sepulchrave

Use a big fat black cable tie, it's perfectly legit and a damned sight easier to install.

You won't get them to admit fault, just ask them to put it back the way it was using the original injector adaptation values.

The numbers are right, the point is not the actual sizes, it's the mixing of them that causes the confusion, because the ECU is measuring all four wheel speeds many times per second, if it sees the rears going slower during braking it assumes the rears are locking up and pulses the brakes.

The ABS would trigger randomly when braking, the ECU thought the back wheels were locking up because they were rotating slower. Yes it was a Mark 1 with Bosch ABS, the same system as other Polo 9N platform cars. It was incredibly annoying because it increased stopping distances needlessly. It stopped when I got rid of the 185/65/14 for 185/60/14 all round.

...and I've had ABS issues with 185/60/14 on the fronts and 185/65/14 on the rears. I'm erring on the side of caution with my advice based upon this experience.

It cares not a jot about the change in width by a few millimetres but a change of 5% on profile is a vastly different matter as @Carlston has clearly quantified above.

No it won't work. In your position I'd change all four tyres for the cheaper size because you can often get a discount for supply and fit on four and you can sell the two part worn tyres on ebay for a fair price to help defray the additional costs.

Carpet tape is insanely sticky both sides and cloth reinforced.

Unfortunately the cars ABS system won't like the front and back wheels rolling at different speeds so you'll need to keep all the tyres on the car the same size.

OCD madness, there'll be about a teaspoonful left in the ABS valve block dead ends, irrelevant. Just like the loonies chasing a few ml of old oil when they're changing 5L of the stuff, save the OCD guff for the therapist.

Good, the job obviously wasn't done right...

Yes, probably. No harm in topping up the charge as well.

Yes.

It has an ECU, it must have a MAP or a MAF, I know it has no turbo but that doesn't mean anything for the electronics.

Which air temperature sensor, MAF or MAP?

Try disconnecting the fuel temperature sensor, if it's reading high then the engine will be running too lean when cold.

There's a level plug you remove, once oil stops running out of it, it's correct. However, having a few ml more than 2.3L will make no difference whatsoever since the gearbox works on splash lubrication.

I vaguely remember from years gone by that people used to have this problem with the VRS gearbox when they needlessly and pointlessly changed the oil to aftermarket 75/90, did you use genuine VW oil, I seem to recall that the consensus was that Fuchs synthetic 75/90 was the only alternative that worked like the OEM oil. Who is "they" please?

...or underfilled it perhaps? What prompted you to change the oil, was there an issue you hoped would be fixed by doing it?

For this particular application, Rattlesnake oil...

Snake oil is NEVER the correct answer.

It sounds like the ABS is kicking in unnecessarily, possible causes can include an intermittently failing wheel speed sensor, uneven tyre wear or even a dodgy wheel bearing, different sized tyres can also do it.

The Fabia is mechanically the same car as a Polo in the drivetrain. ECP website is not terribly clever and neither are their cheap parts. Stick with a known OEM brand rather than imaginatively named Chinese crap.

I think it's fair and reasonable to have a little laugh, you were warned they were different part numbers because they had opposite chirality, you ignored the good advice and did the stupid thing anyway. Stop complaining and don't be priggish, I've helped you dozens of times in the past.

Why so serious?