If you have run this vehicle within the proper design parameters, you may simply need a diesel fuel system cleaner.
If you have run red diesel, you will definitely need fuel system cleaner.
If you have turned up the engine, it could be injector pump wear.
If this engine has high miles, it probably needs a valve adjustment.
My bet lies with the fuel system. Try "Power Service" Diesel fuel supplement.
If it is not diesel, you probably have a fouled or disconnected plug.
change the fuel filter
The bushing on the track bar. http://lukeslink.com/ this link has the fix.
Most likely cause would be a failed U-joint.
The most common place to buy a Dodge 3500 Diesel would be through eBay. Although, there are many other websites that allow you to purchase a Dodge 3500 Diesel, such as the cartrucktrader.
A 2003 Dodge diesel manual transmission will work in 1990 Dodge diesel manual and bolt to the 1990's transfer case with little fabrication.
Crank sensor failure. It is located on the front of the engine, points down to the crank pulley.
who ever said that a dodge ram diesel does not have a servo it is not true. I have a dodge diesel 2001 and it has a servo and the answer to this question is it had a vacuum leak in the servo vacuum line, changed that and cruise control worked great. the servo is under the drivers side battery.
check the power steering rack or the steering pump
The turbocharger turbine housing and exhaust manifold on any state of the art high horsepower (per litre of displacement) diesel engine will glow red as it approaches full load condition.
Could be a valve problem in trans, or could be a sesnor malfunction in the trans. Have it looked at by a professional, it will save you a headache.
The only engine used in a Dodge vehicle that does not have a timing chain or belt would be the Cummins diesel. The Cummins diesel uses timing gears.