Volkswagen Polo engine idle rpm fluctuating

Car: Volkswagen Polo
Variant: 1.4
Model Year: 2006
Categories: Running Rough, Starting & Power Loss
just noticed when i moved my wife,s car that engine idling between 600-700rpm to 900-1000rpm,which is quite a large fluctuation.i have filled the fuel tank and put in a bottle of fuel additive.also,according to vehicle build checks,the car is not suitable for the new E10 fuel,so i have to put in super unleaded(E5).
Posted: May 15, 2022 (2 years ago)
What is the idle speed when engine at full working temp ? Depends on when in 2006 car was built / model / engine , on fuel type required .

Volkswagen
With the exception to those models listed below, which used the first generation FSI engines, E10 is cleared for use in all Volkswagen petrol engine vehicles.
Polo – 1.4 litre (63kW) FSI made from February 2002 to June 2006

You are correct and safer to do what you are and use the super unleaded(E5).
Posted May 15, 2022 (2 years ago) Edited on May 15, 2022 (2 years ago)
I have same problem with -06 bky 1.4 polo. When start cold, idling is ok(~900->). But whet it goes warm idling is 600-700 and it starts shaking. I tried clean throttle body but nothing change. What next?
Posted Jan 30, 2023 (1 year ago)
Motor sounds is very good and stable but shaking starts. Nothing lights or warnings not came. The air box is cleaned too..
Posted Jan 30, 2023 (1 year ago)
Check / clean MAF
Posted Jan 30, 2023 (1 year ago)

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