Can a bad battery cause poor idling?
Can a bad battery cause poor idling?
When the battery is low enough, the engine will barely idle and it can even stall. Have the battery load tested. The alternator depends on the battery to put out power so if the battery is dead or near dead, the alternator will be dead or near dead too.
Why does my car have a rough idle after replacing the alternator?
To check this, at night in a dark area, spray glass cleaner on the wires while the engine is running. If there is a damaged wire, you would see arching. If the alternator does not spin freely before you install the serpentine belt it could create drag and slow down the engine’s RPM.
What causes an alternator to output low volts?
If the voltage at the battery and alternator don’t match. For example the battery reads 12v and alternator reads 14v. This means that there is an issue with wiring. While applying the same conditions as above.
What to do if your alternator has bad ground?
Place the red lead on the positive battery terminal (if possible dig it into the battery post, not the terminal). Place the black lead on the bad post of the alternator. Same thing as above, if the voltage is above 0.5v then examine the positive cabling for problems.
Can a car battery be charged while idling?
Yes, your car battery will charge while it is idling and this is possible because of the alternator in the battery itself. The alternator will charge the car’s battery by providing it with electricity.
What to do if your alternator has low voltage?
Put the black multimeter probe on the negative battery terminal (if possible dig it into the battery post, not the terminal). Put the red probe on the alternator case. Your looking for the voltage to be below about 0.5v. If the voltage is higher than that examine all the negative cabling for problems. Preform the same test with the positive side.
How can I tell if my alternator is bad?
If the voltage is higher than that examine all the negative cabling for problems. Preform the same test with the positive side. Place the red lead on the positive battery terminal (if possible dig it into the battery post, not the terminal). Place the black lead on the bad post of the alternator.
Yes, your car battery will charge while it is idling and this is possible because of the alternator in the battery itself. The alternator will charge the car’s battery by providing it with electricity.
Where do you put the red lead on an alternator?
Place the red lead on the positive battery terminal (if possible dig it into the battery post, not the terminal). Place the black lead on the bad post of the alternator. Same thing as above, if the voltage is above 0.5v then examine the positive cabling for problems. Highly active question. Earn 10 reputation in order to answer this question.
