Timing chain tensionner / Hard to start / Crank no start / Crankshaft position sensor

[minch]

Just want to share with you guys my last experience.

Got check light ON, i don't remember the exact code, but it was related to crankshaft position sensor. Also the engine was hard to start, i had to keep the key pushed til engine starts not like before when i had just to press and release it.

I drove almost 10 days like that thinking i only need to replace crankshaft position sensor. I ended up buying a new one from Audi. I was surprised when i replaced it that the engine still doing the same.

Few hours later, engine wont start anymore. Towed it home and did some research, to find out my timing chain tensionner was the problem.

The chain jumped 2 tooth.

I was very lucky, valves were OK. Don't forget to replace the tensionner on these 2.0T as they always fail on B8's, i think from 2009 til 2012 or 2013 or it may cost you an engine.

Good luck.

[kdaffy]

more and more of these threads - i need to get this done ASAP. What was the mileage on the car when this happened?

[Allowencer]

Sorry to hear man. Many of us are in the same boat.

Still holding strong to 1 failure reported a week all. Get it done now before further damage can occur

[buelldozer]

It's getting to the point where we need a master / sticky thread for all these!

minch how many miles does your car have?

[seanf86]

buddies just jumped 3 teeth, no valve damage thankfully, had to replace the chain too, old chain was way longer than the new one.

[gohan]

Yikes! Hoping AoA approves my oil consumption repair so when the engine is open, they can take care of the guides

[buelldozer]

Yikes! Hoping AoA approves my oil consumption repair so when the engine is open, they can take care of the guides

If you get a Stage 2 then Force them, at gunpoint if necessary. to do the timing chain, tensioner, and guides. Even if they say it isn't necessary yet. JUST GET IT DONE.

You'll probably have to pay for the parts but it's well worth it.

[piotrowr]

https://topclassactions.com/lawsuit-...engine-defect/

https://www.pacermonitor.com/public/...ICA,_INC_et_al

Keep all your receipts...

[elscotto80]

I had mine serviced under extended warranty. The chain was fine, but i got a new tensioner and a whole lot of other bits. Part of the job was covered due to my valve gasket leaking, but not the whole thing. Glad i got mine done now, i am at 75K. Good luck to those with these issues.

[piotrowr]

All timing chains stretch so the purpose of the tensioner is to keep it tight throughout the lifetime of the engine(correct me if I'm wrong). That's the defect, sudden failure in keeping it taut = recall.

[TCHUN003]

Piotrowr, thanks for the links.

[Allowencer]

All timing chains stretch so the purpose of the tensioner is to keep it tight throughout the lifetime of the engine(correct me if I'm wrong). That's the defect, sudden failure in keeping it taut = recall.

100% correct

[pierreb]

I had mine done at 120k miles and the guides were still in great condition. We still swapped everything out though. Expect to replace the cover too as it's practically impossible to remove without bending it badly.