Ditto on that. I think that my gas gets used up more when the windows and sunroof are open more than when I use the a/c. maybe thats because I tend to drive faster with the windows openI have the same condition on my 2010 SX. I've noticed that the a/c doesn't seem to affect either engine responsiveness or gas mileage when it's on.
Since V-6's aren't available in the Forte line, why even mention them? Remember, this is a Kia Forte Forum!!Four bangers are notorious for vibrating at idle. Especially with the ac on. It'll only get worse.
I4's are not perfectly balanced, so they vibrate. It is really only noticeable at idle. When the engine spins faster the vibrations aren't as noticeable, and the soft mounts help with that as well.
If you want a perfectly balanced engine, get a V6. Every power stroke has an opposite intake stroke to balance itself out. V6's also last a lot longer than an I4, or even a V8. One reason to spend a little extra. My mom's 11 year old Grand Caravan with 120,000 miles, 3.3L V6, idles smooth as glass. Much smoother than my brand new Forte! Gotta love those V6's!
Although, modern I4's are getting to the point where they don't degrade as fast, and stay balanced longer. So it's not as bad as it used to be. Still there though...
It's normal. The A/C compressor adds load to the engine, and to keep the RPMs the same, the ECU dumps more fuel. And hence the extra vibration. Pretty much every small engine will do it. Not very noticeable with big engines since they have more power/momentum.Well guys i swear when i turn the AC on i feel that the chair vibrates more. I am not sure if its normal. Got my car new but you know... factory defects sometime
HI ALL ,1.6 forte 2010 sx ,i have no vibration on car seatIt's normal. The A/C compressor adds load to the engine, and to keep the RPMs the same, the ECU dumps more fuel. And hence the extra vibration. Pretty much every small engine will do it. Not very noticeable with big engines since they have more power/momentum.