GeneseeS4

I just bought a used 2008 2.0T A4. It sounds like a John Deer tractor at low RPM's coming from the engine. I'm wondering if I might have somekind of exhaust leak near the manifold. Is this sound common? Does anyone know what causes that? Is there a way to make it sound more like a sports car/BMW?

Thanks

keithandstef

Common sound. I don't know a fix though.

suicideking

what is the mileage on it?

GeneseeS4

24,500 miles on it

suicideking

i read somewhere that it maybe your chain tensioner, i could be wrong.

Redline9k

Its common with these ULEV engines, especially our direct fuel injection variety.

Sometimes its the cam tensioner, but with 24k on the clock, I highly doubt it.

I test drove several A4 2008s and they all sound like a diesel and vibrate slightly at idle...as soon as you touch the gas everything smooths out.

Some that have aftermarket chips have raised their idle RPM to 1000 or 1100 which also "fixes" the "problem"....but its not a problem, and perfectly normal.

A4_in_CT

Coming from an '02 A4 with a 1.8T, I'll admit at first I was puzzled by the sound. While I would describe it as a diesel-like sound, mine sounds nothing like a John Deere. While there is most definately a different sound to the engine from any other gas powered car I have ever driven, my ear does not hear the sound as being bad or indicative of a problem, it's just the sound the engine makes.

Of course, the '02 has a Milltec exhaust, so engine sounds are not very noticeable. I'd love to hang a Milltec on the '08, but I am hoping to stop the mod madness for a while.

To further confuse you, the '11 Q5 2.0T we bought for my honey to drive does not make that noise! Go figure...

naiku

The Q5 2.0T is probably a 2.0T TFSI and not a 2.0T FSI that is in the B7 A4, most likely that is the difference.

GomerPyle

Huh? Please enlighten me.

naiku

The 2.0T FSI was used in the B7 A4, the B8 A4/Q5 etc use the newer 2.0 TFSI engine, it is still a 2.0 turbo, but it now makes more power, uses a timing chain instead of timing belt, has a cam roller instead of a cam follower, is much quieter than the 2.0T FSI, I am sure there are other differences, but I don't know them all. I have driven a B8 and a Q5 with the newer engine and it is much smoother than the 2.0T FSI in my A4.