This is part two of a previous post/request for help- as I do my internet research, I'm realizing that many of the problems that I've been ignoring (due to financial hardship) could all be related. so here goes, I purchased this car (2003 Jeep Liberty Lmtd. V6) the check engine light has been on for 4 years now- none of the mechanics I've brought it to have been able to figure out why. ( hoses changed and nothing) I have not had a smoke test done.$$$ I started having start-up issues. The radio and all the lights come on but the car won't start (rule out battery), eventually after a few tries, it starts up. I've also noticed, when in reverse, sometimes it stalls, a few times it has shut off on me while trying to park in reverse gear, sometimes when driving it kicks as if it is having trouble shifting into gear (it's automatic)- and finally, the hissing and revving sound when pressing the gas pedal, it shifts into neutral and gets stuck there- I have to shut it off and start it again.