URGENT oil pressure stop engine

[Dan_FR]

Fuel trims should be as close to 0 as possible, but will vary depending on software and intake. An air / vacuum leak could account for surging at idle. Don't clear fault  codes as this resets the trims and itll take a few miles at least to re-adapt

[doylebros]

The surging can be really apparent from inside the car but impossible to record. I oculd hear it quite loudly yesterday in the car after giving it some beans. Ive listened to the video again and you really need to turn up the volume to hear it. @doylebros maybe give it another go? Remember its the last five seconds that you can properley hear it @Dan_FR do you know what normal fuel trim shouls be? Or is a case of requested and actual and ill be able to see myself.

Its the last issue on this whole topic, and ideally I really want to sort it haha. It might turn out thats its normal but I doubt it. Thanks.

I can hear the tone change in the last five seconds did it stay at the uplifted tempo or drop back?
MY NEXT MOVE
I would do the two bolts on the PCV first as we know that problem exists.
Remove the air box and check for any tiny cracks with a magnifying glass - they crack very easily when removing.
I've had a relatively new PCV act up once I've left it upside but that was a hunting fault.

[r5gtt]

The noise seems to get louder but I'm guessing nothing major to worry about considering it's running and no warning lights are illuminated.

[Pesky jones]

Ok. It is quite audible in the cabin. Doesnt do it all the time but after giving it beans It will definitely do it. It comes and goes, mainly at the same tempo but sometimes just the odd surge every now and again.

I will check fuel trims tonight, and sort out the pcv and check the airbox for cracks as you say @doylebros  Am I checking the whole air box cover? Or just the part that contains the filter?

Thanks.

[doylebros]

Whole cover 

[Pesky jones]

So. I checked the cover and found a few small cracks. However, more importantly I think, I unplugged the maf and the surging had conpletely stopped and it run normal! Sounds lovely. Thinking about an intake anyway so might just live with it till then now I know its not serious.

[doylebros]

If you feel the maf is gone Send Freddy a PM and buy his maf http://www.mk5golfgti.co.uk/forum/index.php/topic,106431.0.html

Bargain and you'll know it's the best way while your waiting for an intake.

[fab5freddy]

If you feel the maf is gone Send Freddy a PM and buy his maf http://www.mk5golfgti.co.uk/forum/index.php/topic,106431.0.html

Bargain and you'll know it's the best way while your waiting for an intake.

Cheers John, i think you need your glasses though mate, mines a MAP sensor not a MAF 

[doylebros]

That is the problem Freddy, my eyes are shot, you should see the size of the lights I'm using to work with, sorry gentlemen I'm be more careful in the future.

[Pesky jones]

Cheers. I might borrow my mates maf sensor off his is leon fr bwa and see if it solves it.

[doylebros]

Now that's a good move but if it doesn't look at fixing those cracks you've found in the intake.

[Dan_FR]

If it improves when you remove the MAF sensor then i suspect a vacuum/air leak post sensor. Post up the fuel trims. Block 032 for long term, but also look at the real time idle trims which are shown in a nearby block once the car is up to temp

Rare for a MAF to go on these

[Pesky jones]

Lambda idle -1.5
Lambda partial 1.6

@Dan_FR

[Dan_FR]

Very much doubt MAF sensor. Leak would have to be small but its entirely possible

Keep am eye on the realtime trims as the LTFT take a while to adapt

[doylebros]

I still would do the simple things first pesky - PCV screws replace and dremel the intake cracks and fill with quality adhesive as well as Dans guidance on the reading to be monitored.