I noticed that someone had previously came here with the same issue that I had but I did not see any response to the issue they asked about.
I drive a 2006 Pacifica and lately the engine has been causing me some grief. When I am in park, neutral, or in gear but stopped, the engine will sometimes rev up and my speedometer will jump accordingly sometimes as high as 30 mph. My first thought was that it might be a transmission issue, but I’m not a car mechanic so I don’t know much along the lines of what to check or do. The model is an automatic 3.5L