mk2

I was thinking that somewhere air is getting sucked in. You know, that seal on the shaft or plunger that pushes the piston on the master cylinder. Even if it boils, then cools down, you shouldn't get any air (or gases) produced. How have you plumbed in the rear circuit? You still running diagonal split or just fronts?

Not the fuse if they work...

Make sure you seal the inside membrane/film/foam sheet, or the inside of the car will get soaked. Butyl tape works to stick it. Nothing else sticks...

Bubbles? Master cylinder?

There are a couple of pics in the electric window how-to showing what they look like assembled if that helps? Or have a look at the windowon your other door

Ok, so the CCM is ok then if the windows work. It's the control switches. Water can get in them and corrode the contacts (rain, open window...). Can you control the locks with the lock control switch? If yes, then certainly the switches inside the lock mechs. You can't clean them with contact spray. They need to be dismantled (Sealed unit). Does the interior light come on when you open the door? Checked the fuse?

Never removed the switch from the rear, but it does look possible. I'd strip everything away first, including the steering wheel. Adds only an extra 20 mins work, but makes access so much easier. If you succeed, please post a pic from behind the mech in pieces! Just had a thought- @Sarahs Lupo had a similar problem about a year ago, with it cutting out... what was the cause of it, as I can't remember?! (Or may have been someone else).

It's possible but unusual if it's the CCM. More likely are the lock microswitches for the locking and the press button switches for the windows. Either way, the top door cards will need to come off. I'd start on the driver's door first.

Hey and welcome to club lupo Coil overs are the choice way, but you can go cheap and just use softer front springs from an older dub, like a Derby or old Polo. The heavier weight will lower it at the front. To drop it at the back, you could use lowering plates. I think @danno has a pair for sale. i don't get the debadging. Model yeah, but a lot of people don't even know what a lupo is. There aren't many about (at least not where I am), apart from on my drive.

I ask myself the same question daily... sadly, not just one Lupo either. Oh, and the noise was the new tyres. Hangs head in shame. The newish tyres had developed tread triangulation somehow (each 'lump' of tread had turned into a wedge). Each triangle side was slapping the road, a bit like how off road tyres sound on road. That characteristic hum. So swapping them left to right cured it. Mechanically everything is just fine thankfully. Still can't belive that the gearbox has so much slop in it.

I tried this a while back, too hard. lots of plastic to machine up, although LEDs make lighter work of it. But didn't look professional at all when done. Don't.... An option is to change the front end to gti, but still you'll need to change a lot (including the wings). try daylighter leds instead. What engine r u thinking? welcome to club lupo!

Welcome to club lupo yeah the tdi holds its value. Very economical and goes ok too. Easy to mod too. When you buy it, find lots wrong and haggle on how much it's all going to cost to get fixed.... take that off the asking price

Fixed. Same as a Lupo... Simply pull it through from the rear, using the old pipe as a puller. Cut the end off the old pipe (as it has a connector moulded into it) at the back of the car. Clean, then tape the front end of the new pipe to the cut end of the old pipe. Pull through, remove tape, reattach, plug in, sorted. Quite easy actually.

I bought a vacuum cleaner powered thing a while back. American invention. Basically a big metal can (5 US gallon/20litre) with a ball float and cage to hold it. When full, it blocks off the suction to avoid wrecking the vacuum cleaner. Works with just about any fluid, even mud. You have a hose that comes out of it with all sorts of adapters. Uses the Dyson concept of filtration. I've tried a few different suction things, but none "completely" empties the sump. The dip tube isn't usually located at the lowest point of the sump.

109. You could simply leave everything out (if practical), and drive it. If it dies on you again, try tapping the relay which will prove it (if it is a dodgy contact). Chances are though, just flexing the cables to it will have moved the contacts inside the relay a fraction- that might completely cure the problem! To remove the shear bolts, drill out with cobalt drill bits. Start small and work up. So like 3mm, then 5, then 8mm (if 5 or 6 doesn't work). Get a small bit set for a few quid.... always handy. Yeah too hot to work in the sun on a car. I just had a thought- never done it, but you might be able to access the ignition switch from the wire end? The shear bolts are simply to prevent access to the lock barrel.

I dunno if i like the idea of putting rose joints on the rear beam like that. Bigger anti roll bar, yes, but you want the ends to move a bit? lamborghini (and maserati) had loads of trouble using rose joints on the front of their countach. They're great in aircraft and boats, but i was always taught that you need the flexing, or you get cracks. Namrick dot 5 fluid used to be good. Not used it for a while. But i found that the piston seals give up sooner when you run hot. Rubber doesn't like being cooked. I wonder if you can get EDPM that works at high temps? Not my area of knowledge. @Skezza is our forum's chemist.... Those are some great pics! That quarry shot?! Cool. I love the custom brake system that I guess runs the rears?

Yeah. Sigh. Looks that way. Might see if i can find some of those panel clips while there. And get lucky if there's a lupo...

Here's a good 'un for you unusual problem watchers (not Lupo or Arosa, but closely related...) 🙃 I bet the guys at VW design never thought of this happening! Started up the ol' mk4 today. Very strong smell of petrol just as I was about to drive off. Hmm, "odd" me thinks. Better pop the bonnet and have a look and see what's going on... "Holy crap!" as I dive for the ignition key to kill the engine. Only about A LITRE of petrol sprayed all over the engine.... Yeah. Ok, so it appears that the main high pressure fuel feed from the fuel filter under the car has been bitten into, leaving a nice fine jet of petrol to spray over the entire engine bay. And while at it, decided to bite the brake fluid sensor wire clean off for good measure. How kind. Wire is an easy fix. How the hell do you repair the nylon fuel feed pipe other than replacing the entire thing? God, I just don't feel like going down the scrappies this week in this 30 degree heat. What fun... Never done one. I'm sure no easy job. Any ideas, lateral thinkers out there?

can't see the video

Pics please?

Cool :)

Yeah and Lupos are never in any local breakers... I don't recommend gaffa tape. It only lasts a short time once salty road spray has got onto it. Then it peels away and the door starts leaking. There used to be a gun sealant you could get which stayed tacky- smelled like hazelnuts in solvent and was beige in colour (only one colour available). Can't find it now, so have resorted to super expensive butyl tape. Shame, as trying to stick anything to polythene is near on impossible.

If it idles bad, check out the EGR delete how-to. Run a tank of BP ultimate diesel through it. The additives will give everything a good fuel system clean out.

I'll have to go and have a look... Thanks @Rich 👍🏻

Not a lot to look out for really. There are always age related problems with any car, but generally I'd say Lupos/Arosas age very well. The auto boxes are weak, and usually have been neglected. They need both fluids changing regularly (trans fluid and final drive oil), and I bet that it's never been done. Brake fluid is the other as well. If the inside is in good nick and not much rust present, go for it. Most mechanical problems are relatively easy to fix if you have some tools. For peace of mind, if you don't know the history, do all the fluids, belts and filters. Maybe tyres and brake pads too if they look old. Worth it just so you don't get stranded somewhere. There's a load of us on here that should be able to help you get out of or prevent any serious problems. welcome to club lupo