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View Full Version : DIY Belt Tensioner Pulley A4 1.8t



NogaroA4
12-28-2005, 11:31 AM
This DIY is how to change your Belt Tensioner on a 1.8t Audi A4 This was off a 1999 AEB Engine.

Is Mine Bad?
You can tell if your Belt Tensioner is going bad or is bad if you hear a whining sound when your start your car or your car is at idle...This signifies that your bearings are going bad inside the Belt Tensioner. Another way to tell is by taking the tension off the belt and spinning it by hand. If you hear any sound what so ever most likely its going bad?

What Tools do I Need?
You will need a 17mm wrench to release the tension
You will need one 13 mm wrench to break the bolts loose
You don't need but is helpful to have a 13mm gear wrench
You will also need a bungee cord (You will find out why later)
http://img.photobucket.com/albums/v441/00CIVICSITEIN/IMG_1216.jpg

How long is this going to take me?
It took me 30 Min's from start to finish

How much money is this going to cost me?
85 from ecstuning.com...Its cheaper other places but you cant put a price on their customer service...So I always order from them.

How do I take it off?

1st pop the hood and let the engine cool down...Grab a beer or some food. Then Loosen the tension off the bolt using the 17 mm wrench and turning the wrench clockwise.
http://img.photobucket.com/albums/v441/00CIVICSITEIN/IMG_1212.jpg

Then loose the three bolts that hold on the tensioner
http://img.photobucket.com/albums/v441/00CIVICSITEIN/IMG_1215.jpg

Then remove the tensioner by pulling up through the top of the engine bay...(Its really not that hard)
You will now have the empty space as seen below
http://img.photobucket.com/albums/v441/00CIVICSITEIN/IMG_1214.jpg

Now you can compare and make sure you have the right one
http://img.photobucket.com/albums/v441/00CIVICSITEIN/IMG_1213.jpg

Now you can install the new one the same way you took the old one out...But wait this is where the bungee cord comes into play...Once you have the new one bolted in and all ready to go...Your going to say to your self o **** my hand is to fat to fit down there and grab the belt to place it back over the alternator so using one hand you move the tensioner clockwise and using the other hand you lower the bungee cord down and hook the belt then pull it up and you can now place the belt over the alternator still holding the wrench clockwise...Once the belt is on you can let go of the tensioner and your are now finished....

Mawhitey
12-28-2005, 05:14 PM
Excellent writeup

4ingDrive
12-28-2005, 06:07 PM
Nice job!

onemoremile
12-28-2005, 06:16 PM
your timing is remarkable. two days ago it started rattling. now i don't have to search!!

bitterchild
12-28-2005, 06:51 PM
of course it could be one of the two other accesory belts whining [;)]

k0mpresd
12-28-2005, 06:53 PM
the waterpump is not an accessory [;)]

qtek16
12-28-2005, 08:18 PM
so yeah that whinning....would u classify a higher pitched whinning/screeching at startup in cold or rainy days as a problem ;)

bitterchild
12-28-2005, 08:27 PM
Originally posted by k0mpresd
the waterpump is not an accessory [;)]

true but mine's whining like a bich

NogaroA4
12-29-2005, 05:41 AM
Originally posted by qtek16
so yeah that whinning....would u classify a higher pitched whinning/screeching at startup in cold or rainy days as a problem ;)

yup thats when i noticed it the most ...it was like 10 degrees and the tensioner was screaming

SpoolIt
12-29-2005, 05:50 AM
Is the A/C belt tensioner as easy to swap out? Anyone have experience with swapping that while the car is not in service mode or during a timing belt change?

Daft
12-29-2005, 07:36 AM
The A/C belt tensioner isn't exactly a piece of cake to get to and remove but, it can be done in 20 mins.

Remove the belly pan and you'll find it on the front of the motor shifted towards the passenger side.

IIRC, the A/C belt can be removed without disturbing the serpentine belt.

qtek16
12-29-2005, 09:22 PM
Originally posted by NogaroA4
yup thats when i noticed it the most ...it was like 10 degrees and the tensioner was screaming

soo i mean its been doing that off and on for awhile, should it be something to be reallly concerned about because im getting ready to drop a grand on this car between timing belt and some other stuff.

bitterchild
12-29-2005, 09:36 PM
dont drop a grand, I'll do it for less :) Just did one the other day

qtek16
12-30-2005, 04:40 AM
aight man i mean u do live close enough....

SpoolIt
12-30-2005, 09:03 AM
Anyone know if Ina or Meyle is the OE supplier of the serp. tensioners?

AudiOn19s
02-24-2006, 01:45 PM
I know this may be really stupid...but in the first step it's stated to use the 17mm wrench to loosen the tention on the belt. Where is the 17mm nut in that first picture that is used to release the tension. I can see the three bolts for the tensioner..and I can physically push on the tensioner pulley with my hand and move it...but I don't see where the 17mm wrench is used to relieve the tension on the belt.

greenz
02-24-2006, 01:47 PM
you wouldn't happen to have a write up on how to do the belt on an S4 without taking the front end off would you ? lol.

4ingDrive
02-24-2006, 04:49 PM
Originally posted by AudiOn19s
I know this may be really stupid...but in the first step it's stated to use the 17mm wrench to loosen the tention on the belt. Where is the 17mm nut in that first picture that is used to release the tension. I can see the three bolts for the tensioner..and I can physically push on the tensioner pulley with my hand and move it...but I don't see where the 17mm wrench is used to relieve the tension on the belt.

It's the square piece of metal sticking out of the side. You can see it on the pics above.

CEL_STAYS_ON
11-14-2007, 03:43 AM
any diy for 2.8? is it similar?

tunerb5
11-14-2007, 08:30 AM
I think the tensioning part of the tensioner is bad on mine. It chatters like crazy if you rev it. You cab see it moving back and fourth. If I push down and hold the tensioner and then rev it it's fine.

audiFUEGO
11-14-2007, 04:43 PM
nice write up... Btw is ur a4 really nogaro?

tunerb5
11-14-2007, 06:46 PM
nice write up... Btw is ur a4 really nogaro?

Yea, he repainted it.