Hi, i am facing an issue with my Chevrolet Beat diesel since quite sometime now.
Background - due to a flood situation 4 years ago another car saied and sat on my windshield causing the windshield to shatter and water to flood in to my car. The water drained of within two hours however the car was sitting at the service center for 2 months approx before it was fixed. Since then i start getting an error for EGR valve, post multiple cleaning sessions of EGR valve that error code did not come up but ever since engine Overboost code p0234 started appearing. I have changed my turbo twice both the times my turbo turbines shattered. Earlier the vehicle was cutting turbo and loss of power noticed when touching 3000 rpm at any gear. Later the performance of the car increased. Now o get the same error but the performance doesn't drop. Error code comes up when i touch 100 kmph which bring the rpm to 3000 on 3/4/5th gears. We have cleant the intercooler, replaced it. Swapped ECM too, checked with a new turbo too but the problem persists. Can you suggest what may be the right course of action to deal with this issue.