Check Engine Light On problems of the 2001 Hyundai Santa Fe

While being in park - engine will surge - rpms jump to about 6,000 and accelerates like it wants to go. I will put car in drive and rpms come down but still wants to accelerate. This same thing happens even at stop sign - with foot on brake. Car unintentionally accelerates on its on once foot comes off brake. Check engine light may or may not be on. Very scary situation and almost scared to drive it. This happens every now and then but lately it has been going on for several days. Noticed the problem about 3 months ago.

While driving at 30mph (2001 Santa Fe), I felt a big jerk which I never felt it before with this car. After that I made a right turn and my car suddenly stopped and check engine light comes on. When I re-started the car, it started fine.

Suspension /check engine light /lower ball joint: dealer replace @54,353 miles, lower arm in 2004 and 8/2006 replacement is needed I have taken my 2001 Santa Fe to dealer 8 plus times for check engine light and was told found tether on gas cap not letting cap close tight enough /moved tether and ran evap test and check out ok . I was told cap loose 8 plus times this problem is on going. Return to dealer for jerk transmission issues I have to push the accelerator pedal to the floor and it takes off slow and once gets power the car jerks starts as if the gears or not switching over. Dealer said do the pressure in gas cap and gas cap not closed tight enough eval test was done. Back at dealer after road trip my car was running after begin parked with a/c running and I turn car off and car would not start thought may battery check and no water was in battery I put water in battery and let car sit for about hour and car restarted back at dealer explain this issue my battery was replace I was told factory battery wasn't strong enough was for Santa Fe this is 3rd battery with in five years.