Should i replace audi 2008 a4 thermostat along with timing belt and water pump 120,000 miles

The link to the timing belt video will give you all the info you need to replace the timing belt driven water pump. How to properly replace the timing belt on Audi A4

no need if its working fine

You may be overheating. The water pums have been an issue with these cars (Audi,VW). The impeller breaks and will no longer push water. This can be verified if you remove the thermostat and turn the impeller with your fingers (vehicle off of course). If you're able to turn it replace water pump, thermostat and timing belt.

1. Possible air lock in the cooling system, does the internal fan blow hot air? You can blead the system through small bleeding points on the water hoses.

2. Head gasket gone, do the water pipes to the rad expand under pressure?

3. Faulty thermostat. Thermostat controls the amount of water directed to the rad.

4. Not enough anti freeze.

5. Rad cooling fan not starting when supposed to causing overheating. Does the tempture gauge in the dash read normal.
Let me know how it goes.

The manual states the maximum, I always try to replace them around 90 thousand
miles. On some engines, the valves and pistons are an interference setup and if the
timing belt jumps time or breaks ,then the cylinders strike the valves ,requiring
remanufacturing of the head.

You need to replace the timing belt in your 2005 Audi A4 1.8T at 112000 miles (180000 km). Replace also all timing kit: belt, water pump, guide roller, and tension roller. See picture below:


Please do rate my response. Thanks!

An airlock ?? all vw group engines have to be vented after filling with antifreeze/water.....they used to fit a tap on the top heater hose,sadly no longer.so you have to undo the clip and vent it manualy.....

The current smart thinking advice about Audi A4 2L manual timing belt water pump etc replacemnt mileage is 115 000 miles (180 000 km).

If the radiator is being replaced, yes, it may be a good idea to do the timing belt and water pump as well as the thermostat at the same time. If your car is in the area of 80K miles, yes, for sure.

Once the radiator is removed it is much easier to do the timing belt so this will save you some labor costs.

Alright there your on the money there. A4 audi's and The 2liter golfs do haed gaskets at around 145-150,000 miles. the oil's foamy kinda yellowie cream. Tip for ya When you do the head gasket cahnge the rad and water pump at the same time. Mine didthe same it's costly but worth it for piece of mind, Plus is the only time you get to the water pump apart from changing the timing belt.