Electrical problems

1995 NISSAN SKYLINE
144,000 MILES • 2.5L • 6 CYL • 2WD • MANUAL
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AL3X770
  • MEMBER
  • 1 POST
Hi, my can wants to stall and voltage drop whenever I turn on headlight and shuts off completely when I press the brake pads. When headlight is turned on alternator is charging at 13.90 volts and battery is new.
Jul 29, 2018 at 12:39 AM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
HI and thanks for using 2CarPros.com.

The voltage you mentioned sounds right on target, so I do not think the problem is electrical or at least not the alternator.

What I think may be happening is the brake booster is bad and when you apply the brakes, it drops the engine vacuum causing the engine to stall.

I first want to check if there is a vacuum leak issue. Here is a link which describes how to check engine vacuum. Do this and let me know what you find.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know if you have other questions or need help.

Take care,
Joe

Jul 30, 2018 at 6:15 PM
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