95' Isuzu NPR, Battery, brake, and Va...

95' Isuzu NPR, Battery, brake, and Vacuum lights start flashing?

Posted in the Isuzu NPR Forum


Hollywood, FL

#1 Feb 12, 2011
I have a 1995 Isuzu NPR (Gas) and it starts flashing the battery, brake, and vacuum lights as i'm driving and also i hear a relay clicking non stop on the inside.. any ideas what this could be? Thanks..

Alaska Peninsula Nwr, AK

#2 Feb 6, 2014
its the alternator the vacuum pump for the brakes is on the back of it maybe loose belt of bad bering and alternator going out
Wayne D Middleton

Jacksonville, FL

#3 Feb 23, 2014
ck the crank pully coming apart

Las Vegas, NV

#4 Mar 18, 2014
My 1997 Isuzu Npr Gas Truck did the same thing.
I changed out my alternator. The lights on the dash stayed on.Had it looked at after that,. They changed out one of my relays. the one on the dash. looking at it from the driver seat its the one closest to the driver on the first row. Hope that helps some one who is looking for a fix like i was.
Now my vacuum, brake, and battery lights are off life is good.

Snellville, GA

#5 Sep 5, 2015
I had the same thing on my npr used in a Trek motor home. The fan switch would not work either. Vacuum buzzer, brake light, and alternator light came on. Changed the alternator and put in a new charge relay and all the lights on the dash went out and the heater/ac fan worked.

Houston, TX

#6 Sep 30, 2015
i have an isuzu rodeo 2000 i was driving and started to lose power then steering got to tight and hard to turn then headlights dimmed dash lights flashed and then clicking noise then died jumped 5 times got 5 miles total changed alternator and battery got all the way to work it sat for 6 hrs and went to start and would not HELP

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