Hi everyone, this is regarding a 2006 octavia vrs estate with the 2.0 petrol.

 

The issue I'm having is a loss of power at high speeds. It will only happen briefly, and only usually in 5th or 6th when accelerating from "65" to "70". 

 

It first happened a few months ago and has never happened under hard acceleration at low speed, only ever on the motorway or dual carriageway.

 

The car has been otherwise reliable, other than a code for a boost leak that I have yet to get to the bottom of, although it's had this since I bought the car so I doubt it has anything to do with the issue.

 

Problem is as follows - depress the accelerator while travelling at above 60mph, car will momentarily accelerate, before cutting power to what feels like limp mode levels, were the car will maintain speed, but not accelerate faster than 60-70ish.

 

These power losses only last between 5-10 seconds, before everything goes back to normal. I've recently serviced the car, new oil and filter, air filter and spark plugs looked fine.

 

Other than this the car pulls well, and hits it's stated 0-60 time pretty happily.

 

Any input would be great. 

 

 

Fuel filter clogged impeding flow at peak demand, fault in fuel line (drawing air).

1 hour ago, MicMac said:

Fuel filter clogged impeding flow at peak demand, fault in fuel line (drawing air).

Wouldn't this also affect the car under full throttle acceleration at lower speeds, or would it only be when the maximum amount of air is being consumed? 

 

Would you recommend a new fuel filter as a good place to start? 

Acceleration from slow speed may be a short term demand whereas a foot to the floor event at speed may demand more for a longer duration and deplete any reserve after the filter that cannot immediately be replenished due to restricted filter flow... just my thoughts.

 

Replacing the filter won't hurt anything but your wallet, maybe a bad source of fuel sitting stagnant for prolonged periods due to recent travel restrictions has allowed biological growth which is the source of the theorised fuel flow issue.

 

I'm sure someone else will chime in with another theory and how to rectify.

19 hours ago, MicMac said:

Acceleration from slow speed may be a short term demand whereas a foot to the floor event at speed may demand more for a longer duration and deplete any reserve after the filter that cannot immediately be replenished due to restricted filter flow... just my thoughts.

 

Replacing the filter won't hurt anything but your wallet, maybe a bad source of fuel sitting stagnant for prolonged periods due to recent travel restrictions has allowed biological growth which is the source of the theorised fuel flow issue.

 

I'm sure someone else will chime in with another theory and how to rectify.

Thanks for the advice, will start by swapping out the fuel filter and go from there.