Help this car is bleeding me of money. I have a vibrating in the front end that i can feel in the wheel, gas pedal and see the dash shake. It only happen when I am accelerating after about 40 mph. When I take my foot off the gas and coast its perfect smooth. Also the problem is intermittent so, its been really hard to diagnose. I have had both front axles replaced, new rotors and pads on all 4 wheels, 4 new tires, 2 new rims, and new engine mounts. The problem is still there, And they still cant seem to find it. It is a 2000 S40 1.9 auto with 79k. Up until now I have had no probems with this car. The noise and vibration seems to be coming from the drivers side. I had thought maybe something with the transmission but it still is shifting smooth and accelerating just as fast.

 

How many engine mounts were changed?

 

i believe they changed the one on the passengers side and the one in the front of the engine

 

The reason I ask is because there are 4 engine mounts total.
Each one can cause vibration if bad.
The transmission one is a common overlooked mount that usually goes bad.
The air filter box has to be removed to inspect the mount.

 

Did you ever get this resolved? It seems kinda like whats happening to me (same car, same side, same mileage, etc.). In neutral, I revved the motor and there was absolutly no shaking. Would that eliminate whether it was a engine mount problem? Could this be a driveline thing?