Hi - your gonna have to excuse me as I have no mechanical know-how!
I have a T-Reg Astra Mk 4 1.4 AUTOMATIC. A new problem has arisen over the weekend and I really dont know what to make of it, so I thought I would ask the experts!
Whenever the car goes over 40mph there is a really bad vibration - it is noticeable throughout the car and the gas pedal etc, and makes a vibration-type shuddering noise. It does not affect performance of the car at all, and the car will still easily reach 70-80mph.
This vibration happens whether the automatic gearbox is engaged in 4th or 5th gear. The vibration is at its worse at about 60mph (thats when wing mirrors etc start to physically shake!), then as the car goes faster towards 70-80mph it does ease but not by much.
Unfortunately the dashboard doesn't have a rev counter so I cant specify the revs at which this happens. It certainly doesnt happen in lower speeds, even if they are at higher revs.
I use dual carriageways and motorways daily and am more than a little worried about this.
Does anyone have any ideas whether its engine / suspension or anything at all? Im totally clueless and really need some good sound and, considering my ignorance on all things cars, some very simple and easy for a layman to understand advice please!
I realise you must get hundreds of posts like this all the time, but any advice any of you can give me will really be very much appreciated.
Thanks to all of you in advance, I look forward to hearing from you soon.