Question about 1990 Nissan 300ZX

1 Answer

Hi. after removing the theft fuse,the battery does not lose the charge.with a multimeter I can see the improvement .what is causing the draw from the battery?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 33 Answers

Poss bad relay, might be stuck on

Posted on Aug 26, 2010


1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Charge overnight and the charge runs out without ever being used??

If the battery is good
You have a parisitic draw somewhere:

Switch your Digital Multimeter to DC AMPs. Amps is usually indicated by an "A" on the Multimeter Switch. AC is usually shown as a "~" symbol and DC shown as a "-" symbol. You usually have to move the Multimeter positive lead to a separate socket on the Multimeter. Sometimes there are 2 sockets, a high range and a low range. Always test on the highest setting first. For example: high setting on your multimeter may be 10 Amp. Test on the 10 Amp setting first, then if the current drawn is less than your Multimeter Low setting, move to that setting and keep testing. In my example my Multimeter low setting is 0.3 Amps. Also indicated as 300mA (mA x 1000 = A).

WARNING! Once the multimeter is on Amps do not connect it directly across the battery and do not hit the starter button while testing for current Amps. This will cause the internal fuse in the multimeter to blow! A multimeter set on current is a very low resistance, almost a short circuit and will draw as much current as your battery will supply till something melts. Always plug the Multimeter leads back to volts when you have finished testing to avoid blowing the fuse next time you use your multimeter.

Voltage ReadingTo test for battery drain: Switch everything off on the car. Disconnect just one battery lead. For example disconnect the Positive Battery Lead. Set your Multimeter to Amps as described above. Connect the Positive Multimeter Lead to the Battery Positive terminal. Make sure the Positive Lead you removed from the battery does not touch anything grounded, like the car frame etc…. Connect the Negative Lead from the Multimeter to the Positive Lead you removed from the Battery. You should now see current drain measured in Amps. Move to the lower Amp setting on your multimeter if the current is lower than the setting on the Multimeter Low setting. Start to unplug the wires or fuses around your car and see if the current reading goes to zero. This will point you in the direction of the current thief. You can convert to Power measured in Watts by multiplying it by the Battery Voltage. Power = Volts x Amps 4.2Watts or (12Volts x 0.35Amps).

Mar 24, 2017 | Cars & Trucks

1 Answer

1996 infinity q45 keeps losing charge but battery/alternator/passes check test

You probably have something draining the battery, such as a glove box or trunk light that is not turning off, or something else that is drawing current.

To test for a current draw, you can install a test light or current meter in series with the positive battery cable then remove fuses one at a time to see which circuit causes the current draw to decrease noticeably.

Nov 21, 2016 | Infiniti Q45 Cars & Trucks

3 Answers

95 f 150 battery power drains with everything turned off what's wrong?

You have a parasitic draw on the electrical system causing the drain. You will need a amp meter hooked in series with the battery that detects amp/milliamp draw to see how much current is being drawn with the vehicle shut off and diagnose from there. Usually involves pulling fuses one at a time and watching the meter to see what fuse lowers/eliminates the draw and then finding out what the fuse controls to isolate the source of the draw

Jul 25, 2015 | Cars & Trucks

1 Answer

The car battery is losing it's charge when vehicle is not running

You have what is called a parasitic draw on the electrical system , battery . Could be a control module not powering down when it's should . a electrical componet is staying on . , light in glove box , something you can't see . Bad diode in the alternator could cause this . But this just gussing , testing is the way to a fix . Watch thesed videos on testing for a draw on the system . Improved Methods to Find Parasitic Draw Battery Drains Overnight

The Trainer 27 3 Ways Of Finding The Cause Of Key Off Battery Drain...

Mar 31, 2017 | 2002 Saturn SC

1 Answer


it could, if the battery is losing charge, the alarm system will detect the draw

Aug 19, 2011 | 2000 Ford Explorer

1 Answer

2003 Chrysler 300M that suddenly drains the battery in a matter of hours. I have replaced the battery 4 times in the past 2 years

