Dodge diesel transmissions, although built well, can have the same problems as any other engine. The Cummins engine found in Dodge diesel pickup trucks, such as the Dodge Ram, exhibit more than their fair share of problems. Knowing what to look for when your car starts shaking can save you money at the repair shop.
A common problem on a Dodge diesel with a manual transmission is that the shifting mechanism inside the cabin can come loose. To repair this, remove the panel that shows the shifting pattern by gently prying it up with a small screwdriver. Once inside the shifting box, loosen the lug nut that holds the shifting nob in place, then screw the knob down until it is tight. When the shifting knob is secure, place the shifting pattern back into place. If it will not sit flush, use a rubber mallet to knock it into place.
Transmissions in Dodge diesel trucks are tough. However, if you have the Cummins engine model, such as in the Dodge pickup range, the torque of the engine, the moment of force, can cause undue wear. To keep the engine from ruining the transmission, do not exceed the recommended towing weight specified in your Dodge manual. Change the transmission fluid and the filter every 10,000 miles if you are carrying heavy loads. Tighten the bands that go to the rear-wheel drive on a regular basis.
Transmissions can create shuddering of the vehicle's body as well as loud clunks when shifting gears. If you hear these issues, check the transmission fluid level. If it is not filled, do so to the recommended amount. If the transmission fluid is at an acceptable level, check that all bolts are securely in place. Tighten them if necessary, then check for further rattling. If the car still shakes, make sure all the belts to and from the transmission are tight without any visible wear. The belts should be changed according to the maintenance schedule in your owner's manual.
