Alright so the truck died like you just killed it so I change the battery and I got it to start but it was running really really rough and it was dying the minute it was about to die that will pressure with his zero it would die and come back up and I've had a lot of trouble with it I can't figure it out I've heard it had something to do with this variables time but now whenever I took off the starter and I checked it auto parts and it came back good and then I put the starter back on and I turn it over and I just get one click and then that's it I can hear is starter humming and when I turn the harmonic balancer or try to I can't it's really hard the motor was not making a knock before this I think it's something electrical because my stereo doesn't work and sometimes it does work the key unlock button didn't work until I put a new battery in and whenever I go to hit the unlock or I turn the key on the the gauges move going up and down any help would be wonderful it's a 2010 F250 Super Duty 5.4 l

 

 

 

Wow what help your reply are.I used talk to text and it didnt put the periods.I guess but thanks for telling me to check my grammar for a car problem.

 

 

There are good videos to check your alternator and battery. I'd look them up. I had mysetup checked out by an parts store and they told me everything was fine.

The next day I noticed my battery not charging well.

After doing troubleshooting and knowing the battery was new I pulled the alternator and took it down to the parts house and they tested it on their machine. It was bad . Warrantied it out.

My 5.4 was back running like a champ.

 

You are being asked to provide a good question. The quality of the answers you get will be directly related to the problem we see. In this case, the car question is not easily understood; the reason the question is not understood is directly related to the problem we see.

It takes Steven Hawking over an hour to put together one short paragraph, but he spends the time to do it so he can communicate effectively.

 

What would cause F250 to just click once when key turn to run and then the starter makes a hum. i have had starter checked its good.

 

One problem that could cause this symptom is a frozen engine. If the engine can not turn over, then the starter will click and engage the flywheel, but only hum instead of cranking the engine.

If you have a big socket, try turning the engine over using the bolt on the crank. If the engine does turn, then it is not frozen.

 

I have tryed to turn it but i cant get it to move at all.

 

What would cause the gauges on dash to go up and down with key on but not starting.

 

The dash is a voltage issue. I think you said earlier you replaced the battery. Maybe you have a bad cable. Measure battery voltage while someone turns the key and see if there is a significant drop. The starter engaging but not being able to turn a hydrolocked motor will draw enough power away from other systems to cause your dash to reset.

 

An electrical issue will not prevent you from being able to turn the engine over by hand with a breaker bar. If you cannot get the engine to turn by hand then it is locked up mechanically inside. Only way to know at this point as to why is to tear the motor down and inspect for the failure.

 

Just wondering how much torque it takes to turn over a cold engine by hand...

Have not peeked into diesel myself, but rather than a pull and teardown, I (think I) would start by pulling the valve covers and then glow plugs. Then have a look inside with a bore scope.

Same for the oil drain plug, and have a look around the bottom end.

But first... What about a frozen accessory or pulley? Remove the belt and try turning the engine again.

Also, a frozen block may be due to something broken (like a rod), or it could be hydraulically locked. Possible with coolant. Any oil in the coolant or coolant in the oil? Or do the fluids look low or overfull. Another way to hydraulically lock an engine is to drive into a river. It will suck in a big gulp of water and then not want to turn again.

Not sure of your mechanical abilities and tools, hopefully this post spurs some discussion so you can put together a plan for figuring out what is wrong.

 

His engine is gas, so pulling the spark plugs may be a good idea. I agree with everything else you said.