Ever since I have owned my Focus, there has always been annoying vibrations that I can hear/feel from the inside of the car and it is only noticable when the engine is idle and it gets worse when having air con, lights or anything extra turned on etc. It only does this as well when the engine is warm and idling at the normal 800ish rpm and it never does this after a cold start when the engine is cold and idles just over 1000rpm until thne engine is warm. Now when looking under the bonnet when the engine is warm & with the air con on or the electric etc, the whole engine block is shaking and causes some of the wires to shake too! If I can, tomorrow I will record a video of it and post it up.
I have had a garage check it out and they told me that it was the driver's side engine mount as it also shakes at the same pace as the rest of the engine does and the 2 other mounts are rock solid and do not give out any shaking/vibrations at all. Now today I had the driver's side engine mount replaced by the same garage but sadly it doesn't look like it has fixed the problem as when pulling up outside my house with the air con on, the vibrations are still present!
I am now out of ideas, I am very annoyed as well that I went ahead with changing the engine mount and that it has made absolutely no improvement! Maybe you guys could shed some light on this as to what else the problem could be down to? I have also read up that it could be down to a dodgy spark plug or HT lead (though the engine light is not on at all), crankshaft pulley etc.
Thanks a lot all! - Liam