S4 111

I was not aware about the issue of the timing chain. When I sold BMW's in my youth (many years ago), we were told that one of the advantages of their timing chain over a belt was that it never had to be replaced. My TT had a timing belt that had to be replaced at 90-100K miles.(although the consencus was at 60-65K). When and why does the timing chain of S4 have to be replaced and at what cost? I thought I was finished with timing belt/chain worries?

VerrÜckt

I believe it's the tensioners which will cause problems, not the chain itself.

JDBlueAudiS4

The Manual says timing chain replacement however its on the chain but the tensioners that need to be inspected and replaced if need be

S4_Cinci (I S'edTFA)

by the time the chain shows some minute elongation, the rest of the engine is likely to be getting a little "tired" as well. But the tensioners would most likely fail before the chain ever would. I've replaced timing chains before but that was because the engine was already torn apart for some other problem and the replacement was prophylactic in nature.

RKA

that will actually last as long as they claim.

[/tongue-in-cheek]

JDBlueAudiS4

well we already know the tensioner on the alternator is bad on possibly all 04's

MachtigAvant (v3.0)

but no noise ever. Hmm...

Also, I'm trying to get a copy of that TSB.

JDBlueAudiS4

not all of them are bad, but an overwhelming majority are. Anyone who has the noises you heard on my car needs to have it replaced.

Peter04S4

You're not talking about the prominent whirring sound from the engine, are you?

MachtigAvant (v3.0)

the whine/groan at cold-start's. Doesn't sound good.