Rick's Free Auto Repair Advice

Posts Tagged: test battery

Test your alternator

How to test an alternator If your car wont start because the battery is dead, you’ll need to test the battery and test your alternator. I’ll show you how to perform the tests, but first pay attention to this WARNING! NEVER test an alternator by disconnecting the battery cables while the is engine is running. That was a valid test back in the days when cars didn’t have any solid state electronics, but it’s not valid anymore and can cause substantial damage to expensive computers and modules. How to find … Read More

Find battery drain on Ford Vehicles

Battery drain on Ford Finding the source of a battery drain can be frustrating. Here’s a test to use with a Ford vehicle. If you’ve suffered a dead battery and both the battery and charging systems check out, it’s time to perform a parasitic drain test. The test involves hooking an ammeter in series with the negative battery cable to measure the amperage draw. Professional technicians use a clamp on ammeter. Here’s what you’re looking for: Most computers have a keep alive mode that keeps drawing current for about 15 … Read More

Dead car battery

What causes a dead car battery? If you have a dead car battery first thing every morning, you might have a parasitic battery drain and you should conduct a car battery drain test. See this post for more information on how to test for a battery drain. Or, you may have a charging system problem. Start by checking your charging system and ruling out a battery drain issue. Start by testing the car charging system Use a digital battery tester to check the condition of the car battery and the … Read More

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