How much does it cost to replace an alternator Toyota Corolla?
Toyota Corolla Alternator Replacement Cost Estimate. The average cost for a Toyota Corolla alternator replacement is between $408 and $452. Labor costs are estimated between $67 and $85 while parts are priced between $340 and $367.
How long does it take for a new alternator to charge a battery?
Basically, at idle you can probably get 80 amps out of your alternator. You can charge a flat battery to 80 percent full in about 2 hours, so long as you alternator can manage produce around 14 volts at the battery terminals this whole time.
Why is my battery light on after changing battery and alternator?
Similarly, there are two things that generally cause a battery warning after an alternator replacement. The most common is, again, a loose connection either with the control plug (aka “relay” plug-in), charging line connection, or the ground.
What happens if you have a bad alternator in a Toyota Corolla?
As described above, a bad alternator will drain your Corolla’s battery fast. When the battery gets so dead it will no longer be able to power your Corolla’s ignition system. As the ignition system is no longer able to produce a full powered spark, the engine will begin to sputter and stall.
What should the charge voltage be on an alternator?
Turn on the high beams for 10 seconds and then turn them off. Measure battery voltage across the battery posts with your DMM. You should get between 12.4 and 12.6V. This means your battery is fully charged. If you get a reading below 12.4V, charge the battery before continuing. 5b. Measure the Charging System’s No-Load Voltage
Why is the battery light dim on my Toyota Corolla?
Car is a 2007 Corolla with about 140K miles. Clean all your grounds. I assume NTB cleaned up the battery clamps before they installed the new battery? It is possible the wiring to the alternator is bad. Have you ever had your serpentine belt tensioner replaced? The battery light is driven by the regulator inside the alternator.
What are the symptoms of a bad alternator?
Outside of the battery warning light, a dead battery is the most common symptom of a bad alternator. As the alternator can no longer supply your Corolla with an adequate power supply, it will begin to feed off of the reserve in the battery.