car revvs itself while in park

My car seemed to drive home fine but when I put it in park to open my garage it started revvin really fast and the check engine light came on. I could barely get it into drive and then it didnt hardly want to stop once in drive. Anybody have this issue?

codes?

I dont know how to do codes and is it safe to start up again?

Really sounds like it's unsafe to drive. You didn't give the year. You need a code reader. Most auto parts stores will read the code for you but it's not a definite "replace this" and all will be fixed. It's a diagnostic tool.

the year is a 95 plymouth neon 4cyl with approx 99000 miles on it

check for a vacuum leak

check for a vacuum leak

If he has no clue how to check codes, vacuum leak checking doubt it..

ok mechanic took it in to look at it, they came up with a code 11 and they couldnt find a vacuum leak. They claimed it could be the timing belt, but I replaced that back in 2002 and I have only put on 25,000 miles since then. So could the timing belt really be bad if it isnt that old? Thanks for any help that u can give me

I would think even if your timing belt jumped a tooth it should not have a high idle

The car seems to be working fine now so I am not sure what caused the incident or if it will come back again