My car was in need of a new Crank Position Sensor, so it kept dying in traffic and whatnot. I took it to Chrysler because I have a powertrain warranty. The part wasn't covered, so I bought it and replaced it myself. While I was there, they told me I had a leaky trans seal that they replaced under warranty.

Now, my car does this thing when I'm driving 70-95 mph and I floor it, it will lock at 5100 rpm and some speed in that range. I'm not sure if its just not shifting up or what. I've taken it back to Chrysler to check everything they did, and they replaced the trans seal again making sure to do it correctly and told me they didn't see anything wrong. I'm still having this problem.

I can get past this speed range by accelerating slower, but this is still a problem. I've gotten a transmission service (fluid, filter, gasket), a new Relay Control Module, a new Crank Position Sensor, new spark plugs, and new spark plug wires. Still does this! Any advise would be appreciated. Thanks!

Btw, its an SRT6 coupe