Scooby45 Posted December 18, 2016 Share Posted December 18, 2016 Hi. I've been searching for information regarding a screeching sound on mondeo st tdci under acceleration. The sounds starts at 2500 rpm which indicates to me to be turbo related. I've checked the EGR to intercooler pipe which seemed week so replaced with a known good one. The car has recently had a new EGR fitted. Boost doesn't seem to be down that much. I've taken the pipe off the turbo to check for play but all seems good. Does anybody have any ideas where to look? Thank you Quote Link to comment Share on other sites More sharing options...
WES180 Posted December 19, 2016 Share Posted December 19, 2016 Who fitted the EGR, is it tight and sat correctly? Seem to remember mine making a funny noise on my old ST TDCi. Quote Link to comment Share on other sites More sharing options...
Russ Posted December 19, 2016 Share Posted December 19, 2016 Is the Alternator belt tight? Quote Link to comment Share on other sites More sharing options...
Tomson Posted December 19, 2016 Share Posted December 19, 2016 The screeching might be air trying to escape from one of the induction pipes on the way up to the intake manifold from the turbo - the 2.0D in both Ford and Volvo are known for the 'screech' (it's also been referred to as a shriek) - although granted a different engine, it might be the same thing... Quote Link to comment Share on other sites More sharing options...
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