Timing belt or chain? - VW Forum :: Volkswagen Forum
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post #1 of 9 (permalink) Old 01-23-2012, 02:24 PM Thread Starter
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Timing belt or chain?

Hello all. I figured coming here would be the best bet.

I have a 05' Jetta 2.5 liter. Not sure if its a 4cyl or 5.

Has 112,000 miles and has neither had the timing chain or belt replaced. The water pump is slightly leaking though.

I've tried looking up to see which it has, but get two different answers. And i know if its a timing belt, its WAY over due.

Its an 05' With the 06+ body style, its a 2.5 liter, automatic. If that helps any.

Any help would be great!
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post #2 of 9 (permalink) Old 01-23-2012, 02:25 PM
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if its over 100k i would look into getting the timing belt and water pump done to be safe.


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post #3 of 9 (permalink) Old 01-23-2012, 02:40 PM
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The 2.5L is an Inline 5 cylinder engine run on a timing chain. Usually you replace them every 100k, but you can go longer, you just have to listen for the chain noise. But since the water pump needs replacing do the chains while you're at it.

2001 golf gls 2.0 totaled...
1987 Jetta Coupe Deluxe daily and project

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post #4 of 9 (permalink) Old 01-23-2012, 05:17 PM
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you might want to get rid of the car or face paying alot of money to have it fixed.
Vortex Media Groupnot sure if you can read the link.
the early 2.5's 2005.5-early 07 suffer from timing chain and guide failure. the guides wear down and the chain eats into the block. basically ruins the engine. this happens around 100,000 miles as well. vw fixed the issue for the 07+ 2.5's.

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Last edited by _FUBAR_; 01-23-2012 at 05:20 PM.
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post #5 of 9 (permalink) Old 02-01-2012, 09:12 PM
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Quote:
Originally Posted by 04gti1.8t View Post
if its over 100k i would look into getting the timing belt and water pump done to be safe.
2.5 motors do not have a timing belt. It has a timing chain which is "supposed" to last the life of the motor. The early motors had some issues with faulty designs of the chains and guides. Timing chains by design are extremely labor intensive to replace. If the water pump is leaking, that alone should be addressed.
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post #6 of 9 (permalink) Old 02-08-2012, 06:31 PM
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I also thought the chains will last the life of the engine and do not need a maintenance replacement such as at 70K or so like the timing belts - is this correct ?
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post #7 of 9 (permalink) Old 02-08-2012, 07:48 PM
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they were supposed to last that but a design flaw in the guides threw that concept out the window. google mk5 2.5 timing chain failure or recall. lots of topics on it.

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post #8 of 9 (permalink) Old 02-09-2012, 01:43 PM Thread Starter
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Sorry got busy and kept putting off replying. I'm pretty sure its a timing chain as well.

I know in my Saturns the timing chain never needs replaced.

The Jetta isn't make any noise or anything concerning the chain. Will look into replacing the water pump though.

Also, a question about the keyless entry. It doesn't work, probably just a battery. Is it a normal battery or a special kind only for VW?
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post #9 of 9 (permalink) Old 02-09-2012, 04:18 PM
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probably the battery. you can open up the key fob and change out the battery.

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