When I turn the key on my 2003 dodge caravan, I get no sound. no click. no nothing. Yet, when I jump the starter relay switch, the engine turns over, but it acts like it isn't getting any fuel. Motor turns but car doesn't start. again, when I turn the key, I get no sound or other reaction from car. please help.

The most likely reason would be bad contacts on the starter relay or starter solenoid. You aren't getting enough amps to the starter.

https://shop.advanceautoparts.com/find/dodge-grand-caravan-starter-solenoid

Sounds to me like the ignition switch itself. If there is no click or absolutely nothing and after several key turns it will work then the ignition switch itself is going bad. I'm not positive if this vehicle has a security key. If it does try another key if have more than 1 for the vehicle or get a replacement key. The ignition switch will either need replaced or could be the switch no longer able to read the security key if it has one.

1999 Dodge Caravan wont start new battery,new starter,nothing but clicks when key is turned on continues to click when key is off could this be the relay switch checked power to starter starter is energized

This sounds like a classic bad connection either at the battery or engine ground. Check and recheck all your connections and be sure they are clean and tight.

Check the starter selenoid, check for corrosion on batt, terminals and inside the cables, tap the starter with a metalic object and try to start the car, if it starts change the starter.

Turn the crank pulley make sure the engine is not siezed

My 2003 dodge caravan would not start after driving about 1/2 hour. I stopped for coffee and when got back in to start it started I switched gears and it stalled. I tried to start again switched gears then it started but only for 2 sec. No clicking, no cranking sound just would not start but battery functions were great. Spent 2 days with a mechanic who could not resolve so sent to Dodge. After a day of putting wires back and checking out the problem they said it was the computer. Said that it was bad and could be replaced at no charge due to malfunction. Yes, it worked fine afterwards no more problems. They also said that some of the computers are found to be defective like this one so I hope this helps you in the right choice to have the dealer check it out if you are unable to get a computer reading and there is no obvious short in the system. Free sounded very good but as you know there is no such thing as really free as they got me for other things $350 worth. ouch!

This is a bad PCM. Try to disconnect the security system first and if it still does not start then it is the PCM.

ALWAYS CHECK THE GROUND ON A DODGE

resistor.............tell the mehanic