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Discussion Starter · #1 ·
So just purchased a used 1.8t TT. It's was a little rough around the edges with 125,000. £800. Drove home and the red oil light came on, i pulled over and checked oil, seemed fine. Silly me i carried on home for another 35 mins and parked her up, few days later i booked her in for a full service and MOT at an Ipswich Audi specialist garage. Drove her there no light.
Picked her up 4 days later with a clean bill of health, new rear springs and some other bits.

Anyway after a week of driving back and fourth to work, 25 mins each way yesterday the light came back on, along with my dash going crazy, flashing rev needle, temperature gauge out of sync also. Car seems fine, no funny noises, oil lever is fine, no over heating. Also I checked the paperwork and the fuel pickup and oil pump were both done just a year ago.
I'm worried it's something serious but could it not just be a faulty sensor or dash?

Any advice or help?
 

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2001 Amulet Red 225 coupe.Owned from new as well as a Nurburg VXR & an XR3, all from new.
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Hi, Was it a yellow or a red oil alarm?
Just because the oil level is fine, it could have been running on a lower oil pressure than designed & causing a lot of damage.
Get the oil pressure checked without driving it any further.
Hoggy.:)
 

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Discussion Starter · #3 ·
It was a red oil light. Oh no really, but how will I get to work tomorrow lol.
I will call the garage tomorrow, how much ££ and time is an oil pressure check?

Thanks for the swift reply to.
 

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2001 Amulet Red 225 coupe.Owned from new as well as a Nurburg VXR & an XR3, all from new.
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Hi, The oil pressure light may be out, but if the pressure is lower than designed you will be creating even more damage.
It really requires trailering to your garage.
The 1.8T is well known for sludging up if oil changes are not frequent, perhaps the previousowner had the prob, dropped the sump & then decided to sell.
For your sake I hope not, but risky to drive it any further. A taxi may be cheaper.
Hoggy. :)
 

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Discussion Starter · #5 ·
Oh wow, let's hope not.
Just watched i guy on YouTube have this issue and remove the sump and replace the pickup, he did have some sludge but not to much, I'm sure that might be the case that mine is blocked as i don't think it was serviced for a while before I had it done. 😔😒 Now I'm worried.
 

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2001 Amulet Red 225 coupe.Owned from new as well as a Nurburg VXR & an XR3, all from new.
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Hi, That's the trouble there is no such thing as a cheap TT, whether before or after purchase. At £800 it must have been a private sale & sold as seen.
Hoggy. :)
 

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Discussion Starter · #7 ·
Correct, private sale. It was rough and it was a risk, but because of the extremely cheap price i thought it was worth it. I guess we will find out soon enough. I will keep you posted on the result. The guys i use have 30 years Audi experience and should no exactly what is needed. Thanks again for your advice.
These dash light are annoying too.
 

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2001 Amulet Red 225 coupe.Owned from new as well as a Nurburg VXR & an XR3, all from new.
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Hi, It was only £800 which of course may be a lot to you, but most spend twice that after purchasing a "good" TT just to get it reliable.
Best of Luck.
Hoggy. :)
 

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I had an oil light issue, i fitted a new pump and new pickup. It turned out to be the switch.

It only came on when hot, and how the system works is if the ECU doesn't see the switch operate within 1.5 seconds of passing 1500rpm then you get the warning.
If i accelerated slowly through 1500rpm or held the revs around there it would alarm. If i accelerated quickly past 1500rpm then no alarm. The switch was operating at a higher pressure/RPM

But not advisable to drive it to test this, i was confidant after changing the pump and pick up and looking around the crank and big ends that the oil pressure was ok.
 

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Discussion Starter · #11 ·
I see, now you mention it the only time the oil light has come on is when at running temperature. It never comes on when I start up the car for the first time, or even within the first 5-10 mins. But I agree, i will be booking it in in the morning.
 

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I see, now you mention it the only time the oil light has come on is when at running temperature. It never comes on when I start up the car for the first time, or even within the first 5-10 mins. But I agree, i will be booking it in in the morning.
Hi, when oil is cold oil pressure is higher. Oil press at working temp is the important pressure.
Hoggy. :)
 

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Discussion Starter · #13 ·
Gotcha. This car is gonna need some work. I have stiff steering, faulty dashpod, door windows have a mind of there own and now this warning light. Looks like you are right. But I'm willing to pay the $$ to get it right. It's a lovely looking car.
 

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You said the oil pump and 'fuel pickup' was changed a year ago.. I assume you mean 'oil pickup' if that was already changed then maybe the previous owner had similar intermittent issues. Faulty pressure switch? Or blocked and engine damaged.

Best of luck with this. Dashpods fail quite often, when I had a low battery my dash was all over the place.

800 is 1000 less than webuyanycar will pay.. maybe just try and shift it on for a few quid :D
 

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Discussion Starter · #15 ·
Yes sorry i meant oil pickup.
So I just visited the my local garage which happens to be an Audi specialist. There advice is a faulty sensor/switch. They advised not to drive the car but also said if there was genuine low oil pressure then i wouldn't have managed to drive more than 2 minutes let alone 2 weeks. The engine would of seized up.
I have driven 20 miles today as i had no choice and took the risk, oil light has not come on, engine is smooth and no funny noises. It is booked in next week for a new switch.
 

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you said the whole dash goes bananas at the same time? I would try and scan wit something like VCDS maybe there is a dodgy earthing which is not getting the correct signal from the oil pressure switch and also mucking up the other signals. there are some earth cables between the head, block and gearbox too.
 

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Discussion Starter · #17 ·
Yh think you might be right. They also said it could be faulty wiring or the switch. Either way they gonna replace. It's frustrating as i guess even with a new switch i won't know if that's worked considering the oil pressure light only came on randomly, say 3 times over 2 weeks.
Again i will keep posting on the result.
 

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Discussion Starter · #18 ·
And yh, the dash most mornings is flashing lights like the needles etc, sometimes the traction control warning light comes and goes, temperature gauge is out of sync. Very common issue i have learned.
 

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And yh, the dash most mornings is flashing lights like the needles etc, sometimes the traction control warning light comes and goes, temperature gauge is out of sync. Very common issue i have learned.
You definitely want to have your dashpod repaired, I would guess. While I think Dave and Hoggy are right about the switch first, you’ll need to have the dashpod repaired to rule out any more heartache from weird errors. They can be quite temperamental and can cause all sorts of false errors.

Good luck and well done on keeping another TT going 👍
 
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