Tampilkan postingan dengan label Jump start a car. Tampilkan semua postingan
Tampilkan postingan dengan label Jump start a car. Tampilkan semua postingan

Jumat, 08 Juli 2011

Tricks for a failed starter

If you own an older vehicle you will eventually have a starter fail, usually when you really need to go somewhere. I have had starters fail on several vehicles and have still been able to drive them to the auto parts store to get a new one.  There are really 4 ways of starting a vehicle that has a bad starter but each method is applicable in specific circumstances. These methods are not guaranteed to succeed, and if they do you are on borrowed time so get a new starter as soon as possible.

1. The Hammer
This method can work of the starter solenoid is sticking. You can tell this if when you turn the key you hear a click but nothing else (no normal starting noise) , but have a good battery. Go get your self a stick, hammer, tire iron, large screwdriver, or any other long object that you can whack the starter with. Don't hit it as hard as you can as this my break your starter, but start off fairly light, it shouldn't leave a mark on the old starter, then try to start it. If it doesn't work give it another slightly harder whack and repeat. If after a few tries it still doesn't start you will need to replace the starter.

2. Jiggle the car
This method can work if you have a worn gear on the starter. You can tell this if when you try to start the car you hear a high speed motor spinning. It sounds similar, but quieter, to a vacuum cleaner. This noise is the starter motor not catching the gear on the outer edge of the flywheel on the engine. Put the car in gear and try to move it back and forth a couple of times. This may move the gear on the flywheel enough so that the starter can grab it now and start the car.

3. Hot wire it
This method can work if your solenoid has completely failed, you don't even hear the click mentioned in number 1, or you have bad wiring going to the solenoid or starter. It is easiest on vehicles that have the solenoid separate from the starter but might be possible on vehicles with the starter and solenoid all in one. Here you will need to turn the key to the run position and then create a short across the terminals of the solenoid. If you have an external solenoid this is easier as you can see what needs to be shorted, it will be the terminals with the really big wires connected. I suggest using a large plastic handled screwdriver for this as they can carry the very large current and you won't electrocute yourself.

4. Pop start it
If none of the above methods work and you have a vehicle with a manual transmission this will work, provided you can get the car rolling fast enough. Again first you will turn the key to the run position. Then put the vehicle in neutral.  Next you will either need to get out and push the vehicle, or let it roll down a hill. When the vehicle is going near 5 mph get back in, close the door, put it in gear and let the clutch out and be ready to give it some gas. If it doesn't start you will have to try again, I suggest getting it going faster. The only time this hasn't worked for me on a manual transmission vehicle when when I had to push it up a hill.

These tricks may not work every time but I have used all of them in the past with success. When you do finally get your vehicle running remember you are on borrowed time and need to replace your starter, so I suggest driving to the auto parts store leaving your vehicle running and getting a new starter as you may not be able to start it once turned off. If none of these are an option then you will be stuck either paying for a tow or borrowing a vehicle to get a new starter.

Senin, 23 Mei 2011

Charging a battery or jumpstarting a car

One thing that I do frequently is end up charging a car battery or jump starting someone's car. Frequently this is because someone let a vehicle sit for a long time (probably a month or more), or they left the lights on. Every once and a while it is because of an actual failed battery. I also charge up my wife's car every few weeks since she only drives about 2 miles a day so her battery never gets fully charged unless I do it and I charge the car battery when changing oil. When it comes to charging a vehicle's batter there are right and wrong ways of doing it which I will discuss below. As a side note if you have a limited use vehicle I highly suggest getting one of those solar trickle chargers that sell for about $20 just plug it into the 12V outlet (cigarette lighter) and put in on the dash. I use one in my Bronco II and that thing will sit for a month consistently and still starts without issue.

Jump starting a car:
I suggest carrying around a good set of jumper cables. Good ones have real heavy clamps and are at least 6 gauge wire 4 gauge wire is better (lower gauge is thicker wire).
  1. Move the running vehicle so that it's battery is as close to dead battery in the other vehicle as possible
  2. Leave the vehicle with the good battery running
  3. Make sure all accessories (lights, radio, etc.) are off in the vehicle with the dead battery
  4. connect the red cable to the red (+) terminal on the vehicle with the dead battery
  5. Connect the other end of the red cable to the red (+) terminal on the running vehicle
  6. Connect the black cable to the black (-) terminal on the vehicle with the dead battery
  7. Connect the other end of the black cable to the black (-) terminal on the running vehicle
  8. Do not attempt to start the vehicle with the dead battery yet, it probably won't start and if you do try it will only take longer.
  9. Go sit in the running vehicle for a few minutes. I suggest bringing the engine up to a faster idle (1500 RPM) so it will charge the dead battery faster. To do this just lightly press on the gas pedal, you will hear the engine speed up some
  10. After 5 or so minutes have someone else go and try to start the vehicle with the dead batter. Keep the running vehicle at the faster idle.
  11. If the vehicle with the dead battery started continue to step15
  12. If the vehicle with the dead battery turned over (tried to start) but didn't start go to step 9
  13. If the vehicle with the dead battery didn't turn over go to step 9 but let it charge for 10 minutes
  14. If you get here and have tried starting the other vehicle and it won't start the battery is probably totally dead so go get a new one, or the starter is the problem and go get a new one. Continue to step 15 and disconnect the jumper cables.
  15. Disconnect the black cable from the car that has been running the whole time
  16. Disconnect the black cable from the car that got the jump
  17. Disconnect the red cable from the car that has been running the whole time
  18. Disconnect the red cable from the car that got the jump
  19. If the car that got the jump is now running have them take it for a drive for at least 30 minutes to get the battery charged back up. Highway driving is better as that is at a constant speed and will charge the battery quicker and will put less of a load on the battery. You can end now
  20. If the char that got the jump isn't running check the battery and starter. (This will be discussed in another post later)
Using a battery charger (also applies to connecting battery boosters)
  1. Do NOT have the battery charger plugged into the wall
  2. Connect the red cable to the red terminal (+) on the battery
  3. Connect the black cable to the black terminal (-) on the battery
  4. Plug in the battery charger
  5. Select the type of charging. Some chargers don't give you an option, these are trickle chargers. The various options are below
    1. Trickle charge (1-2 amps)  This is the best way to charge a char battery, use it if getting the vehicle started can wait several hours (overnight)
    2. Quick charge (5-20 amps) This is used to quickly charge a battery, expect to let it charge for several minutes (10-30 depending on battery size and output of charger)
    3. Start (50-200 amps) This is used to start a vehicle. You should still let charger charge the battery for a few minutes (5 is probably plenty). This is really hard on batteries
  6. Let the vehicle charge
  7. Unplug your charger
  8. Disconnect the black cable from your battery
  9. Disconnect the red cable from your battery
When I charge a battery when changing oil I use the trickle charge setting on my charger. My charger is a 2/10/50 amp charger. I also use the trickle (2 amp) setting when charging my wife's car overnight.