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vwnewton, VW Owner,ASE Master and L1 Advanced
Category: VW
Satisfied Customers: 307
Experience:  25 years of VW obsession turned into a job, last 15 years as a VW Tech.
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2010 Passat 2.0, 87k well maintained I have low oil

Customer Question

2010 Passat 2.0, 87k well maintained I have low oil pressure, developed & worsening over last 8 weeks. installed gauge to monitor. 30psi warm at 1800, drops to near zero at idle. Yesterday installed new oil pump and intake, no difference in pressure. Engine is quiet, no rattling like you would hear with insufficient oil. I'm baffled!
JA: Where exactly do you think the noise is coming from? And how long has this been going on?
Customer: there is no noise, its low oil pressure
JA: Are you fixing your Passat yourself? What have you tried so far?
Customer: as I stated, I replaced oil pump and pickup yesterday, no change in oil pressure
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 2 months ago.
Category: VW
Expert:  Gunvir Singh replied 2 months ago.

Hello, did you find any metal shavings when you drained the oil?

Customer: replied 2 months ago.
No shavings at all, no crud buildup in pan at all, intake screen was clean
Expert:  Gunvir Singh replied 2 months ago.

Did you check the pickup tube was not clogged up?

Customer: replied 2 months ago.
Pickup screen was clean, tube not clogged. Obviously the new pump and pickup tube are working properly. Still poor pressure. No reason bearings would noticeably wear over 8 weeks time. Could something internal be leaking possibly?
Expert:  Gunvir Singh replied 2 months ago.

I dont think internal leak is the case. It could be a faulty timing chain tensioner too. did you check that ?

Customer: replied 2 months ago.
I did not check timing chain tensioner
Expert:  Gunvir Singh replied 2 months ago.

Do you hear any slack or chatter form the timing chain area?

Customer: replied 2 months ago.
I do not hear anything unusual
Expert:  Gunvir Singh replied 2 months ago.

Other than the fuel pressure guage what other symptoms are you having of low fuel pressure?

Customer: replied 2 months ago.
Oil pressure, not fuel pressure.
No other symptoms at all
Expert:  Gunvir Singh replied 2 months ago.

I'm sorry. I meant oil pressure. Are you sure your guage is accurate?

Customer: replied 2 months ago.
I can buy another gauge. But I feel it's accurate. I was getting the warning light & tone. I first replaced pressure sensor, no change, added electronic digital gauge & sending unit, gauge reading drops low at the same times I was getting warning light. That's why I then replaced pump and pickup tube. Perhaps I should get a traditional gauge to try.
Expert:  Gunvir Singh replied 2 months ago.

It is worth a try. Since it is not showing any traditional symptoms of a low oil pressure issue.

Customer: replied 2 months ago.
Alright I'll try to source one today & install it when I get home
Expert:  Gunvir Singh replied 2 months ago.

Ok. And if pressure is same than proceed with the timing chain tensioner check.

Customer: replied 2 months ago.
Pressure issue is the same with mechanical gauge. Do you suggest I "check" timing chain tensioner?
To my knowledge the only way to check that is to install a new one. Is this correct?
Expert:  Gunvir Singh replied 2 months ago.

Yes.

Customer: replied 2 months ago.
Alright, I will source parts and install new tensioner. From the looks of it likely 8 to 10 hour job
Expert:  Gunvir Singh replied 2 months ago.

It calls for around 6 hrs by the book.

Customer: replied 2 months ago.
Parts are to arrive here by Friday UPS, I will be doing the work on either Saturday or Sunday as my schedule permits. I'm anxious to get this issue resolved
Expert:  Gunvir Singh replied 2 months ago.

Ok, keep me posted.

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