Messed around with a few option, checked belt config - all okay there, the noise seems constant (but not very loud) on each lock, wondering if the P/S fluid being old could be causing the squeal?

I agree with the comments relating to lock causing engine to rise/fall, thing is all the whirrly bits move too -

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)