Vibrations and brake booster vacuum hose

enargins
Fri, 21 Jun 2024 19:02:22 +0000
Maintenance/Repairs

Last year I had some repair work done on my car, and immediately after that the car started experiencing strong vibrations when in Drive or Reverse but standing still, and lesser vibrations when in park.

The work done was that they replaced the valve cover gasket, the exhaust manifold gasket, and the catalytic converter (with a kit). The vibrations started immediately after that.

I brought the car into several shops, but no one can figure out where the vibrations are coming from. The engine mounts are all good. The spark plugs are good. There don’t seem to be any symptoms of a rough idle. And the car doesn’t lose any power. So it’s very strange.

Yesterday I had my spark plugs changed and the guy accidentally disconnected the brake booster vacuum hose. With that disconnected, the vibrations were almost gone. Still there a little, but faint. After the reconnected the vacuum hose, the vibrations were back strongly.

So this seems to be a clue as to what’s going on, though I don’t know what it could be.

Any ideas of how the vacuum hose and braking system might be connected to the strong vibrations I’ve been experiencing?

Thanks!

12 posts - 5 participants