Hi my Octavia VRS has had a water pump and timing belt fitted and after 6 months my temperature gauge goes up into red n back down and it losing water, I've had the car checkedby the garage that fitted the parts and they've told me it's the water pump that's failed but the parts should be covered by warranty by skoda because it's a genuine part so I had a word with the local skoda deal in Sheffield Bickerton they booked it in, so I took the car in for them to check, they asked weather I wanted to do the emissions update which I said No! Few hours later they charged me £106 and said they need further investigation off another 6 hours because they couldn't find anything wrong with it and tryed selling me some front tyres saying that my tyres where very low on tread but there's 4 Mil left on then and there my winter tyres so after paying them driving my car away my DPF comes on all the time now and it drives every so slow and when I put my foot down the coil light comes on? Could any of you ladies n gentlemen on here shed me some light what to do? I've book it back in to the previous garage and there gona do my pump and belt for free I just have to pay for parts but Bickerton Skoda of Sheffield are bad news! 

I'd double check the error code as diesel engines don't have coil packs. Sounds like you are right in walking away from that dealer. Did the garage that fitted the parts also supply them? If so it is probably down to them to honour the warranty.

@MarkyG82  the OP has the Glow Plug light and the DPF light on. This means that the DPF is too full for a regeneration to take place, DPF light on its own means you need to drive it under load until it goes out (a gear less than you normally drive at should do it - see the manual), if the Glow Plug light is on as well then only the diagnostic tool can be used to regenerate it. 

 

If you are lucky a dealer can regenerate it using their diagnostic tool, if you are unlucky they will want to replace the entire DPF .

Are you sure they didn't do the emissions update.

That kind of sounds a little like they did and didn't finish the process with a forced regen (No I'm not at expert on this, but from what I have heard it's plausible)

I did tell them not to do the emissions update but my VRS tdi dsg drives really slow n feels flat and the dpf does come up now n not before? The engine when switched off sounds like the fans on and it does it all the time now after Skoda had it in!

Yep sounds like its not completing a regen. Are you able to take it on a run or is it that low on power that you can get it to cruising speed?

Don't mess around, it was working fine before you took it to the garage & it didnt as soon as it came out of the garage.

You should take it straight back & ask them to correct it.

The longer you take to ring them to book it in, the more chance you give them to say it must be something that happened afterwards & you will have to pay again for the investigation.