My 2004 chrysler pacifica won't start and I have power. so I replaced the starter and still its not starting. whats the problem?

SOURCE: Where is starter located on 2004 chrysler

Look around the "back" of the engine beside the transmission. The Starter connects to the flywheel to start the engine.
If you are replacing the starter you may want to consider doing this first;
) Have the charging system checked. Many auto parts stores and Sears will do this for free.
) Clean the battery terminal/connectors.
) Check the wiring from the battery to make sure it's good.

If you replace the starter yourself;
) Does your car have an anti-thief alarm ? If so find how to reset it if the battery is disconnected. Some alarms will shut down the car if the battery is disconnected !!
) DISCONNECT THE BATTERY.
) Disconnct the wiring to the starter.
) Remove the bolts holding the starter. Remove the harder one to reach first.
) Pull out the old starter.
) Put it the new starter.
) Bolt the new starter in. Put the easier bolt to reach first.
) Connect the wiring to the new starter.
) Re-connect the battery.
) If necessary reset the thief alarm.
) Take the old starter back for a core charge refund.

SOURCE: Check Engine Light

If the light isn't flashing, it is safe to drive. If it is flashing, then catalytic converter damage can result. Have a parts store check the codes for you and come back and post the code.

SOURCE: 2004 chrysler pacifica

It is for an oil change mainly and any other service your maintenance manual suggests at the mileage interval. It needs to be reset after each oil change to be accurate.

SOURCE: 2004 chrysler pacifica check engine light code

The codes are both evap system codes. The only good way to find the leaks is to take it to a shop that has a smoke machine. They will pump smoke into the evap system to find the leak.

SOURCE: serpentine belt routing for 2004 chrysler pacifica

here it is