Hi I've had my octavia VRS for around 6 months now and since I bought it its had an issue which I can't work out and was looking for help.

Basically the car loses throttle when cruising on the motorway and always at the same spot when going to and from work, only for a few seconds then all is fine again! Mostly at part throttle not WOT.

Pressing the throttle does nothing, no stuttering etc.

Driving A and B roads it has never done it and it is not every time either.

No CEL and no faults on vagcom either so I'm stumped can anybody help? Thanks

hello..

 

 

so what are the follwoing parameters -

 

how far into the journey

what gear, speed, and rpm are you at and for how long before it happens.

 

how much does it drop revs and speed

Hi,

Its at 7 miles in to journey.

Usually nine minutes but if I'm caught in traffic on the same journey it will still do it at the same bit of motorway. 5th gear between 60/70 which is around 2600/2800rpm?

. Worst I've had was it dropping from 70 to 60 but unsure of rpm probably 2400/2500

When was your fuel filter last changed?, is your car standard or mapped?.

 

Is it doing this on the flat, or is the place it does this on an incline or slope?.

Could this be a transition from open-circuit to closed-circuit fuelling control? Might be worth trying a new coolant temperature sensor in case this is making the transition happen too early or too late or something?

It's completely standard and no idea on the fuel filter it was something I was going to look at. It does seem to be up or downhill and not on the flat

7 hours ago, Rotsun said:

the car loses throttle when cruising on the motorway and always at the same spot

Meaning geographic location? If so, then telling us the exact spot involved may prove very diagnostic.

The point it usually happens is going to work its a slight downhill and heading home its a slight uphill, all within half a mile of each other. These pictures show exactly where it usually happens

 

Bit of a long shot...is this near the communications tower beside Driftland?   https://www.google.co.uk/maps/uv?pb=!1s0x4887cb1216d558cf%3A0xfe753e4febb11a57!3m1!7e115!4s%2Fmaps%2Fplace%2FDriftland%2F%4056.1268232%2C-3.2816928%2C3a%2C75y%2C39.25h%2C90t%2Fdata%3D*213m4*211e1*213m2*211stfw4LSsTncv74L5HSJw3XA*212e0*214m2*213m1*211s0x4887cb1216d558cf%3A0xfe753e4febb11a57%3Fsa%3DX%26hl%3Den!5sDriftland - Google Search!15sCgIgAQ&imagekey=!1e2!2stfw4LSsTncv74L5HSJw3XA&hl=en&sa=X&ved=2ahUKEwiT55jAtbT4AhVMSkEAHQoKDoQQpx96BAhLEAg

On my way to work it would be but not on my way home. Its only done it once somewhere else, thing is I only really use the vrs for work tend to use a couple of old retro cars when I'm at home so that might be why it's only happened at that point.

@Rotsun Sorry, can't help further.

On 17/06/2022 at 12:50, Schtum said:

Bit of a long shot...is this near the communications tower beside Driftland?   https://www.google.co.uk/maps/uv?pb=!1s0x4887cb1216d558cf%3A0xfe753e4febb11a57!3m1!7e115!4s%2Fmaps%2Fplace%2FDriftland%2F%4056.1268232%2C-3.2816928%2C3a%2C75y%2C39.25h%2C90t%2Fdata%3D*213m4*211e1*213m2*211stfw4LSsTncv74L5HSJw3XA*212e0*214m2*213m1*211s0x4887cb1216d558cf%3A0xfe753e4febb11a57%3Fsa%3DX%26hl%3Den!5sDriftland - Google Search!15sCgIgAQ&imagekey=!1e2!2stfw4LSsTncv74L5HSJw3XA&hl=en&sa=X&ved=2ahUKEwiT55jAtbT4AhVMSkEAHQoKDoQQpx96BAhLEAg

that sounds like you have a theory...

1 hour ago, mac11irl said:

that sounds like you have a theory...

 

Not so much a theory as a hypothesis.  EMF's do strange things to electronic devices.  

A few years ago it was quite common for some BMW motorcycles to fail to start after stopping to refuel.  Pushing them away from the pumps would often solve the problem.

It seem that the wireless communication between the pumps and the tills was upsetting the immobilisers on the bikes.  

Have not been on here for a while, I agree with Schtum's comments about EMF. Years ago I used to teach part time at the local college.

 I used to park in the tutors c/park. I discovered if I parked in a certain row close to the automatic barrier my central locking

would not work and I ended up having to use the key to unlock the car.

This happened a few times, parking in a different bay the recurring problem vanished.

Perhaps a high voltage underground cable is close to the road and your driving through the EMF field.

Edited 19 June, 20223 yr by Silver Bullet