Can a bad voltage regulator cause a car to not start?
A bad voltage regulator may cause it to simply not work or behave erratically. You’re not likely to be able to start the car at all, but even if you could, it wouldn’t be wise to do so without knowing how fast you’re driving, how much fuel you have left, and other critical info.
Where is the voltage regulator on a car?
The location depends on the make and model of the car. It will be either inside or next to the alternator housing. Ford is one brand that mounts it next to the alternator. Those mounted adjacent to the alternator need extra support, which is provided in the form of a harness.
What should I do if my alternator wont charge?
Be careful to avoid getting caught by the alternator belt! With the engine running, there should be voltage across the terminals. Turn on the headlights to put some load on the battery, the voltage on the field coil should rise slightly. If you don’t see voltage on the field coil terminals, you might have a blown fuse.
Why does my alternator not charge on tickover?
On checking the battery voltage was low – 11.8V engine running. Battery was replaced about 1 month ago.After much investigation discovered that the alternator does not ‘kick in’ until I rev the engine to approx. 3000rpm – it then charges away happly for the rest of the journey (at around 14.5V) even on tickover. Has anyone seen this problem before?
What to do if your car voltage regulator is not working?
Recharging the battery will allow the car to start, but you’ll find that the battery will be dead again sooner than you might expect if the voltage regulator isn’t working correctly. So if the battery keeps going bad, it’s probably time to take your car to a repair shop to replace the voltage regulator.
What happens if your voltage regulator is broken?
This means if the voltage regulator is broken, the components in your electrical system might only work erratically or not at all. That’s a pretty big deal, since you definitely need your car’s lights and battery to be dependable if you want to get anywhere!
What causes an alternator to over charge a battery?
Measure voltage across the battery with your DMM. You should get 0.5 to 2 volts higher than base voltage. If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring.
Is the voltage regulator part of the PCM?
The voltage regulator works all on its own. The computer does not control it in any way. Yes the charging system goes through the pcm ,The Electronic Voltage Regulator (EVR) is not a separate component. It is actually a voltage regulating circuit located within…