[poehitman]

Ok, here's the deal. I keep having this problem with my Bird that I can't seem to figure out, but I think I might have it pinned down. At different points between 30 and 60mph, I get a heavy vibration that lasts between 2 and 4 seconds. The best way I heard it described is that it feels like you're driving over railroad tracks. Also, when my car is idiling, or I'm backing up, the car vibrates heavily and feels like it will stall, but it never does. It does all this whether the OD is on or off.

I think it could be something called the Manual Lever Position Sensor, but no auto parts store seems to know of this part. My car is a 1995 Thunderbird LX with the 3.8L V6 engine and the Auto Trans. Any help is appreciated.