Buick Cascada Diesel Stalling & Fuel System Troubles

Had similar issues with a 2011 Buick Regal diesel. The symptoms matched exactly, rough running, excessive fuel consumption, and stalling. Initial auto repair diagnostics revealed multiple fault codes pointing to fuel delivery problems. The problem turned out to be more than just a basic fuel pump failure. The entire fuel system needed attention. The fuel injector wiring harness had corroded connection points, causing intermittent electrical signals. This made the engine computer receive incorrect readings, leading to poor performance and the check engine light. The repair required disconnecting the entire fuel injector assembly, replacing damaged connectors, and cleaning the connection points. Car mechanics also performed fuel injector cleaning since debris had accumulated due to irregular fuel delivery. This was a serious issue that could have caused permanent engine damage if left unattended. After the car mechanics completed the work, the engine ran smoothly again, fuel consumption returned to normal, and the check engine light cleared. These symptoms definitely warrant professional diagnosis from a reputable shop that specializes in diesel fuel system repairs. Recommend getting it checked soon, as running the engine in this condition risks more extensive damage to the fuel delivery components.

Thanks for sharing your experience with the fuel system issues. The symptoms do sound exactly like what I am experiencing with my Cascada. Your repair details help explain why my engine might be acting up. Since the problem turned out to be more complex than just a basic pump failure, can you recall roughly what the total repair cost was? Also wondering if youve had any related car performance problems since getting it fixed.

Based on my experience with the Buick fuel system repairs, I have good news on the cost front. After seeing the mechanic, they found the root cause was a defective fuel pump connection, much simpler than my initial repair. The fix only required addressing the faulty cable and plug connection to the pump component, totaling around 95€ for parts and labor. The automotive diagnosis was spot on this time, and since the repair, the car has performed flawlessly. No more engine stalling or rough running issues. The gasoline delivery system is working as intended, and fuel consumption is back to normal levels. This turned out to be a much more straightforward fix than the complex fuel injector problems I dealt with previously. Having the right mechanic who could properly diagnose the issue made all the difference. They specifically mentioned that catching these fuel pump issues early helps prevent more extensive system damage. The car is running great with no related performance problems for several months now. Getting the proper diagnosis and repair was definitely worth it.

Thanks everyone for the helpful advice. I took my Cascada to a different repair shop that specializes in fuel system diagnostics. Turns out it was indeed a failing fuel pump, but caught early enough before causing major damage. The repair bill came to around 400 Euro for parts and labor. They replaced the fuel pump and cleaned the surrounding components as preventive maintenance. The whole process took about 4 hours. Car runs perfectly now, no more stalling or rough idling. Fuel consumption is back to normal and the check engine light has stayed off. Really glad I got a second opinion and found a shop that knew what they were doing. The initial symptoms matched what others described, which helped me push for the right diagnosis. The mechanic confirmed that addressing these fuel delivery issues early likely prevented more expensive repairs down the road. Just wanted to close the loop and share how it worked out in case anyone else runs into similar problems.