Very rough running 200K
Hi, i need some help please. I have a engine vibration when accelerating. I started to notice it about 4 years ago and i still can't find the problem. It appears and disappears with no reason. Sometimes it runs smoothly, sometimes catastrophic and the whole car vibrates. I replaced the entire engine and it does the same. No errors on STAR. New MAF, plugs, O2, coils, filters, seals...
Please help me if you know something, i like the car and i don't want to sell it..
Thanks
I have Xentry C4 but what live data should I check?
What should i check at the ignition?
Mounts are new
Performance is good (0-100 measured) also when it's vibrating
What do you think is causing the vibration?
Wheels tires brakes suspension all changed and checked.
I'm thinking to try replacing the ECU, maybe there's the problem
Last edited by VladStefan; Feb 16, 2021 at 05:02 AM.






