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[I_want_an_Omega]

2004, TDci (115) with 56k


Ok, a couple of weeks ago we had the glo-plugs changed as they were all u/s - now starts 1st time on the button in the cold.

A few days ago it started squealing when the engine was under load & the Focus forum guys sugested that the aux belt may have stretched. Easing off the throttle cures the problem - but you can only accellerate really gently before the onset of the squeaking. Does it in all but 1st & reverse & at all speeds. Loading the elctrics with lights/heated screens etc makes no difference so I dont think it's the alternator.

I had the aux belt replaced by a trusted mechanic but the problem is still there. 

The belt had stretched a bit with age - but not excessively with the mech reporting that the tensioner/iders also appeared to be in good condition.

The problem only seems to come on once the engine has warmed up.

So, any comments welcomed.

TIA - Rob

[vauxfan2k]

does it do it with the aircon switched off?

I know the clutchplates can squeel on the compressor if dry or any corrosion from lack of use.

[I_want_an_Omega]

Good question - I'll give it a try & see, but the point is that it's doing it with the a/c switched OFF so would that prove anything?

[vauxfan2k]

well if it does it when the car is not moving, then it kind of excludes drivetrain, unless its a thrust bearing, more inclined to think a tensioner ?(aux or cambelt) or the a/c compressor

[serek]

will have look for you on saturday

[Debs.]

Water pump (impeller or bearing/s) or perhaps a power steering pump or a vacuum pump bearing? :-?

I have heard injection pumps making some `orrible noises in the past, too! :-/

Such noises can be tricky to identify: my Disco`s serpentine belt idler/tensioner pulley made a very peculiar 'flock of budgies' sound (common on the 300 tdi Discovery), simply fixed with a 'precise realignment wedge' (a penny) behind the tensioner bracket.

[I_want_an_Omega]

will have look for you on saturday

Top map  - bring warm clothing!

[I_want_an_Omega]

Problem solved 

Turned out to be one of the large Jubilee clips joining the air pipes for the turbo charger not being fully tight. It was removed to do the glo-plugs & not fully tightened up again 

The screech was obviously the turbo either blowing or sucking air and nothing to do the with aux-belt at all  :-/

Hey ho, that's life

[Debs.]

A result!