Use a digital multimeter across battery posts. Have helper turn key to crank, how low does the voltage drop? Generic specs say it shouldn't drop below 9 volts. Battery connections all clean and tight?
Also, you may need to have the starter tested. Some of the national brand autostores will test it for you.
Please consider a to help us answer more questions.
Friday, December 28th, 2012 AT 4:01 PM