99 Dodge Durango..for weeks it will start fine and then for a couple of days it will a have a dragging start like the batt. is dead..battery is new,have had the alt.checked out it;s fine ..loooking for any ideas.....this has been going on now for about 8 months

 

Check your battery cables for fraying / corrosion. Also check the starter cable connections. Possibly a bad starter motor.

Bob

 

+1 on the connections and cables.

 

+1

Cables or starter. When it doesn't want to start test across the battery posts (not battery terminals) with a multi-meter and have someone try to crank the motor. If the voltage drop just a little then it is a bad connection, if it drops like 1.5 volts or so then it is a bad starter.

Also swap the starter relay with one of the same number like the horn relay in the PDC.