- 2010 Honda Fit Sport M/T
- My shift point is consistently between 3200-3700 RPMS. If I shift & slow down, and the RPMS dips below 2100, and do a gradual speed up rather than downshift, my car makes a nasty noise. It sounds almost like metal-on-metal, but when I get over 2200 RPMS the noise completely stops and it only happens in gears 3-5. Any ideas?

It'll happen at all times no matter temp or if the car is hot/cold as well!

Wondering mostly if it's TCT/Timing Chain related. Been going on for over a year and I've had a friend who is a past Honda Tech say it's fine......starting to not fully believe the advice after his half-baked inspection.

 

I have that exact same sound on my fit. Does it sound like it is coming from under the car / back of the engine? I have tried to track that sound down to no avail, but to me it sounds exactly like my old car and its heat shield. I’m thinking that it only is under load at a lower RPM that it resonates with it.

the only problem is that I can’t be 100% because I haven’t truly found the culprit yet.

 

Try taping your exhaust with a rubber mallet. If it's the heat shield, you'll probably hear it doing so.

 

This one might require some good headphones and a quiet place. But this is the sound that I am getting right around 2000 RPM.
https://photos.app.goo.gl/riapfM4VVv4e36j66

 

I found an interesting video that might help in the situation

 

That video is your best bet for a rattle that sounds like its from the engine. Had the same issue on an automatic, the automatic transmissions also make noise when driving slow with dirty fluid, changeing the fluid a couple of times and a filter change rectifies this issue. Since you have a manual it's most likely the exhaust heat shield.

 

I just made a post of my own but my 2018 6 speed manual does almost this exact thing you described. It’s not too bad in 2nd but very prominent in 3rd around 2k rpm. Did you ever figure anything out?

 

Based on the video, it definitely sounds like it could be a heat shield. Especially when it comes and goes around specific RPMs. Heat shields can tend to rattle only at certain frequencies.

 

Anyone coming to this post now. If you have an automatic transmission (North American model) GD (1st gen) or GE (2nd gen), the transmission has been known to make a metallic grinding noise. The only thing that remedies it is a transmission drain and fill. The less often you do that, the more noisy it'll get. I drove with the noise for a year, nothing happened. Transmission drain plug was clean. The heat shield in the video earlier in the post is also a common issue, I had to fix it on my GE with a washer. The transmission noise has been reported many times, with some videos of it on youtube. I dug through the forums and found that someone eventually figured out what it was in their case, some bearing in the transmission, but they only got there after taking it apart like three times and trying different things. The problem seems to stem from the change in transmission fluid viscosity midway through the production of the honda fit. There is no cause for alarm or panic with the noise, many owners have lived with it for years and never had issues.