austin101385

I have a 2011 Mustang GT with the 6-speed manual transmission. Lately, I've noticed that on a cold start, when I take off in first gear, there is some kind of vibration/rattle under the car that feels like it is close to where the accelerator foot is, almost like something is rubbing bad. This problem is multiplied when making a left turn out of work, but also happens on a straight-away. After the engine warms up, I can't replicate the problem. This is what I'm worried about with taking it to the dealership...they won't be able to reproduce the problem if it is not a good cold start...and I really hate to be without a car for a whole day to let it sit and get cold.

Any suggestions or anyone have this problem?

Thanks,
Austin

MrSandman

I get the same thing. Metallic rattle from about 2000-3000 rpm. Goes away when engine warms up, and is less intense if it's above 70degrees or so in the am.

austin101385

UPDATE: I think I used the wrong description of the problem...there is no rattle. There is a bad rubbing sound/feeling when accelerating which is worst at cold starts and sharp turns, but has gotten worse and now occurs even after the engine has warmed up. It's almost a feeling that there is resistance when I go to take off. I'm going to try to get into the dealership Monday, they might just have to let it get cold though and I will just have to wait around because this is my daily driver.

I checked all the exhaust points and everything is tight and stiff...nothing budged when I tried to shake it.

austin101385

Here's a video clip, mostly for sound, with the camera in the floorboard. It is a little hard to differentiate the rubbing sound from the exhaust note in the video, but there are times where you can definitely hear the rubbing sound. And it is not just a sound, it almost feels like resistance when starting a turn and a lot of vibration under my feet.

You can kind of hear it at

0:04, 0:08, 0:14, and 0:24...but you really hear it at 0:32, 0:42, and 1:16.

2011 Mustang GT Premium :: 2011Mustang50RubbingNoise.mp4 video by austin101385 - Photobucket