Honda City Engine Stalling & Power Loss, TPS Issues?

Hey there! I had a similar issue with my 2004 Honda Civic last year (I have some experience working on cars but nothing too advanced). The symptoms you're describing sound exactly like what I went through, sluggish acceleration, rough running, and that annoying check engine light! After struggling with it for a few days, I took it to my trusted mechanic who diagnosed a faulty throttle valve, the internal parts were worn out. The repair cost me about 345 Euro, but it was worth every penny. The car's been running like new since then. From what you're describing, it really sounds like a throttle body issue on your City. But before jumping to conclusions, Have you scanned for error codes? Does the problem get worse when the engine is warm? Any unusual noises when accelerating? By the way, the City and Civic share similar throttle components, so I might be able to offer more specific advice once you provide those details. Let me know and I'll try to help further!

Thanks for the detailed response! My car has 29187 KM on the odometer, and I actually noticed the symptoms getting worse after the engine warms up. I did get it scanned at a local parts store and it showed code P0120, which seems related to the throttle position sensor like you mentioned. No unusual noises during acceleration, just the jerking and power loss. I've been pretty regular with maintenance and just had a service done last month, so this issue caught me off guard. Good to know about the similar components between models, that's really helpful. The price you mentioned for the repair sounds reasonable if it completely fixes the problem. Did your mechanic try cleaning the throttle body first before replacing it? I'm wondering if I should try that as a first step.

Hey again! Good of you to get back with those details! Yeah, that P0120 code matches exactly what I dealt with. Just to share my full experience, my mechanic actually did try cleaning the throttle body first (cost me around 50 Euro), but the problem came back after a week. Looking back, I wish I'd just gone straight for the replacement to save time and that extra cleaning cost. Since your symptoms are getting worse when warm (just like mine did), and you're getting the same code, I'm even more convinced it's the same issue. My Civic had about 32000 KM when this happened, so we're in a similar boat mileage-wise. One quick tip from my experience, if you do go for the replacement, make sure they perform the throttle position relearn procedure after installation. My mechanic initially forgot this step and the car ran really rough until they did it. The whole repair took about 2-3 hours. I've had zero issues since the replacement (it's been about 8 months now), and my fuel economy is back to normal. Just make sure you get a quality part, I learned that cheap replacements can cause more headaches down the road. Let me know what you decide to do, I'm curious to hear if your experience turns out similar to mine!

Thanks so much for the thorough follow-up! It's really reassuring to hear from someone who went through almost the exact same situation. I think I'll skip the cleaning step and go straight for the replacement, you've convinced me it's probably the most cost-effective solution in the long run. I really appreciate the tip about the throttle position relearn procedure too, that's exactly the kind of insider knowledge I was hoping to get here. I'll definitely make sure to mention this to my mechanic when I take it in. I've already called a few shops and got some quotes, planning to get it fixed next week. The prices are pretty much in line with what you paid, so that makes me feel better about the whole thing. I'll be sure to insist on a quality part too, definitely don't want to deal with this issue again! Thanks again for all your help and sharing your experience. It's made me feel much more confident about handling this problem!