I have an 04 Dodge Ram 1500 Hemi. I have a high performance chip installed. For the past few months, it occasionally stalls/shuts off and locks up. The past week, it has done it 3 times. When it shuts off, it makes a loud, almost grinding, noise.

It also sputters when I drive it. Sometimes it does it so bad, it jolts me a bit.

I'll admit, I don't know much about trucks, this was my dad's and now it is mine. I get regular oil changes, I put in high performance gasoline and take good care of it.

I've taken it to two different high performance auto shops and mechanics and neither can figure out what is wrong with it. They say the computer looks good, the transmission is good, fuel injection is good, all is good.

Please let me know if you can think of anything that I can bring up to them. Thanks!

 

have you checked the coil packs? made sure the plugs are in tight?

 

Camshaft or Crankshaft Position Sensors? Google symptoms of Crank sensor, and you will get some more info. Just a possibility.


What Are the Symptoms of a Bad Camshaft Sensor?

1. As automobiles become more complex, they depend on their operational sensors, such as the camshaft sensor, to monitor rotational speeds and assist the on-board computer. When the camshaft sensor malfunctions, it can affect the vehicle's performance, from engine speed to fuel economy. The camshaft sensor is an integral part of the engine's operating system, and losing its functionality can be the tip of the iceberg for greater engine failure. Knowing the symptoms of a bad camshaft sensor can help a mechanic navigate the often complex systems of ignition and engine performance.Engine Sputtering
2. The camshaft sensor communicates the positional rotation of the camshaft to the on-board computer. When the censor malfunctions, the readouts may throw off spark timing which will impact fuel economy and cause the engine to misfire in some, if not all, cases.Poor Acceleration
3. Since the camshaft is not rotating properly because the sensor is not regulating its speed, the pistons that the sensor monitors will also be out of sync. Fuel will be delivered to the engine intermittently, resulting in poor piston function, and the car will struggle to accelerate and maintain speed. Over time this condition will worsen as more of the car's engine components are affected.Stalling/Inability to Start
4. At low speeds a bad camshaft sensor will cause the car's engine to stall. The engine may also experience an inability to turn over, resulting in the car not starting. This may not happen all the time since the car's on-board computer will use the last readouts from the camshaft sensor to operate the pistons and manage fuel flow, which will allow the car to start; however, the driver will continue to experience the other symptoms mentioned above.