Question about 2003 Ford F150 Regular Cab
Not sure what "power everywhere" means. Have you tried turning pressing and holding the brake, turn the key to release the gear lever ( do not start ) and place truck in neutral and start in that position ? ( making the assumption the truck is an automatic trans )
This is testing to see if there is a problem with the DTR ( Digital Transmission Range ) Sensor.
The Starter Motor Relay is on the firewall, 2 large cables to it, with a smaller AWG wire ( looks to be 16 AWG ) that is Tan w/ Red Stripe. The Tan w/ Red stripe wire is from the DTR, which only has 2 positions to allow the truck to start ( Park
Posted on Jul 20, 2010
I don't know what to tell you, if you don't know what it looks like and I try to tell you what to do, and you jump the wrong wire's, could and will cause major damage to your elec. system, best to take it in for repair, or could cost you more in the long run, just trying to be helpful and save you money at the same time.
Posted on Jul 08, 2010
Having power is not enough, because you also need the return path of the engine ground strap, since the engine is insulated on rubber mounts.
It could also be the neutral safety switch. Which is why people suggest jumping the solenoid. It is easy. Most solenoids are a small cylinder on top of the larger cylinder that is the starter field. But Fords generally tend to have their starter solenoid off the starter. That is because most cars use the solenoid to also push out the bendix gear as well as connecting current to the starter field coil. Ford usually uses centrifugal force to throw out the bendix gear. But the starter solenoid is easy to find. Just follow the battery positive terminal, and it will be held to the solenoid secondary by a larger nut. Another large secondary wire will then go to the starter field. There should also be 2 smaller primary wires to the solenoid. Basically there are 2 ways to jump it. The first is to put power to the primary. To do that you need to determine which of the primary wires is input and which is output to ground. You don't want to jump power to the ground. Use a test light to tell which is ground, and use the other. When you jump the primary from the battery positive, the solenoid should click, and you should see power at the secondary, with a test light.
If you do, and the starter does not spin, then it is the starter that is bad. If you do not hear a click, then it is probably the solenoid that is bad. You can then tell by jumping the secondary. This should cause the starter to spin (while also making some good sparks, so jump it with something you don't care about much.)
Separate solenoid, with only 1 primary, using chassis ground:
Solenoid integral to starter:
Posted on Jul 10, 2010
Check your ignition coil for rust or cracks could be shorting out especially when it rains or have alot of moisture.
Posted on Jul 10, 2010
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Posted on Jan 02, 2017
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