Turbo Issues?

[TDCiST]

Guys, my dad's Mondeo has developed a lovely noise! To me, and my tuning friends this is what we aim for! However on the standard Mondeo STTDCi it's not right!

You can hear a lot of turbo chirp through the exhaust on lift off, or gear change.

Do the mondeos have a separate wastegate that could be stuck open? Or would sticky vanes on a VNT cause this?

He is hoping it's not the turbo as that would be expensive!

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[FOCA]

ST-TDCIs do not have a seperate wastegate - the boost pressure is controlled by the VNT - there are 2 types,- euro3 with pnumatic actuator, and the later euro4 type with the electronic actuator

The noise usually occurs lifting off/ changing gear, and is normally due to a leak in the exhaust just in front of the back- box, where it corrodes, even a tiny pin-hole can make a noise, eventually, it can rust right through and with the weight of the exhaust, the back-box can fall off!

ST-TDCI rear exhausts are no longer available from Ford, (apparently) only the tit-x ones that are hidden/ "turn down" but you could probably fit a tail pipe to these or obtain a rear section from an afrermarket supplier like Puma, etc

[TDCiST]

Cheers FOCA,

At least it could only be the exhaust! Actuator still works and moves, I've checked that already.

I'll investigate more later!

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[TDCiST]

FOCA,

You my friend are a fountain of knowledge! See below!

One Mondeo st back box, in the boot...

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