Hello everyone. My 2013 facelift Diesel VRS Blackline, spends 3/4 days idling at 1000rpm then goes back to its normal 750 rpm.

I was wondering why ? Do i need to get the engine cleaned. I have already taken it for a long blast on the motorway.

This is happening about once a fortnight.

 

Thanks

Ben

Hi Ben, could this be a DPF regen? I drive a petrol but I have seen a lot of comments from oil-fired owners about high idle speeds when a regen is happening.

I've seen that idle in 3 cases:

1) DPF regeneration but it shouldn't happen that often without any other warnings;

2) cold weather (until it heats). Highly unbelievable this time of year;

3) hot weather (works hard to help the aircon).

Thanks guys for all your input. The garage where i bought it are having a look at it.

i will keep you updated on what they find 

this is 99% DPF regen, cycle every 2 weeks is quite possible depending on driving style and load if you're doing a lot of stop start or town driving then the DPF gets clogged a lot easier / quicker

Hello its me again. i have taken it back to the garage. He cant find anything wrong. No warning lights are coming up on the dash to tell him or me its a regen. He is having no fault codes (so he is telling me) come up when he plugs it in.

He changed the the gas pedal thinking it may have gotten stuck. Didn`t make any difference. i do about 20 miles a day round trip from work and picking the kids up, and quite numerous trips down to Devon about 160 mile round trip mixture of motorway and A  roads. 

Do you think the DPF is on its way out?  

i am at a loss, apart from this the car is fan-bloody-tastic.

cheers chaps 

2 hours ago, benbaki said:

Hello its me again. i have taken it back to the garage. He cant find anything wrong. No warning lights are coming up on the dash to tell him or me its a regen. He is having no fault codes (so he is telling me) come up when he plugs it in.

He changed the the gas pedal thinking it may have gotten stuck. Didn`t make any difference. i do about 20 miles a day round trip from work and picking the kids up, and quite numerous trips down to Devon about 160 mile round trip mixture of motorway and A  roads. 

Do you think the DPF is on its way out?  

i am at a loss, apart from this the car is fan-bloody-tastic.

cheers chaps 

on a normal DPF regen - you wont get any codes or lights on the dash.

 

difficult to say if the DPF is done without knowing the mileage, your general driving style, what temp your engine gets to etc. etc. etc. the only think I can suggest is 1 buy a ob2 DPF reader - 2 every time you see your car idle at 1k take It for a blast keeping the revs high like 2.5k up hill in 4/5. - 3 stick some redex in the tank as this helps to clean the engine by increasing combustion temperatures

Hello its me again. i have taken it back to the garage. He cant find anything wrong. No warning lights are coming up on the dash to tell him or me its a regen. He is having no fault codes (so he is telling me) come up when he plugs it in.

He changed the the gas pedal thinking it may have gotten stuck. Didn`t make any difference. i do about 20 miles a day round trip from work and picking the kids up, and quite numerous trips down to Devon about 160 mile round trip mixture of motorway and A  roads. 

Do you think the DPF is on its way out?  

i am at a loss, apart from this the car is fan-bloody-tastic.

cheers chaps 

 

Thanks for the reply Gissin... the car has 104,000 on it. i drive it like i did my petrol 1.4 tsi, not mental.  Wait till it warms before i rev it up.  But should the regen last 3/4 days?

2 hours ago, benbaki said:

Hello its me again. i have taken it back to the garage. He cant find anything wrong. No warning lights are coming up on the dash to tell him or me its a regen. He is having no fault codes (so he is telling me) come up when he plugs it in.

He changed the the gas pedal thinking it may have gotten stuck. Didn`t make any difference. i do about 20 miles a day round trip from work and picking the kids up, and quite numerous trips down to Devon about 160 mile round trip mixture of motorway and A  roads. 

