Since almost two weeks I try to find the solution for a problem that had ruined my holiday.
I was in a new euro-road trip but I got a problem near Vienna and due to that reason I have made the way back home (total of 1300 kms) thinking that I will have a quick and easy repair of my car and I can still make my planned trips.
The problem is a vibration of the whole car ( W126 280SE
) that appears at exactly 80 km/h , aprox. 50 mph, and that vibration getting stronger at 90 km/h is such way that I do not have the nerve to accelerate further that speed.
Over 90 km/h the car seams to disintegrate...The feeling is similar to that of crossing over stairs from a long distance...This is the closest that I can explain to you!
So...What have I done in two weeks:
-change of the tire rod ends ant the central tire rod...the old ones where OK but I have changed them just in case...
-change of the lower ball joint...again, seams OK but changed that too...
-wheel alignment and geometry done
-changing of the front tire with those from the back checking if the front ones are not out of balance...same vibrations
-change of the right side dogbone...(because the bushings into the dogbone seams to have a "play")
-change of the gearbox
-remake of the exhaust system
-change of the tires...inspection of the rims without the tires...all OK
-balance of the wheels...checking the balance of the wheels at an other wheel shop...all OK
-checking of the flex disc from the gearbox/drive shaft...seams good but I will change that too when I will get it ( have to order...)
-checking of the flex disc from the differential/drive shaft...it is good
-checking of the central bearing for the drive shaft...seams good but maybe I will change that too
-checking the engine mounts...seams good but I will change them too
I have made two individual test at two separate locations for the inspection of the suspension of the car and in both places the result were goodand they did not find anything that can be associated with the vibrations that I have described.
After all the thinks that I have made to the car the proble is exactlly the same as before. No improvement at all!
If anyone of you can help me with some advice I will thank you very much!