Just repaired the car, which is quite surprising, since I haven't been seriously under a bonnet in 20 years or more. Top tip- do it, it's easy. ish.
We have an elderly but happy Nissan Micra, and the throttles go, so eventually they start to stall a lot. Apparently it's down to some electrics in a sealed bit of the throttle, so you can get a new one from Nissan for £400, or a refurbished part from around £80 (usually nearer £150!), or you can roll up your sleves, hack it open and resolder the joints. Which I've just done. I shall be smug for most of the next two weeks off. As long as it doesn't fritz on me.