Do you think the DPF is on its way out?  

i am at a loss, apart from this the car is fan-bloody-tastic.

cheers chaps 

 

Thanks for the reply Gissin... the car has 104,000 on it. i drive it like i did my petrol 1.4 tsi, not mental.  Wait till it warms before i rev it up.  But should the regen last 3/4 days?

no - but as I said depending on your driving - if you're not letting the regen finish it'll try again when you next start it up and so on until it eventually becomes clogged and knackered.

don't drive a tdi like a tsi - but yeah warm it up a bit is fine maybe a minute or 2.

either your dpf is on the way out or you're doing short runs which is also killing it

 

 

what car is it you put mk2 but also say its 2013??

Have you put a wee bottle of dpf cleaner in, also run her up the motorway for a good 20min's at a solid/constant speed and rev(maybe 5th gear at 65 mph)I forget the actual formula,try not to fluctuate at all, also dpf hates idling so do as little idling as possible, also seems to dislike chopping and changing diesel, so choose a good reputable garage and fill up there forever

Sounds similar to mine, mine is a 2011 VRS CR170.

 

My car is often idling at 1000rpm and it's not just the DPF regenerating, seems to be battery/alternator related.

 

Do you have a multimeter?      Check what voltage the alternator is putting to your battery at idle, mine's only putting 13.5v, seems the car is raising the idle on mine to up the voltage a bit.        My battery also goes from fully charged 12.6v (after a run) to 12.1-12.2v just sitting overnight.

 

I do have a code coming up on the central electrics module - "drive battery voltage intermittent" and it does seem to be casing slight suddering of my elec power steering intermittently when parking.

 

Be interested to see if you're having similar issues?

2 hours ago, Muzza80 said:

Sounds similar to mine, mine is a 2011 VRS CR170.

 

My car is often idling at 1000rpm and it's not just the DPF regenerating, seems to be battery/alternator related.

 

Do you have a multimeter?      Check what voltage the alternator is putting to your battery at idle, mine's only putting 13.5v, seems the car is raising the idle on mine to up the voltage a bit.        My battery also goes from fully charged 12.6v (after a run) to 12.1-12.2v just sitting overnight.

 

I do have a code coming up on the central electrics module - "drive battery voltage intermittent" and it does seem to be casing slight suddering of my elec power steering intermittently when parking.

 

Be interested to see if you're having similar issues?

interesting point, I'd not thought of that have you done a live data read when your car's idling at 1k to confirm either?

 

im surprised you're dropping 0.5v overnight I get charge will dissipate over time but by that much over a short time ..do you have many aftermarket parts inside?

Just now, Gissin said:

interesting point, I'd not thought of that have you done a live data read when your car's idling at 1k to confirm either?

 

im surprised you're dropping 0.5v overnight I get charge will dissipate over time but by that much over a short time ..do you have many aftermarket parts inside?

 

No, bog standard car mate.

 

Let me know what you get from your alternator if you could, be really interested to know, I thought they were supposed to put out 14v+ at idle?

 

Cheers! 

As others have said this sounds like a Dpf regen. My advice would be - if you notice your car idling at 1000rpm DO NOT switch off. Take the car on a motorway run for about 15/20 minutes in 4th/5th gear. Pull over when safe then check idle revs. If back to normal then return home. If still high repeat the process. 

 

My car does exactly the same. Usually happens every 160 miles or so. My car is generally used short journeys. I use shell v-power diesel. 

 

A diesel will not warm up at isle, a diesel needs to be under load to warm up, which is completely different to a petrol. A petrol will warm up at idle. 

 

 

Hello chaps, update on my idle problem. i have done everything suggested by you guys. It was still doing it, took it back to the garage where they did a forced regen.

Everything seemed ok. Took it back home, lovely, left it for an hour got back in it to pick the kids up....started up.... engine management light came up, coil light came up. 

Called the garage, the guys came out.   Injector had gone. 

Is this what was causing the idle problem ? 

 

Any thoughts?

 

I will say this the guys at the garage i bought the car from (Jean Pierre Skoda in Southampton) have been brilliant.