2023 Seat Tarraco Gasoline Engine Issues: Black Smoke, Power Loss, and Stalling

Hey! I totally understand your situation. My 2020 Seat Arona faced similar issues about a year ago, and I was just as puzzled as you. My check engine light was on, I noticed power loss, and my car would stall out occasionally. After a visit to the garage, it turned out to be a defective wiring harness/plug rather than a fuel pump defect. It's actually a very serious issue because it creates high resistance in the engine's electrical system preventing sensors from reading right values and sending them to the engine control unit which ultimately affects a vehicle's performance overall. The guys at the garage had to diagnose the issue, take out the old wiring harness and install a new one. It involved several intricate steps like disconnecting the battery, removing various components to access the wiring harness, and replacing the faulty one with a new one. Though I was a bit paranoid at first, but let me tell you, it wasn't the end of the world. Once they replaced the faulty wiring harness, the car ran smoothly as ever. No more black smoke, the check engine light turned off, power was restored, and it idled smoothly. So, consider getting your wiring harness/plug checked. It might just solve the problem. Good luck!

Hey, thanks for sharing your experience! Interesting, never would've guessed it could be a wiring harness issue. Sounds like a right headache though. So, if you don't mind me asking, do you recall around how much it all set you back? And have you noticed any similar issues cropping up again? Thanks again!

Hey there! No worries, always glad to pass on some real-world experience! After getting the wiring harness or plug issue sorted, my car's been running better than ever. I thought I might land back in the predicament after fixing, but boy was I wrong. As for the sting on the wallet part, the mechanic billed me 95€ for the entire operation. That involved diagnosing the problem, removing the faulty wiring, and installing the new one. And about the fuel pump defect you guessed earlier, no such problem now since the mechanic gave it a look, all clear on that end! Remember, our beauty-machine on wheels also needs her health checkups! So don't hesitate to spend a bit here and there. Best of luck!

Wow, you're something else! Your details and hits on the situation are solid gold. I highly appreciate your response and your willingness to share your experience! I feel way more prepared heading into the mechanic's now. I'll make sure to bring up what you've mentioned about the wiring harness and plug. 95€ also sounds a heck of a lot better than dealing with a fuel pump defect. Again, thanks a million for the advice, it's given me some peace of mind amidst the car troubles. Safe driving out there!