Mis leading mpg from trip computer

bretti_kivi said:
Timing belt has no recommended interval from the manufacturers. Replace the tensioners and water pump at the same time. Mine is 10 years old and I consider that it really ought to be done before stressing the engine significantly; it's a cheaper prophylactic fix than the repair. 8 should be ok, but I understand wanting to replace at that age. Most agree that 8-10 years is acceptable or 90k miles / 150k kms.
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This is nonsense. The A2 didn't have a recommended interval for belt changes when new certainly, but Audi subsequently moved to the 5 years / 60k miles recommendation that matched the warranty provided by the belt suppliers. In any case, Marc has a TDI which imposes considerably greater strain on the belt than your petrol engine does.
 
I just went into a little more detail on this, I'll refer you back to the wiki at wiki.a2-freun.de; https://wiki.a2-freun.de/wiki/index.php/Servicearbeiten

90k kms change interval for AMF
120k kms change interval for BHC.

No times are given. 5 years guarantee from Conti? I doubt that very much. Most seem to agree that 8-10 years as a lifespan is acceptable and after that it should be done.

Petrols have no prescribed change interval.

- Bret
 
Ok so the long and short if it I need to bite the bullet and get it done and do tensioners at the same time. I tend play these things safe had a nightmare out come on a Renault once upon a time because ignored it (that said it was french).
 
bretti_kivi said:
90k kms change interval for AMF
120k kms change interval for BHC.
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The AMF and BHC engines have the same block, the same head, the same injectors, the same cam and crank shafts, the same compression ratio, the same flywheel, the same power output, the same toothed wheels, the same water pump, and the same cam belt.
At one point during the A2's production run, the cam belt tensioner system was changed (though this did not coincide neatly with the change from AMF to BHC engine codes). Are Audi suggesting that a revised tensioner allows the cam belt to safely run for an additional 30,000km?

Cheers,

Tom
 
I do not know. I do know this is the listing and I'm assuming - knowing just how many ex-Audi mechanics and employees are on the forum - this is directly from service manuals. Make of that information what you will... I didn't realise just how much was carried over between the two engines.

- Bret
 
bretti_kivi said:
No times are given. 5 years guarantee from Conti? I doubt that very much. Most seem to agree that 8-10 years as a lifespan is acceptable and after that it should be done.
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Conti's warranty: https://www.continental-engineparts.com/eu/en-gb/Aftermarket/Support/5-year-guarantee
Endorsed by Audi UK (dealers notified owners of the change in policy in 2009): https://www.a2oc.net/community/index.php?threads/cambelt-change-info-from-audi.11180/
I'm not going to debate this further since you know it all.
 
bretti_kivi said:
...this is directly from service manuals. Make of that information what you will...
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Well, I think that's it in a nutshell; make of it what you will. I don't believe that Audi's literature about their own cars is as accurate as it perhaps should be. The service manuals seemingly suggest that the gearbox oil is sealed for life, which is nonsense. There's also reference to the fuel pump in the fuel tank on TDIs, which doesn't exist. There are plenty of mistakes in the wiring diagrams, too.
In this particular case, I don't believe that AMF owners need to change their cam belts more frequently than BHC/ATL owners. There's no good reason for that. I think that our collective experience over 20 years now trumps the inaccuracies in Audi's documents. Unfortunately, some of those inaccuracies are, seemingly uncritically, carried over onto the A2 Wiki.

Cheers,

Tom
 
Ok glad to see you be cleared that up but my question still stands are there brands to seek or avoid in ref to replacement of timing belt tensioners and water pump. My mechanic will source and suggest and I just want make an informed decision. Cheers
 
My mechanic uses TPS so I'm betting he'll quote this. Would that kit include the water pump and how many hours do you think would be reasonable to do the change Inc water pump tensioners . Cheers
 
timmus said:
Oh, yeah, that got rather lost in discussions!

For what it's worth, I've always used a complete cam belt kit from TPS. That way I can be assured that it's OE quality.

Cheers,

Tom
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I can second that £28.00 for AMF water pump
Good price in my book? had to give the old one in exchange or surcharge applied
 
I'd expect to pay approximately £350 for an OE-quality cam belt change, including the belt itself, the new tensioner, roller, water pump and labour.

Cheers,

Tom
 
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