Electrical problems

AL3X770

MEMBER
1995 NISSAN SKYLINE
2.5L
6 CYL
2WD
MANUAL
144,000 MILES

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.

Sunday, July 29th, 2018 AT 12:39 AM

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,885 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