mk2

Gorgeous!

Even though I don't own a GTi, I have a feeling they are they exact same as Polo 9N ball joints. @Rich and I and a few others here on CL were researching the similarities. If you can accurately measure one of yours (pics?), I still have an old 9N polo BJ sitting on my bench for reference. Regular Lupo BJs have a 10mm thread and a smaller cone. Welcome to Club Lupo pics of car?

How much €?

Banff, Canada

If you keep car, I'd change the belt and tensioner. Then it'll be good for another 6 years or 50k miles. 👍🏻 Sounds like a good little car. Any more pics- in and out?

So you can check the cam timing without taking everything to pieces...

Depending on which gearbox you have, you can see the zero TDC marker on the flywheel through an access hole in the gearbox bell housing, at the top. Often it is under a plastic or rubber cover to keep dirt out. Put the car in top gear to turn the engine (by pushing the car). 👍🏻

Fuel? As in not enough. Can you read live data while driving? Look at the O2 numbers. Else it also sounds like cam belt may have jumped a tooth. Cutting out is often crank sensor.

Yeah. Also check it when cold to see if it reads about 20 or whatever your average overnight temperature is.

Yes it is possible. The new coolant temp sensor also might be faulty. There are many that fail. You need to use diagnostics "live data" to check.

Thermostat?

Yep. 👍🏻 It's easy when the gearbox is apart because you simply push it out from the inside. And the shaft doesn't get in the way.

Usually there's a built-in cross over unit, mounted on the back of the speaker cone to separate out the low and high frequency signals before they get to the speaker/tweeter coils. So that shouldn't be an issue when swapping to a different set. The high level dash mounted tweeters also have a crossover built in, so they just connect up as normal. Just use the existing wiring and all will be good. The standard Blaupunkt or Philips speakers are actually very good- if you can find a used, working pair somewhere. Same as Polo, Golf and Bora from that era... Just check the connector type first. Good bass response and relatively high sensitivity (lots of sound for low drive power). When replacing, make sure you keep the waterproofing well sealed or the carpet will get wet every time it rains... Welcome to Club Lupo

Pics on the ultimate gearbox thread... You can swap it from the outside if you're very careful (as it's easy to score the shaft). The easy solution, unless it's pouring out is to simply keep topping up every year, via the speedo pickup hole. The level is right when the plastic gear is half covered.

You can remove the engine under tray and wing liners to check everything. You can see from below the car. You don't need to remove the wings and bonnet. I would check inside the sills for corrosion. You need to remove the rubber bungs to have a look. If necessary, you can spray more wax inside when it is dry. 👍🏻