hi guys
when I start my car the revs shoot up to 4000 rpm and stays there for about 5 seconds then it misfires and the revs
go down and stay at 1700 rpm
if I touch the throttle it shoots back up to 4000 rpm until it misfires then drops back down to 1700 rpm
if I attempt to drive the car it runs like a pig then throws up eac fault on the dash (fault code p2110)
I have changed the throttle body and egr valve and reset the ecu but it has made no difference
has anyone else experienced this ?

I think this is what happens if you mess with the tb while the battery is still connected. But resetting should have sorted it so dunno? Check connections etc.