Nissan - Versa :: Roller Coaster Sound After Driving In 2nd Gear

The little window on my gear stick (the car is an automatic) is broken, and so when I shifted into Drive (D) I did not realize I actually shifted into "2" which is right below that. I drove on the highway for about 15 miles between 60-70 mph before I finally figured out that the source of the noise (basically it just sounded like the car was revving and straining up a hill the whole time. Since we just had the car worked on, I thought it was related to that). Once I realized I was in 2 I slowed down and shifted to D.

Everything seemed fine until I got off the highway. At the stoplight off the exit ramp, I went to turn right on red after coming to a full stop and nothing happened. It seemed the engine stalled, although I did not feel any shuddering or tell-tale signs that it was about to stall. The radio did not hiccup and the windshield wipers kept going without pause, but the car was essentially off, as it didn't even rev when I put my foot on the gas. I restarted it and drove home with no issues.

The next day when we took it out, we noticed a clicking sound. Not a single click, but a continuous sound, like an enhanced version of a playing card on the wheel of a bicycle. It doesn't seem to matter what rpm, what speed, the sound is present, although not necessarily consistently on. When we press the accelerator or ease off, we get a burst of the sound. Sometimes at higher speeds it is more consistent, occasionally when idly we can hear it softly in the background. No stalling occurred that day.

Tonight I drove it to work, which is a 20 minute drive on the highway. What started off as the playing card/bicycle sound soon turned into a sound that is reminiscent of a roller coaster being pulled up the first giant hill. Sort of a faster cranking sound. Then again, without preamble or warning, it stalled when I came to a stop off the exit to my workplace.

I haven't checked anything under the hood. The oil was changed almost 4000 miles ago. I don't even know what to begin checking first. I just put $ into the vehicle to fix it after an uninsured driver hit me (fender bender) and am still waiting on court proceedings from that..