Electrical problems, no crank no start on some occasions

1990 NISSAN SENTRA
130,000 MILES • 1.6L • 4 CYL • FWD • MANUAL
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OJHAWAIIAN
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Car wont start right away. The way i can tell if it wont start is when the lights on the dash is somwhat dim, and when it is the exact opposit i know i can crank it and it will run. But when its dim it act like there is no juice in the battery but i already checked voltage on battery and it looks good. Also replaced the alternator last year and it seems the output voltage is ok when running. Every so often also the radio would reset itself when brake is applied. Would it be some kind of relay iam just trowing that out or maybe ignition switch i dont know. Any help appreciated for this pain of a car is my daily driver.
Dec 15, 2013 at 2:59 AM
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SATURNTECH9
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Have you checked the at the battery when it wont start while trying to start it?
Dec 15, 2013 at 3:13 AM
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OJHAWAIIAN
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I changed all the cables with new pos and negative both and voltage of the battery is good also alternator is also checking good while running.
Dec 15, 2013 at 4:38 AM
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OJHAWAIIAN
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before i even start cranking the engine if any of the dash lights are dim and any lights that are on even the headlights and exterior lights would also be dim.i think u meant for me to check the voltage while in this scenario?
Dec 15, 2013 at 4:50 AM
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OJHAWAIIAN
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I checked the battery when its in in dim scenario and there is definetly a voltage drop .01 per few seconds.
Dec 15, 2013 at 5:00 AM
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OJHAWAIIAN
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Also when all lights are bright on the dash and exterior the car starts up fine with no problems what so ever.
Dec 15, 2013 at 5:02 AM
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OJHAWAIIAN
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I should also add that when the voltage is dropping i have the key in the on position just right before the crank position.
Dec 15, 2013 at 5:07 AM
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SATURNTECH9
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No I meant to say when it wont start check the voltage at the battery with the key in the start position?
Dec 15, 2013 at 5:52 AM
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OJHAWAIIAN
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Checked voltage at start up it looks ok
Dec 16, 2013 at 11:32 AM
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SATURNTECH9
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So when the starter is inop what is the voltage at the battery with the key in the start position?
Dec 17, 2013 at 4:57 AM
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