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Electrical problems, no crank no start on some occasions

Tiny
OJHAWAIIAN
  • MEMBER
  • 1990 NISSAN SENTRA
  • 1.6L
  • 4 CYL
  • FWD
  • MANUAL
  • 130,000 MILES
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.
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Sunday, December 15th, 2013 AT 10:59 AM

9 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Have you checked the at the battery when it wont start while trying to start it?
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Sunday, December 15th, 2013 AT 11:13 AM
Tiny
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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.
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Sunday, December 15th, 2013 AT 12:38 PM
Tiny
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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?
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Sunday, December 15th, 2013 AT 12:50 PM
Tiny
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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.
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Sunday, December 15th, 2013 AT 1:00 PM
Tiny
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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.
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Sunday, December 15th, 2013 AT 1:02 PM
Tiny
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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.
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Sunday, December 15th, 2013 AT 1:07 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
No I meant to say when it wont start check the voltage at the battery with the key in the start position?
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Sunday, December 15th, 2013 AT 1:52 PM
Tiny
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Checked voltage at start up it looks ok
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Monday, December 16th, 2013 AT 7:32 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So when the starter is inop what is the voltage at the battery with the key in the start position?
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Tuesday, December 17th, 2013 AT 12:57 PM

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