You obviously need to have charging system tested, as well as an amp draw test when engine is off. Check, clean and tighten all connections, and don't forget any extra ground straps from engine to body, frame to engine etc.
If all checks out good, and you don't want to pay someone to test for current draw when engine off, you can do it yourself with a 12volt DC test light ( about $5 ) if your willing to spend the time. Make sure if your stereo has anti-theft code, that you have it ready for after to reprogram radio/stereo.
Now remove positive terminal connection on battery. Your vehicle may/should have a connection under hood on passenger side, if battery is located in front of passenger front wheel. The cable going down to battery is the one you need to disconnect carefully so as not to touch against metal on body. If easier to get connection off at battery, do so. What needs to happen is that you need to connect the test light between battery connection, and battery. One end to battery and other to main cable that connects to battery. When there is a current draw, the test light will be illuminated. The brighter the light, the bigger the draw. Now you need to watch test light, or have someone watch it for you and start pulling fuses. If you pull a fuse and light doesn't change, put it back in. If light changes (dims) then you've found a circuit causing a draw. Big change in light, or light goes out, bigger draw, and likely source of problem. Keep in mind that radio/stereo has small draw due to memory storage. What I usually do is pull it and leave it out while testing. You probably have a fuse/relay box under hood on drivers side, so start there. I usually pull door locks, power windows, anti-theft, stereo amp, power trunk etc first, as they can stick and cause a good draw, as well as any fuses for 12 volt power center, such as sockets to plug in cell phones etc. Then go to fuse panel inside if not found. Once light goes out, or gets very dim, you've isolated the circuit causing the problem and can correct from there. . Good Luck

Apr 07, 2011 | 2008 Chrysler 300

3 Answers

Something pulling battery down on 1990 olds 98

You may need to test for a parasitic power drain, for example a horn switch that is stuck closed causing the horn relay switch to stay on continuously even if the wire was unplugged from the horn.

You will need multimeter to test for a parasitic power drain.

1. With the key off, disconnect the negative battery cable.
2. Connect the black multimeter test lead to the negative battery post, connect the red test lead to the negative battery cable.
3. With the meter set to the DC milli-amps scale note the current draw displayed. If it is over 20 mA, there is likely something drawing power that shouldn't be.
4. Leaving the meter connected have an assistant pull fuses one at a time (replacing them before pulling the next) until the meter reading drops. The circuit that this fuse powers is where the problem most likely is.

Mar 21, 2011 | 1990 Oldsmobile Ninety Eight

3 Answers

New battery keeps losing power...

There seems that the current is leaking frm somewhere.
Firstly put off all equipment and ignation.
Keep a multimeter in hand.
Remove all the fuses frm the fuse box.
one by one touch the pin of the multimeter(RED) to one end of fuse solket and the other (Black) pin to the other soket where the fuse sits.
There should be NO reading... keep going from one fuse point to another.... the point wher the multimeter reads while all switches OFF means from tat equiptment the current is leaking... Now check That fuse is for which equiptment e.g. for AC or for blinkers or for headlights etc etc.
Get thet unit checked / repaired / changed as the case may be.


Jul 13, 2010 | 1996 Ford Explorer

1 Answer

2002 pathfinder killing the battery for no reason. Sometimes overnight others it takes a couple days. Replaced batt. and alt. but problem still exsists. Ive already checked each circut by pulling fuses for...

to check for a parasitic battery drain, you will need a multimeter. set it on the 300 mA setting then remove the negative battery cable on the vehicle. put the multimeter's negative lead on the battery post and the positive lead on the vehicle's negative cable. the meter will tell you how many amps are being drawn. usually, there's a temporary spike (a second or two) for the vehicle's security system, relays, etc. after that, you should only see a draw of approximately 30-40 mA, which is the digital clock, memory settings on the radio, etc. if you're seeing a larger draw, you can begin removing main fuses in the fuse box under the hood to see where the draw is coming from. it's also possible that you may have a bad diode in the alternator, which would cause the alternator to draw current away from the battery when the engine is not running.

Jan 28, 2010 | 1995 Nissan Pathfinder

1 Answer

Won't keep a charge had it diaggnosed its not the battery or the alenator

You have a current draw problem(something is permanently on) Remove the possitive battery terminal and connect a multimeter(set to 20 Volt DC)between the wire and the positive pole on the battery, Should not be more than 0,09 Volts. If so, remove each fuse one by one untill voltage drops to 0,02 check the description on fuse box to identify the circuit, Make sure everything is turned off when performing the above.


Oct 16, 2009 | 1998 Lincoln Mark VIII

Not finding what you are looking for?
1990 Nissan 300ZX Logo

Related Topics:

66 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts


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