Hi, hope you're all well.
I recently bought a 2002 Mk6 Fiesta 1.3 petrol (Duratec engine) as my first car.
It had been running great until I was sat waiting in traffic the other day. All of a sudden, with the car in neutral and my foot not touching the accelerator at all, the car started to rev itself up and down - as if I was pressing down on the accelerator heavily and letting off over and over again. I turned the engine off and restarted it and it seemed fine until I approached a junction uphill in 2nd gear and it accelerated forward of its own accord! I'm a bit scared to drive it as I worry that it's going to send me shooting out into traffic.
Now, when the car is sat idle, if I press down on the accelerator lightly, the car stalls and cuts out completely. Also, when slowing down to about 5mph (with the clutch down), the car stalls.
When driving uphill, it feels as though the engine is misfiring and there's a lack of power for a brief second every now and then.
Research online points to it being a problem with the Idle Air Control Valve or something. I am clueless when it comes to cars so that means very little to me.
I'd really appreciate it if anyone could point me in the right direction.