Hi guys,new to this site

 

Last week i bought a 2012 octavia VRS (blackline edition)...love the car but ive noticed when ive 45miles+ left in the tank the car idles at around about 1000rpm...however,when theres 40miles or less in the tank it idles at 750rpm...

 

Was just wondering if anyone would know whats causing this?

 

Thanks

 

Chris

Diesel engine?

Yes 2.0 diesel engine

The idle speed should be +/- 850 rpm, difficult to see the difference as the dial marking is at 800rpm but 1000rpm is usually during a DPF regeneration.

Im nearly sure this is not a regen...as i say when theres 45+ miles in the tank it always idles at 1000..when theres 40miles and less in the tank it idles normal at 750/800...defo not the regen

Regens are programmed not to start if the tank level is low...

I see...ive took the car for long runs along the motorway and this still does not change anything

Wee update...ive taken the car for a proper run along the motorway in 4th gear and it seems to have done the job...thanks for the advice guys.ill defo use this forum in future 👌