2.0 Tfsi Oil Pressure Problem

G3MZY

G3MZY

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

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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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arch-stanton said:
https://www.audi-sport.net/xf/threads/2-0-tfsi-pick-up-pipe-clarification.227639/

This is a common issue with the TFSI- get an oil pressure test done on the car asap.
Click to expand...

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.
 
you say that it had a flush, I assume you are referring to a cleaning product not just oil.
 
Yes it was the Forté Engine flush that is ran through on tickover before changing the oil.

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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
 
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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.
 
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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fonz600 said:
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.
Click to expand...
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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G3MZY said:
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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Click to expand...

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.
 
I had the same issue when i brought my car at 135k miles as a spares n repair. rear timing chain was not time correctly so after sorting that out i had the red low oil pressure light. job can be done on the driveway and the revised pickup pipe that audi sells will prevent that issue
 
I have just had this problem arise on mine. my car has done just under 158.000 miles the only flush ive done is one in with the fuel in December but this problem only accured last week as soon as the low oil pressure warning came on I haven't driven it. hoping to get it in work next week. I guess its a big job to get the sump off of a quattro?
 
A bit off topic but whats the longlife all about? My local audi specialist does these longlife services whats the deal with them? Is it a cheap service or something?
 
Just Rob. said:
Don't even think about it Ricky.
Click to expand...
Oh im definitely not Rob i always buy the oil and everything else for that matter that goes in or on my cars I'm just curious to know what it is as I've never bothered to look into it but i have only ever heard bad things about it (whatever it is lol)
 
Long life is an extended service schedule, but I believe the idea is to stretch the servicing out enough the car lasts 100k/10 years then that’s it.

they can be two year plus intervals and over 20k apart, from Audi’s point of view, if it gets past the 100k/10 year mark it’s not really their problem.

In my opinion and many others, oil is well spent by this time, causing more harm than good, it could be a very good contributor for the oil pump sludge issues too.
 
Exactly, and in the tfsi's , oil goes tits up very quickly.
 
Bbflex said:
Long life is an extended service schedule, but I believe the idea is to stretch the servicing out enough the car lasts 100k/10 years then that’s it.

they can be two year plus intervals and over 20k apart, from Audi’s point of view, if it gets past the 100k/10 year mark it’s not really their problem.

In my opinion and many others, oil is well spent by this time, causing more harm than good, it could be a very good contributor for the oil pump sludge issues too.
Click to expand...
Ahh i see well thanks for letting me know :) not that i was ever going to do it but its nice to know what it is as i see it plastered everywhere
 
has anyone had to have the pump done in one of these yet as my oil pickup is quite clean? its got the bjb code on the engine
 
G3MZY said:
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 ).

Sent from my SM-G955F using Tapatalk
Click to expand...
Do you still got the car?
 
Yes I have its sat in the the workshop were I work as a valeteer
 
Dieseldave331 said:
Yes I have its sat in the the workshop were I work as a valeteer
Click to expand...
I had same issues with my b7 quattro se BUL engine exactly same symptoms on my engine with oil pressure. I had a oil flush before I change the oil. And after about 500 miles driven the oil pressure comes up on my dash. No rattling engine or so else . But this happened last year on summer. After that day I left the car in my driveway for about a week. So I can investigate the problem. I start the car, after some answers found in here and prob it was the oil pickup pipe...stuck with some oil from the bottom of the oil sump when used that thing to flush before . Since then no light come back from oil pressure. Didn't change anything. Still drive the car on this time.
 
We had the sump off and the pickup wasn't blocked but cleaned it all out and put back together hopefully it should have solved the problem but will find out tomorrow
 
After you have change the oil filter, how many miles have you drive the car? Oil pressure light come back?
 
Not driven it since the light came on I just parked it up till I could get it in the workshop to check it will find out tomorrow if it solved the problem
 
Not driven it since the light came on I just parked it up till I could get it in the workshop to check it will find out tomorrow if it solved the problem . It has been nearly 4000 miles since I serviced it
 
Not driven it since the light came on I just parked it up till I could get it in the workshop to check it will find out tomorrow if it solved the problem . It has been nearly 4000 miles since I serviced it
 
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Well the light hasn't come back on and I've driven it 30 to 40 miles upto now so might be sorted
 
We cleaned out the sump and the oil pickup changed the oil pressure switch fitted a new oil filter and put fresh oil in and that was it
 
audi upgrades
The oil pressure sensor is on the the right of the oil cooler against the block there was only a little bit of carbon build up in the sump
 
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