Sweet, thank you heaps, that's a little clearer, will check it out this afternoon

Hi guys,
This has been an interesting read.
My S70 is doing the same,
pulsates when not loaded.
50-60ks
80-100ks
park w/ revs held 3000+
cruise control doesn't need to be on for issue to reveal itself
Replaced coils, plugs & cleaned MAF sensor and throttle throat.

Only difference is ...