If it is a bad leak it will keep it fron idleing. While the engine is running you can spray some carb cleaner over the vacuum lines including intake gaskets when the engine changes sound or dies you have found the leak.
Bad water pump , problem with engine cooling fan ( if it is actually running hot and not a problem with the gauge or sending unit )
it is possible that your brake hoses are bad and soft not letting the brake fluid back out of your calipers
Maybe a bad alternator, or could need a tuneup.
Sometimes, with the vehicle running, you can remove the positive lead from the battery and the vehicle with either keep running or stop. If it stops that can mean the alternator is bad. This is not 100% accurate, depending on the type vehicle, etc.
Yes, but not at the correct flow amount that is needed to keep the engine running smoothly.
sounds like the ignition switch is bad replace it
Later model Rangers are real bad about the PCV hoses melting and causing air leaks. Check all the PCV hoses and elbows and anything else that might be in that system.
please explain how is it running bad
Yes, because a bad coil will not allow the engine to run. But if the engine is running then the coil has nothing to do with the alternator charging the battery.
With engine running at idle, spray suspected areas with carburetor cleaner. Listen for the RPMs to increase when you spray a certain area. Inspect that area looking for bad gaskets, cracked/disconnected hoses, etc.
Buy a new battery: that's a bad sign. just keep running it
At 100,000 miles or if it is running bad or missing.At 100,000 miles or if it is running bad or missing.