firepower

New Member

• Jan 26, 2013

• #1

I noticed a slight rattle under the bonnet a couple of weeks ago, came, went came back and got more noticeable. I bit the bullet and decided to take a look.

Water pump, it has to be the water pump thinks I. Craddocks, seventeen quid, bargain. Pulled the old one off and in its place now sits a shiny new one. The rattle is still there

Serpentine belt off, motor started, no rattle.
Serpentine belt on, motor started, bloody rattle.

Next step, replacement altenator or is it something that is common on a 300tdi that I am missing?

Ta in advance

 

blue beasty

Leaks an prone to bits dropping off

• Jan 26, 2013

• #2

Tensioner?

 

S

scoobystu

New Member

• Jan 26, 2013

• #3

Have you put a penny in behind your tensioner ??

 

firepower

New Member

• Jan 26, 2013

• #4

Hadn't thought of the tensioner

It is a mechanical rattle not the belt squeal

When I put my mush in the engine bay it sounds like it is on the right hand side

 

alex8882

Well-Known Member

• Jan 26, 2013

• #5

the tensioner has a bearing could be that that about to give up if it is replace it asap as that belt as you know drives the water pump. mine had to have a new engine when my mate owned it due to the belt coming off

 

DEFENDER90-DAZ

New Member

• Jan 26, 2013

• #6

Check that you haven't got a loose pulley

 

firepower

New Member

• Jan 28, 2013

• #7

Checked each pulley, all tight so on a hunch I changed the alternator, hey presto a quiet Disco again. Now I have a spare who sells those kits to put twin alternators on