It has a new battery and new alternator. It seems random, sometimes it will start just fine, other times it won't do anything but click once when I turn the key. One of the times it wouldn't start I got a glass of water and came back and it started up. Whenever this happens the radio resets. Edit: I found the issue, I recently had one of the battery post clamps because it was broken and would no longer tighten around the post. The guy at the shop didn't not install it correctly, I could pull the cable right out of the clamp. Once I tightened it down, the cable wouldn't come out and everything was golden.
Solenoid in the starter motor is failing or the motor itself is, will need replacing. can damage the battery and or the high volts cable.
SOURCE: 1999 FORD EXPEDITION intermittantly will not start.
You have a bad starter. A faulty starter will function when its cold but when it heats up, it takes more energy to get the starter to engage. Your problem is exhibiting the classic symptoms of a bad starter. I hope this solves your problem and the best of luck to you.
SOURCE: 87 f250 drained brand new battery
I would first have the alternator checked by an auto electrician to ensure it is working correctly and is providing the correct volume of current. It may be faulty and when driving you will be drawing battery power instead of power from the alternator to run the electrics. This will drain the battery.
Alternators do not last forever and if you are still running the original unit it is likely to be on it's last legs and you will need a replacement unit.
SOURCE: my ford f150 wont start, battery is good, have a
On the firewall is the starter motor relay. There are 2 large battery sized cables to it, and 1 smaller ( 16 AWG ) wire that is orange or orange with a stripe ( forget the color, want to say white or tan ).
When you turn the key to the start position, check the smaller gauge wire for +12 V. The case should be ground. If you do not get +12 on the orange wire, try starting the truck in neutral ( apply the parking brake, chock the wheel, etc normal safety precautions ). Test for +12 V at the small wire. This is the output of the DTR ( Digital Transmission Range ) sensor or in common terms the Neutral switch. The start position on the ign switch runs through the DTR to the starter motor relay coil.
If you have a stick, the DTR is replaced by the Clutch Pedal Position Switch ( clutch must be pushed in to start ).
If you have power to this ( at the times the truck won't start ) next is to check the both battery cable ends to see if they are corroded and making intermittent contact ( not probable but possible ).
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