Dean17

Thanks for this but I know about the regen cycle. My car does it more than most and I’m used to it but this is something different. As I said it’s hours after I’ve driven the car so it’s not in the middle of a regen,m. It’s when it’s been sat for a few hours after I’ve got home and is locked and sat on the driveway so the car is cold. The fans just come on randomly on full power. Then when I unlock it the fans stop straight away, it’s really weird.

Hi, I have a Skoda Octavia and for some reason the last couple of nights I’ve noticed my car has been running the fans so hard that it sounds like an aeroplane taking off. This is hours after I’ve got home from work so it can’t be anything to do with the cooling system. Any ideas would be greatly appreciated. Thanks.

I drive it 4 miles to my sons school on a morning and then take him. Start the engine again and from there I usually drive about 15 miles to the petrol station and then after that various times sat idling and driving various distances for the rest of the day as I’m a taxi driver. Was normal all day today but about 4/5 o’clock I was sat in heavy traffic for quite some time and then it started. Seems to take about half an hour sitting at 1000rpm and then after the half hour was back to normal. Did it twice yesterday. Once in the morning after I’d taken my son to school and then again in the evening but the traffic was terrible all day yesterday so I was sat in stop start traffic most of the time.

I wonder if running the car for long periods of time each day will affect the frequency of the regeneration process. I’m out driving it on and off for 8-10 hours most days, not doing massive mileage though.

Ok cheers.

But would the start stop not disrupt the process if it needs to sit at 1000rpm to complete it?

Just to update anyone who’s curious. I took my car to my local Skoda specialist who put it on the Vcsd and it said coolant pump c stuck. He said because it was an intermittent fault it wasn’t allowing the regen to complete so he wiped the fault off and put it into a forced regen as there was 23g of soot in the dpf and apparently if they go over 80 they can’t be regenerated after that. Seemed ok for the next week until I had coolant pump c replaced on Friday. However, it still seems to be going in to active regen too much to me. This morning about 9am the stop/start had stopped working, the engine had set itself to 1000 rpm and the fans came on. 10/20 minutes or so of this then the start/stop worked again. So I thought it’d finished, great that was a normal regen. But after working all day and sitting in bumper to bumper traffic and only doing about 50 miles it started doing it again at about 7pm. Only this time after 10/20 minutes of 1000rpm while idling it kept going to start/stop as if it had finished, then I would start the engine again and move up in the queue and it’d go back up to 1000rpm and say the start/stop was disabled again. I just don’t understand why it’s doing it so much. Long shot I know but had anybody else had this?

The funny thing is I drove the car for 10 and a half hours straight except for a 20 minute stop over 500 miles the day after I bought it and it seemed absolutely fine. Then a week later after running very short runs around the town I did the same trip again and the same. A few days after that it started over heating. Got a new water pump fitted and it seems fine with regards to the instruments and computer but only now have I noticed the other problem. Got it booked in with a Vw specialist on Saturday morning anyway so hopefully he’ll shed some light on what’s going on with it.

Brillaint. That’ll be at least a grand won’t it?

Well I’ve driven it for the full day again and let it do it’s own thing, turned off start/stop for the most part and got it out for a good run so all seemed fine. At about 4 o’clock the bonnet seemed really hot and then it started stuttering when I was trying to accelerate. Fans on again full blast when I stopped and turned engine off. When I first bought it about 5 weeks ago it was overheating and the gauge was moving up and down and bleeping at me warning me to pull over. Had a new water pump fitted after the other only lasted about 2000 miles and it’s been ok with regards to the needle moving but it seems to be getting hotter now than it did with a faulty water pump to me.

Ok thanks for the advice everyone. I’ve just thought, could running it on eco mode all the time make it regenerate more? I’m going to put it on normal for the day and see if that makes any difference.

Thanks for the advice! It seems to be running a lot longer than 10 minutes and everything feels very hot under the bonnet though, that’s my main concern. I bought this car about a month ago and have already had both water pumps replaced due to overheating so I’m very sensitive to anything else that could cause potential damage. The temp gauge has been solid 90 since the new main water pump was fitted and the oil fluctuates between 90 and 110 so it all seems fine but I feel really on edge about it. I’ve got no come back on the garage that sold me it either as I’m not classed as a consumer due to the fact I’m a taxi driver so classed as a business.

It’s a 66 plate and done 88,000 miles.

It is but it’s not new and has only just started doing this every day now. Do you think it could be partially blocked?

Hi, I’ve recently bought a Skoda Octavia mklll. I am a taxi driver so do all manner of distances in the car but just in the last week I’ve noticed on the short runs around town when I’m sat in traffic the start/stop will stop working, the fans come on and I can smell burning. It seems to do this continuously until I get a longer run and can do some decent speed for a decent amount of time. Also it’s seems more sluggish when the fan is running and when I check under the bonnet it’s so hot that the bonnet stand is almost too hot to touch. Is this normal?