Ford Focus Problem..

[Fo' SHO]

You really can't tell that much from the video but my first guess would be a busted/torn flex pipe. Engine torquing over under a load will open up a worn pipe more and make it louder accelerating or really any time the engine is loaded.

But then again I don't even remember if the 05-07 used a traditional flex pipe to connect the header to the exhaust.

[Big Body]

Just putting my two cents in but have you checked the cv axels, or the hub bearings yet? If it only happens umder a load and durring accelleration chances are its and axel but I would need to see the car before I could say accurately. Also does it have a popping noise when turning?

[captcomputer]

I am going to throw an odd one out there and see who bites. I think it is in the transmission. Like someone has been doing neutral bombs.

I am going to say its not in the CV or Hub because it does it when he starts the car. Not moving. That sounds like a rotational noise not a leak. You got to get someone to put a bar or pipe up against that Transmission housing and see if you can hear the clatter better with it against your ear. Old car guy trick.

[Skrillex]

some people have been telling me that it is the transmission mount of that it sounds loose. but another friend of mine says it might be the transmission going out i really doubt that about the transmission.But i do think its my transmission mount.

[BowerR64]

Originally Posted by captcomputer

I think it is in the transmission. Like someone has been doing neutral bombs.

wow, thats a scary thought. Ide never do that to my car.

[mikebontoft]

check your trans fluid if you know how. that also sounds like my car did when the header was resting on the oil pan.

it may be internal trans or a heat shield. I only listened to it on my phone.