I've searched and can't really find anything that has the same symptoms...

When I start the car whenever she's been sat for a few hours, she starts fine, but after a few seconds the revs start to drop to about 500 and the engine almost stalls.

Cleaned the throttle body last night, and it's not made any difference.

This morning I when it was almost stalled, I pressed the accelerator, but nothing happened... then the revs jumped up.

Last service was only 5k ago, and she's only done 25k in total.

Any ideas of what I can look at next?

Morning,

I'm having exactly the same issue. Car is in the garage today to have it checked over for that reason so I'll let you know outcome

I had a Focus RS mark 1 & she did this often. I found if I reset the ECU (disconnect battery overnight, reconnect, start car & let it idle for 15 mins with all lights on, doors open, air con on, stereo on, all de mist windows on)then after that go for a proper drive i.e. go up & down gears & rev the car a lot. This seemed to work on the Focus so maybe worth a try???

I have this same issue and feels like about 2 weeks ago is started but getting a slight bit worse every time.

Starts up and can hear the exhaust warble, rev it a little and the revs drop before they raise. This makes you look like a bit of an idiot having kangaroo'd my car out of a space at work the last 3 nights. But after about 2 min of running its fine and doesnt do the problem there on after.
Throttle body only got cleaned a couple months back but will have a look again!

i would also say try an ecu reset before you take it in to a garage

I might give the ECU reset a go tonight and see what she's like in the morning.

Same problem as me, there seems to be quite a few of us with similar issues now, there are a few of us trying to figure out what the issue is by replacing possible faulty parts without luck at the moment. I'm considering making a list of the cars, mods and things tried so we can try and nail the problem.

make sure you give it a good run and can take up to 100 miles to sort itself out some cars can take 20 miles

I've had the same problem, notably from when I fitted the milltek as it didnt come with the sleeve and since then its been getting worse. Had to leave it a min or so then drive off as it kangaroo'd so much.

I chucked a load of exhaust paste on it last night and its not as bad now but it's still there. Hoping that fitting the sleeve tomorrow and ecu reset will sort it out in time for trip to AMD.

as soon as i mentioned this at the garage, the first thing they said was 'that ties in with the warm weather' which would explain why a few of us are having this but its not good if whenever it gets warm the car goes all wimpy on us

Mines better when it is warm, if it's been sitting in 23c heat all day when I'm at work, it's fine. It's the cold starts in the morning or on colder days where it's the problem for me at least.

Mine does it first thing when it's cold, and when I leave work in the afternoon when it's been sitting in the sun all day.

No mechanical mods on mine at all... so I can't blame that.

^^^^^ +1

Mine does it too from time to time.

I cant wait until it actually gets cold... my pas pump already sounds messed and its not even anywhere near a minus figure yet!