Question about 1987 Nissan 300ZX

1 Answer

Low voltage I'm having a problem with a new alternator and battery not giving me a higher voltage reading.Want I'm reading is about 9 on my gauge

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Passionate:

    Visited the website for 10 consecutive days.

  • Expert
  • 138 Answers

Clean all connections and make sure they are sound on both the battery and alternator. Electricity does not like to flow properly through dirty and poor connections.

If your alternator is not pushing charge at over +13V(sometimes over 14V, all depends) when the engine is running, then it is faulty. Take it back to where you bought it from and exchange for another.

If the alternator is fine whilst running and the battery shows 9V when the engine is stopped, then your battery is not holding the charge and is faulty. Take it back, same as if the alternator were faulty.

By rights, all things being equal, once started, your engine should run without the battery being connected at all, if your alternator is operating correctly. Your battery is only a storage device to initiate engine ignition. They are rated by CCA, which is simply crank power to turn the engine over and start.

Posted on Mar 19, 2014

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2.2 motor. Where is the fuse link for the charging system located?


the fuse is ok as you have a reading on the gauge
the problem is in the alternator or regulator or battery
charge lights work from a positive and a negative current flow
when you turn the key on the current flows in one direction through the light to the alternator and so it lights up
when the engine is running the alternator is charging ( normally at a higher voltage than the battery and so a current is directed back through the light to the battery
these two opposing currents mean that there is no current flow through the light and so it goes out
however if the batter has failed ( 9 volts is a good indication ) then the 14.5 volts will will produce a current back through the bulb and it will again light up
I would have the battery load tested as it may have an internal fault and not accept the charge from the alternator

Sep 12, 2015 | 1999 Chevrolet S-10 Pickup

1 Answer

1978 chev k10 alternator output 14.4 on bench, reads 9 amps on truck gauge 12.2 on ampmeter at battery with truck running why


amps reading on the truck amp meter is the current that is being generated to run everything as well as charge a battery that will be at best around 80% charged.bench testing an alternator gives these readings as the regulator is feeding into fully charged batteries with no draw on the system. When batteries are 100% charged the charge rate will be as low as 2 amps but in a car where there is a current draw for the ECM , ignition , fuel pump and what ever the alternator feeds these first before it charges a battery. You used a amp meter to get a voltage reading which is reading the voltage drop across the current draw. If you had used a voltmeter (multimeter) then you would see a voltage increase with the rpm increase. The

Aug 14, 2014 | Cars & Trucks

1 Answer

I have a chevy 1995 hd2500 my voltage was low and the battery light had come on i put a new alternator on ;the truck but its still reading a low but the battery light is now out the truck has 2 batterery...


Check the belt tension for the alternator. Have load test done on the batteries as if one battery has a bad cell it will cause a charging problem

Sep 22, 2013 | Cars & Trucks

1 Answer

The volt gauge reads 14 volts when the truck is running (2004 Chevy 2500 HD, 6 Liter) after I shut it off Voltage gauge reads 9 volts as low as the gauge goes. The starter acts like it is not getting...


14 volts is close (14.5-14.8 volts is required
and 9 when shut down indicates a bad battery
have it load tested and then have the alternator tested for rectifier pack operation
there should be 14.5 volts DC at the battery when running or it is not charging the battery
if you have 14 volts AC replace the alternator with a serviceable unit

Aug 08, 2017 | 2004 Chevrolet Silverado 2500HD

1 Answer

1998 Ford Explorer Low Battery/Voltage Reading


Bad alternator you should have about 14.7 volts at idle with a new alternator.

Nov 02, 2012 | Ford Explorer Cars & Trucks

2 Answers

1999 ford explorer: Battery gauge is no longer at the halfway mark, is now fluctuating toward low What could be causing this? Thank you


could be a bad battery, or your alternator is ging out.check the voltage on battery after you charge it if it is low check your alternater and see what voltage your have there also.

Sep 17, 2010 | 1999 Ford Explorer

2 Answers

1998 k1500 5.7l 105a alternator. replaced


Now change the sulfated batery for a new one.
Vitally

Sep 09, 2009 | 1998 Chevrolet K1500

2 Answers

98 expedition battery light comes on with increase of rpm


There may be no loss of voltage, but is there a surge of voltage?

As for the battery itself when tested, it should read 12-12.5Volts across the
leads when the car is off. When the car is running, the battery should be reading 13-14Volts across the leads, anything lower means the alternator is not charging your battery, anything higher means the alternator is over charging and damaging your battery.

Another cause for the battery light could be your ECU has detected an error

Aug 20, 2009 | 1998 Ford Expedition

2 Answers

Battery test proper voltage, new alternator test normal to low voltage,have trouble starting at times. while driving amp gauge shows varying readings of 14 to 10


If you test battery with a load test it will probably fail. Battery is bad. Also have alternator tested. Go to any parts store, even walmart they all test for free. I would put my money on bad battery. Cells getting weak.

Jul 17, 2009 | GMC Safari Cars & Trucks

1 Answer

My silverado 3500 01 battery keeps going


Ck the charge rate at the battery posts. The proper range is 23.6 to 14.2v , The higher the voltage the llower the amps. Ie; at 13v Alternator is about 10% under capacity. @ 12v it is charging at max capacity. @ 15 v isthe alt is not charging but frying your battery. 9amps is ok if battery is fairly charged but at start up it should sit on 13-13.6 volts. for about 15 seconds the start climbing to less charge towards 14.2.

Jun 14, 2009 | 2004 Chevrolet Silverado 3500

Not finding what you are looking for?
Cars & Trucks Logo

88 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

76691 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

726 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...