Black Team Daytona TFSI Owners Group Team V8 VCDS Map User Gold Supporter Audi RS4 Audi A4 Audi Avant Owner Group quattro S-line owners group Manual

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    you say that it had a flush, I assume you are referring to a cleaning product not just oil.
     
  8. G3MZY

    G3MZY New Member

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    Yes it was the Forté Engine flush that is ran through on tickover before changing the oil.

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  9. Just Rob.

    Just Rob. Moderator Staff Member Moderator Team Brilliant Black Team Daytona TFSI Owners Group Team V8 VCDS Map User Gold Supporter Audi RS4 Audi A4 Audi Avant Owner Group quattro S-line owners group Manual

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    There have been numerous cases on this forum and others regarding the use of such products, and, the way it can effect these engines.
    I know of 4 from memory that suffered the same problem and then a more serious engine failure, the cause was clearly laid at the flush product, and more so on cars over 100k miles.
    The cars were also well maintained, but a flush product was used and the subsequent problems from that use due to larger sludge particles and other contaminates clogged the oil suction mesh and other oil galaries leading oil starvation and reduced oil pressure , some cars then suffered terminal engine failure , others needed major repairs.
    You should not discount blockages or restricted oilways really , also the cam chain tensioner is very prone to the effect of the clogging as its hydraulic and will more than likely be worn on you engine , its one of a handful of engine issues that plague these engines and are all connected by poor design.
    If you car has been serviced on the long life schedule for any period of time it will be more likely to have oil related problems than cars on something like a 10-12k schedule, long life kills these engines
     
    Last edited: May 4, 2018
    LawrenceH, G3MZY and Gazwould like this.
  10. fonz600

    fonz600 Member

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    I was about use an engine flush before I read this.
    I’m having an issue with camshaft a over advanced and read it could be an oil pressure issue so since the pick up hadn’t been changed I’d do it now and see if it helps. I did plan to put in an engine flush before dropping the sump.
    Is this best avoided then as was gonna change the pick up straight after.
     
  11. G3MZY

    G3MZY New Member

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    I changed the PCV valve and oil filter last week and have covered about 40 miles since with no issues at all, I think it was a filter fault but the valve wasn't in great shape either to be fair. I am saving up to get the clutch and flywheel done, I will be asking the garage to change the crank chain and pick up while the subframe is off to be sure (if I keep the car that is, have lost a bit of trust in it ).

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  12. G3MZY

    G3MZY New Member

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    Hi, Have you tried changing the timing solinoid? Sure you're already aware but if you do have to drop the sump the subframe needs to be lowered to get to the two bolts hidden at the rear of the engine.

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  13. fonz600

    fonz600 Member

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    Unfortunately yeah I know I have to drop the sub frame. The pick up has never been replaced and almost at 100k mileage so probably needing done so best do it before it costs me in the long run.
     

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