Wow, that's not a lot to go on. My first thought is a fuel/air intake problem; clogged fuel injectors, dirty air filter. I check my fuel mileage at every refill. I also do regular maintenance. When my air filter needed replacement I got a Fram because it was cheapest. I lost power and mileage. I then bought a Percolatur with better airflow, big improvement. I also use fuel injector cleaner with every fill-up. It's only 96 cents at Wal-Mart. You may need a couple of bottles of the concentrated stuff for a few refills. Check your spark plugs and use stock champion, no cheepies, no dual-fire. Make sure they are gapped at .038 inches. (.04 was as close as I could get and it runs great) But, too little or too much and you lose power and fuel. Change your oil and filter every 3,000-4,000 miles with a synthetic blend. My manual recommends 10w-20, but I live in southern Texas where it's 90 degrees plus a lot of the time and 10w-30 gets me better mileage. These are inexpensive and easy fixes that worked for me, I wish you luck.
change the fuel filter
I have a 2003 Dodge Ram 2500 and mine is on the fuel rail
The 2003 Dodge Durango runs on regular unleaded.
The fuel pump is inside the fuel tank.
The 2003 Dodge Grand-Caravan runs on regular unleaded.
about 140.00
There is no inertia switch on a Dodge.
Dodge does not use inertia/ reset switches.
The fuel system on a 2003 is self bleeding, just start cranking the engine.
Check engine light, low power, poor fuel economy, etc.
Dodge doesn't use fuel pressure sensors on any of it's engines.
The 2003 Dodge Grand Caravan has a 20.0 gallon fuel tank.