Similar to mine, it played up for ages and I knew I had a buggered plug on my knock sensor, I had that thing out about 6 times going from over an hour the first time to about 10min in and out, after much fucking around it turned out to be the connectors inside the AFM plug had corroded.

My power steering started to play up about 7yrs ago, it would get heavy sometimes turning into driveways but a few revs would fix that, it's at the stage where I have absolutely no power steering at all now but it's never made a noise or leaked a drop of oil, Corry gave me a pump a few yrs ago but apparently it's a little noisy and I'm very lazy, but it's like parking a Mack truck with flat tyres so gotta do something soon.

But it's never failed to get me from point A to point B.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.