The 4 wheel drive stops at 55 miles per hour thus slowing down the whole thing and when you reach below 55 it returns.
i would have to bet on the speed sensor
It can cause it to only have second and reverse gears.
faulty speed sensor in the transmission
There are several things that can cause your 2003 Dodge Ram cruise control not to work. The most common cause is a blown fuse. A malfunctioning speed sensor can also cause the problem.
If second is the only gear that does not work, there is an internal failure. The transmission will need repaired or replaced.
Yes it could.
The rear axle speed sensor is the usual cause of an inoperative speedometer.
The top speed of a Dodge Viper is 220mph.
A dodge chargers top speed is 150 mph.
Typically, a bad "speed sensor" will provide an incorrect voltage input to the vehicles computer. That, in hand, would cause a problem in the speed-o-meter reading, as well as shifting problems.
Most likely cause is a failed throttle position sensor.
The proper idle speed for a Dodge with a 318 cubic inch engine about 475 to 500 RPMs. Any idle below that will cause stalling.