Odd sway

[buickman104]

Wasn't sure where to post this, but i figure I might as well post it here since it has to do with my chassis. Since I bought my car it has done a strange then when I am at a stop light where I am completely stopped and the chassis of the car feels like it wants to lurch forward by itself. As if I were playing with the brake pedal modulating pressure.

Today it did a whole new thing while I was waiting at a light the car started rocking left and right. I have no idea why the car does these things. Anyone experience anything like this before?

[Explicit_Spade]

I bet you have a Vacuum leak somewhere.

[buickman104]

Kinda have a feeling of that too. I went over the engine vacuum systems with carb cleaner. Used up a whole can and found nothing.

[Explicit_Spade]

What about around the LIM and Supercharger all the way around? Or where the injectors seat into the heads? Is the brake booster hose secure?

[buickman104]

All checked. The problem has been there since I bought the car. Also recently I swapped in a Gen 5 in which I switched the LIM gaskets about 2 weeks ago and still the problem persists exactly the same expect now that the rocking/swaying is new. It started today.