Dodge Truck makes loud knocking rattling noise when started but cuts off right away.

If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

There are many possibilities for such loud rattling problems.
Engine noises don't leave fault codes unless the knock is so bad the engine is misfiring. When you say it "cuts off right away" do you mean the engine stalls or the knock goes away? If the answer is the knock goes away right away then you have a crank or rod bearing that is loose from wear, the oil pressure fills the excess bearing clearance gap and the knock stops.
Also another possibility is you've damaged your crank or connecting rod bearings. The temperature sensor is out and that should have triggered the check engine light. The other possibility is the water pump has gone out and is causing the noise you hear and your stalling.
This details will help.

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