Troubled

Well well well. It arrived today and I only went and changed it myself didn’t I?! This is coming from a guy who barely knows how to use a screwdriver! I’ve no way of knowing whether the part is genuine or not, but the car is running beautifully for the first time in ages. It’s been a long long time since I’ve seen anything close to +35mpg on the trip computer. Thank you all so much for your help. Hopefully the part is a goodun and it keeps me going for a while. I forgot to take a picture of the part before I fitted it but it doesn’t look the same as the old one - the writing is different. Anyway, we’ll see how I get on. Edit - I put in the code on the seal into the Bosch website and it says it’s a genuine part. Winner?!

That is a good price. Many thanks for the link. Will try that if the part I’ve ordered turns out to be carp.

Don’t they just! My local VW garage quoted me £402.68 to source and fit! They told me the VAG warehouse only has 4 of them in stock.

Thanks again. I’m much further forward than I would be without your help. Ideally I would like to buy new but that’s looking unlikely. And the reviews for any site that claims to offer new parts seem to be awful. Thanks again for your help. Edit - this looks like it might be a go-er!: https://www.ebay.co.uk/itm/304299853582?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=0P1hE5MfSD6&sssrc=2349624&ssuid=5LQyeanpSwi&var=&widget_ver=artemis&media=COPY

Ok. That’s really helpful. I’ve just dug out my V5 and see that the engine number starts and ends with ARX. Presume that’s right? As for the current MAF, I think it’s after market/cheap stuff so will the part number on that potentially be different? Edit - has anyone had any experience of using this site?: https://www.123spareparts.co.uk/oem-number/06a906461l?brand[]=30 also, I don’t understand what the differences are between the three results.

Hi all. I need to replace the MAF on my Octavia mk1. Can anyone please tell me where I can order a Bosch one from? Maybe provide a part number or link? I’m not very mechanically minded; From what I see online the images show a cylindrical kind of unit which the sensor sticks out the top of. I think I only need the sensor bit, not the cylindrical part. Do I have to buy it all? Thanks in advance.

So.... long time no post. Had a smoke test done today. Bloody great split in a breather pipe below the manifold (whatever that is). New parts ordered. Hopefully fit on Monday. Wahooo!

No news is good news, right?; Car still running very well apart from the odd bounce in revs when slowing down. Still yet to find the money for coil pack replacement but will do the coil earth shortly. Thinking of closing this thread down. Many thanks again for your all your help.

Thanks for not taking the p*ss out of me on the battery front! I'll investigate where the cable goes to/comes from, but just out of curiosity. I'll have another look to confirm the tape in the loom but from memory, it really did look like shiny electric rather than Matt fabric. I'll clean up the earth point too - it is rusty, but securely fastened. Interestingly I checked the dipstick during the day and it wasn't fully pushed home by a click. "That's it!" I thought. Pushed it in and..... dipping of revs still happened twice on the way home :( However!....it's still behaving comparatively well on the whole. Thanks again for taking the time to reply.

@kentphil1 (I think!) this is the coil pack loom. Does this look standard to you? Looks like it's wound in electrical tape to my untrained eye. It's not how I imagined it would look; Regardless, I'm not confident enough to mess about with anything here. I had enough trouble putting the engine cover back on! https://www.flickr.com/photos/spleencheesemonkey/27738885882/in/dateposted/ https://www.flickr.com/photos/spleencheesemonkey/27562360090/in/dateposted/ https://www.flickr.com/photos/spleencheesemonkey/27840295425/in/dateposted/ (you can see coil pack 3 that they wouldn't replace under warranty here) https://www.flickr.com/photos/spleencheesemonkey/27764255001/in/dateposted/ As a side note, I found a cable that isn't connected to anything. Out of interest, does anyone know what it might be? It comes from underneath the "box" on the near side front and goes nowhere. (Gotta love my technical descriptions eh?): https://www.flickr.com/photos/spleencheesemonkey/27764256501/in/datetaken/ This is the "box" the cable appears from underneath: https://www.flickr.com/photos/spleencheesemonkey/27562361990/in/dateposted/ Sorry for my ongoing questions. As ever, grateful for all of your responses.

Glad you got it sorted. Well done! Any chance you could mark the thread as solved so people can see at a glance that you had success?

I think this may well end up being one of those "spoke to soon" posts but I'm gonna do it anyway! I CANNOT get my car to misbehave at high revs and the idle seems to be a lot smoother. I've driven it the hardest I ever have and still can't get it to display the symptoms I had before the smoke test and throttle body reset. The only thing that's concerning me right now is a slight bounce/dip of the revs occasionally when I slow down to approach a junction or stop at a red traffic light. Confused much?! (Not that it takes much.) I'm still going to check the coil pack loom, replace the coil pack and continue to follow up on all the wonderful advice given here, however it will need to wait until payday at the earliest. Presumably the dip in revs mentioned earlier could still be a symptom of the underlying fault(s) which I haven't found yet?

@kentphil1 Thanks again for your input. I'll have a look tomorrow and hope that my head's in a better state to try and digest the info!

Many thanks for your response. I won't pretend to understand all of it but it's given me some further things to research. That first video is a fantastic intro to understanding fuel trim. Thanks for sharing. I now see the need to get some live logging done by someone who has the kit. As I've had both codes; running too rich and too lean, is it likely that it's the whatever is being temperamental is responsible for that?, or isn't it worth trying to guess without the using a VCDS on it? I'm asking out of interest rather than diagnostics btw. I'd like to be able to do the activities you've described in your post but I have a LONG way to go in knowing where to begin. You say I have a vacuum leak somewhere - would this have not been picked up by the smoke test? I'll have a further scour/give a shout out on the regional forums for someone with the kit who might be local. Again, thanks for your help.

Excellent. Thanks for responding after all this time.