ok I got a 2003 Ford Explorer if I jump it off the solenoid it starts but if I use the key it doesn't do nothing you don't even try to crank over could it be a bad starter

My guess is the ignition switch since you can start it by putting power to the solenoid. If you hook a multimeter to the solenoid postive and ground to the body of the starter and turn the ignition switch, it should read 12 volts. If it doesn't then it's either the ignition switch, neutral safety switch, or some relay.

I already tried the ignition switch all the relays fuses pretty much everything I was wondering if we could be the starter since I'm jumping it with the positive in the negative

Doubtful the starter is the problem. As ytlas asked, are you getting twelve volts to the starter when the key is turned? If not begin checking backward.

Ive got an 03 mountainer 4.6 liter, and it only starts after I cycle the ignition, or if I crank on it for a good minute... So I thought electrical and starter!!! Got to looking followed the wiring fromthe stater and right by the oil drip catch and the oil filter the relay wire was rubbing on the oil catch..... Anyway it rubbed it raw, so it's not getting the amps it needs to start, haven't fixed it yet so don't know what its going to take, but I hope this helps!!!!!!!

Jump wire to 30 to 87 will crank by doing that but now what

2003 explorer starter is good no juice to the soinoid but ran a hot wire on the starter relay 30/to87 and it cranked over now what please help

Sounds like the solenoid is bad. Have someone turn the key to the start position and see if power is being supplied to the starter.

wiggle all the relays check contacts