Help - disheartened

[Nialld]

Evening all. 

I recently purchased a '15 2.0 powershift. 

When bought, The car recently had the gearbox done with all the bells and whistles. Then after a month car started behaving funny. I got the gearbox flushed as advised.

Basic description of issue. 

Car starts and runs perfect when cold. 

6 mins later. 

The rev counter starts jump see vid below. 

The car have a jumping/forwards and backwards Motion. 

 

This only happens when I'm not appealing extra pressure to the accelerator pedal. When coasting or slowing down this happens. The wife is convinced the first time she felt it was 60 seconds after fueling the car at tescos. 

 

The longer the car runs the worse it gets. After 20 mins or so it even does it in drive at when stopped at the lights. 

I dont feel safe driving it now, I only Purchased this for the twin boys(loads of space). 

If I fleexe/horse the car drives perfect, it goes through the gears like a dream. 

££££££ wasted. 

Thanks guys

 

 

 

 

 

[DaveT70]

That looks like an engine, not transmission issue.

Get it checked out.

Make sure the battery voltage is good

[Nialld]

On 5/23/2024 at 9:25 AM, DaveT70 said:

That looks like an engine, not transmission issue.

Get it checked out.

Make sure 

Took a mechanic today. No faults on transmission or engine. It did read body control module fault. 

Interestingly I discovered it was remapped before the gearbox was sorted?? 

 

I'm taking to a tuning specialist to have it removed then go from there? Would this be correct 

[DaveT70]

I doubt the remap is causing that issue

It looks like you have a BCM fault, especially if you have a BCM code

[macaulays]

Evening Nialld,

I purchased a '16 Galaxy a month or two back that did a very similar bouncing revs on the motorway within half an hour of driving away but also felt a bit like it was sitting up and down with each bounce also. By next night I had the 'transmission limited function' message flashing up and AA advised when they came to recover it back to the selling garage that they could see before codes relating to comms issues between modules that showed over the last 1,000 miles or so ( which the AA inspection is had done a few days before hadn't picked up annoyingly just using a standard obd scanner!).

Not sure what the ultimate diagnosis was as I returned the car to the garage the next day as didn't fancy opening a transmission-related can of worms but could suggest the symptom is a precursor to codes appearing if you have the more detailed scanner/software available. Do you think there is any gear during happening with the revs oscillation or just engine behaviour as Dave was suggesting?