Oct 20, 2017 · The alternator can drain a battery over time and shorten its lifespan, and you don’t want to unnecessarily run through batteries on account of a bad alternator. Basically, your battery gets the engine going, but once it’s on, the alternator takes over and can, in theory, continue running the car without the battery’s help.
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- You've checked all the fuse boxes? There's one next to the battery and two in the passenger compartment. Starter needs power from the battery, ground and a wire to the solenoid to make it actually start. The starter is connected directly to the battery for power.
- A bigger size alternator won't reduce the load on the battery. It's main load comes from using the starter motor, and that won't change. A bigger alternator will recharge a flat battery faster of course, but the 30 amp generator does work just fine for most old VWs.
This morning, I go to car, and it's not opening using the buttons on the key. The key itself obviously opens the door manually just fine, but the car won't start with the key in the ignition. Can you just not get another battery and try jumping it, as it does sound like the battery is dead or a main fuse gone?
- It lost power and now won't start It sounds like the battery is dead from the alternator not charging. This would account for the gradual loss of power and why the battery is dead and you have no lights. Have the battery charged and tested.
5) read how many amps your car drains when everything off. 6) Start puling circut brakers, one by one and watch for amp meter reading changes. When you pull one of the fuses your amps should drop significantly to near zero. (If your fuses are inside the car you can leave windows open ahead of time and get in thru the window.
- Fuses – Not all cars have a fuse that is connected to the starting system, but a simple check of the fuses can rule this cause out quickly. Battery – If the connections on your battery become corroded, there is no longer a connection to the rest of the car. This can keep you from starting. Clean the posts and try to start the car.
What To Do If Your Car Won't Start. 109 comments. It's a sinking feeling: You put the key in the It might be: A blown fuse for the fuel pump or ignition circuit. What to do: When a fuse fails, it's easy to spot—you'll see the car wont start lights bright new battery new starter but will start with jump why.
- Bad Alternator Sign #4: Difficulty Starting Your Car. Since the alternator is the primary source of electrical power in your car, electrical failures are signs that it is going bad. Turns out the starter may have now gone out. Could that have been blowing the voltage regulators in each of these alternators?
Oct 03, 2020 · Another common problem when the car does not start is problems with the spark. It can be caused either by a bad spark plug, a bad ignition coil, or a bad ignition cable. The wiring could also cause problems at the ignition coil or no signal from the crankshaft sensor, so you should always diagnose the crankshaft sensor first.
- This morning, I go to car, and it's not opening using the buttons on the key. The key itself obviously opens the door manually just fine, but the car won't start with the key in the ignition. Can you just not get another battery and try jumping it, as it does sound like the battery is dead or a main fuse gone?
Dec 19, 2005 · Fuse blowing In the BMW service manual the fuse #15 is for the automatic transmission control module, temperature switch, oil level sender, and alternator. It is supposed to be a 7.5 Amp fuse. It says the fuse #14 is for the ECM engine control module. I would have the components listed above tested for a short of some kind -- :dunno:
- check the alternator fuse under the passengers side fuse box. those like to blow and act like a bad alternator. that should fix the problem. its a 75 amp fuse.
Dec 29, 2014 · No fuses were blown at this stage, i got my mate to come with his jump leads, we started the car and it was fine but no heater. I then turned the engine off and started it on its on, all fine and dandy once again but no heater/blower. I get home, engine off, try start again and all is well.