Car shakes and looses power when I open the cap on top of the engine on 1992 Volkswagen Cabriolet

My car does a little noise and I open the cap on the top of the engine and it looses power and then it gets it back and I don't know what the problem with it is

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
0 answers