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Audi TT Oil and Fuel Questions

28 messages,  Last post on Feb 27, 2013 at 9:39 PM

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What is this discussion about? Audi TT, Coupe, Convertible

Messages Page 3 of 3

#19 of 28 Oil pressure light coming on...among other things by dianebou

Jun 18, 2007 (1:28 pm)

I am new Audi owner of a pre-owned 2001 TT Quattro (sedan). It's a manual 5-speed. I am experiencing several problems, the first (and most alarming) of which my mechanic has no solution for.
 
--The oil pressure warning light comes on intermittently, just about every time I drive the car. It seems to happen in a couple of different circumstances: a) When I am coming off the highway after being in 5th, and must come to a stop at the end of the ramp. Then, it will go off again when I move forward, but will come on again relentlessly every time I must come to a stop; b) when I encounter a lot of stop-and-go traffic and continually accelerate/decelerate.
 
In the 2nd instance, recently, I was driving in the city, in extremely heavy traffic, and the oil pressure light went on and off continuously. Not only that, but the engine started to overheat.
 
I have checked the oil, and the level seems fine. Also, I am using the highest quality synthetic oil available (according to my mechanic...I couldn't tell you what kind specifically).
 
Is this an oil pressure problem? How serious is it? (i.e., how expensive?) Thanks so much for your help!

#20 of 28 Re: Oil pressure light coming on...among other things [dianebou] by Mr_Shiftright HOST

Jun 18, 2007 (1:48 pm)

Replying to: dianebou (Jun 18, 2007 1:28 pm)
Well you might have to install (temporarily) an analog oil gauge (one with numbers) to read what's going on, to make sure it's not just a loose wire grounding out. If the gauge drops every time you maneuver, then that is a bit troubling. Possibly you have some kind of blockage or malfunction to the oil pump pickup screen, or a broken baffle in the oil pan (that should keep the oil from sloshing around in there).
 
So I'd check for a loose wire or bad sensor first off, then screw in an analog gauge for testing.

#21 of 28 today my car make a rare noise by joepablo

May 03, 2008 (9:00 am)

when i look a the engine the sound was life the valves, it never did that sound. it could be the oil i used? need help!!!

#22 of 28 Re: today my car make a rare noise [joepablo] by Mr_Shiftright HOST

May 03, 2008 (9:51 am)

Replying to: joepablo (May 03, 2008 9:00 am)
One thing about Audi engines, you MUST use the OEM oil filters or exact equivalent to assure that you don't get funny lifter noises. Apparently, some off-brand oil filters aerate the oil, and the lifters tend to collapse.
 
Before digging into the engine by all means go buy an AUDI filter and the oil weight recommended in your owner's manual and see if this corrects your problem.

#23 of 28 im using fram and its doing fine by savannah_tt

May 28, 2008 (4:25 pm)

my 2001 uses no oil and it has 74K. (225hp) i guess im lucky. the fram filter is working fine with no oil light probs.fyi there is like 3 fram filters that fit the car. one is for the VW's one for audi and one is just huge that some use for higher oil capacity.

#24 of 28 Re: im using fram and its doing fine [savannah_tt] by Mr_Shiftright HOST

May 29, 2008 (9:34 am)

Replying to: savannah_tt (May 28, 2008 4:25 pm)
I think the V-6 is more susceptible to non-factory oil filters, from the reading I've been doing on the subject.
 
If the non factory oil filter is causing problem, you'd know it. The car would either run badly or not at all. It might not even start. One has to see a non-start Audi cured simply by replacing an oil filter to believe such a thing is possible, but I lost a bet with a mechanic on that very incident.
 

#25 of 28 Re: Oil pressure light coming on...among other things [dianebou] by windstarpro

Dec 24, 2009 (8:11 pm)

Replying to: dianebou (Jun 18, 2007 1:28 pm)
I can tell you what it ISN'T. Im working on a 2000 Audi TT Quattro 1.8T. Not my speed, but it is a cool car, and the customer loves it.
 
-I put a oil pump in it. I dissassembled the old one, didn't find ANY wear on it. In great shape.
-While I was at it I put a pick up in it too. When I took the old one out, I found nothing blocking it, and the o-ring on the pump side was in good shape. One thing to note:the Passat pick up and the TT pick up ARE NOT the same. The TT is longer length wise placing it more toward the center of the oil pan.
-I put a switch in it. When I tested the vehicle with fresh Amsoil and the large one quart filter, it took about a hour and pressure went down to about 23 pounds as read on a gauge I installed on a tee with the switch. I had a test light hooked to the switch. This is when I noticed the switch had opened. Now, VAG calls for the switch to open at about 1.2 Bar, or 18.503 pounds. So, its off 4 or 5 psi.
On the whole oil thing, I am using VAG approved oil and filter. The lowest press I saw at idle after 1.5 hour running at idle was 21-22 psi which is still good. VAG calls for a minimum of 1.3 Bar or 18.85 psi at idle and warm. Close but good. However at 2000 rpm hot, it only managed 48 psi. Not enough according to VAG, should be 50.76 psi. Engine sounds fine most times no knocking or anything. Engine may be worn out, but only time I have ever seen pressure drop off, is when there was a knock... Im waiting on the right length pick up. I'll let you know if what I have done solves anything.
Oh, no sludge in pan, or anywhere.

#26 of 28 fuel problem by kie33

Jan 16, 2010 (1:09 pm)

i have an 02 reg audi tt. when i put my foot down the turbo dosnt kick in the car just judders, and its using far to much petrol. ive replaced 2 of the coils. any ideas.

#27 of 28 Re: fuel problem [kie33] by ramonc

Dec 16, 2010 (2:06 pm)

Replying to: kie33 (Jan 16, 2010 1:09 pm)
I hope you found the solution but I would suspect your problem was the air sensor unit. It is one of those questionable Audi quality parts that fail early but slowly. It screws up the fuel mixture and causes hard starts as well. Mine failed at 20,000 miles but I had to go to a non Audi technician as Audi was not able to locate the problem. Yet another issue with Audi.

#28 of 28 Audi tt stopped after 10 min running and than started againg after 20 min. by jjean1

Feb 27, 2013 (9:39 pm)

Hi guys, I'd really appreciate if one of you could help me with a problem.
I own an convertible 1.8 Audi TT 2001 5 speed. something very strange is happening and i can't fins a solution.
Around 3 month ago i was driving my car for around 10 miles than i parked at a local Walgreens. 10 minutes later when i left the store i couldn't turn on the car. it was like it had no gas. the ignition was working but the car won't start. i made a phone call and about 10 minutes later i turn the key again and it worked, like never happened. i found it very strange but the car was working fine.
same thing happened three or four times again in a period of 3 months, but this saturday when i was driving to a local mall (8 miles from my house), i was stopped, waiting for the green light in front of the mall, the car died. same thing, turn on the key, it looked like was no gas. i was stopped in the middle of the street, i lived alone and after 20 min the car started again.
i was driving back home and happened again in front of my house, after the same 20 minutes the car started again.
i have no idea what it could be. i took it to the mechanic, he ran the scan and nothing show up.
it is an old car, Audi want to charge me $250/hr just to look at it, with no guarantees.
i believe that might be a sensor related to fuel or something. have one of you guys heard something like that before?
Please a word of advise.
Thanks

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