About my car rushing at the gas door.

It is possible that the spark plug is immersed in water when washing the car, which leads to impure ignition, and a cylinder does not work, which leads to impact. I used to have a jeep of Mitsubishi Pajero, and the spark plug was soaked in water, just like your question. After that, blow dry the spark plug. You blow dry the spark plugs according to my method first, so that you won't waste the money of four spark plugs first, and see if you can solve the problem. If not, buy a new one and wear it!

Also check the brake system to see if the brake high-pressure pump has recovered, because the car is older. Sometimes the brake pads will be flushed when they bite the brake disc, that is, the brake high-pressure oil pump has no circuit, so it is best to check the brake system! I hope I can help you!