Question about Chevrolet Blazer

1 Answer

WHAT IS THE DIFFERENCE IN CONNECTING THE NEGATIVE OR POSITIVE BATTERY TERMINAL WHEN TESTING ELECTRICAL COMPONENTS OR JUST CLEARING THE COMPUTER DOES IT REALLY MATTER WHICH ONE U DISCONNECT?

Posted by on

  • 4x4chick May 05, 2010

    THANKS UR AWESOME THAT IS GOOD TO KNOW.

  • 4x4chick May 05, 2010

    IT WAS VERY HELPFUL THANK YOU VERY MUCH......

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,016 Answers

Hi,

No it dosn't matter, it's just recommended to disconnect the negative terminal first because of the fact that it will not cause a short circut if you were to touch any metal part of the vehicle when loosening the terminal.

That way you won't cause damage to your ECM or to yourself.

Hope this helped.

Thanks

Jason

Posted on May 05, 2010

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Replace starter


Starter Replacement
Removal Procedure
Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    alt="Object Number: 217186 Size: SH">
  3. alt="Click here for detailed picture of above image.">
  4. Remove the positive battery cable starter motor lead nut (1) from the starter.
  5. Remove the positive battery cable lead from the starter.
  6. Remove the starter solenoid terminal lead nut (2) from the starter.
  7. Remove the starter solenoid terminal lead from the starter.
    alt="Object Number: 217190 Size: SH">
  8. alt="Click here for detailed picture of above image.">
  9. Remove the starter motor bolts (2, 3).
  10. Remove the starter motor (1).

Sep 23, 2015 | 2000 Cadillac Catera

1 Answer

On the starter For a Hyundai accent which terminal should I connect the red battery cable


Good question, because connecting it the wrong way can damage the starter, the battery, or both! The red cable connector clamps to the positive terminal, and the black cable clamps to the negative terminal. On a new battery, it is often easy to tell which is positive by their markings (+) = positive and (-) is negative. In reality, the markings may be difficult to see. The red or positive post is larger in diameter. The black or negative post is a ground so you can follow it from the post to somewhere solid on the metal frame of the car.

Note the cross on the top of the battery post.

According to In.answers.yahoo.com :

"...the battery case will have a + near the positive or a - near the negative terminal. If these don't exist then the positive post will have a larger diameter post than the ground post, this is if the battery is a top post.



If it's a side terminal battery which GM cars used for a while it should be marked on the top of the battery or on the front with its respective sign. Otherwise you can look at the cable that's connected to it which are usually color coded. Red is positive and black is negative."

Apr 03, 2015 | Hyundai Accent Cars & Trucks

1 Answer

Alternator over charging


The alternator is vital part of your car or truck's electrical system. When the vehicle is running, the alternator provides a constant charge to the battery, as well as to other accessories. Without the alternator, the battery will eventually discharge. However, if the alternator isn't working correctly, it may send too great of a charge to the battery, which is known as overcharging. This condition is dangerous to your car's battery and electrical system. You can test to see if the alternator is overcharging, using a simple voltmeter. Start your vehicle and open the hood. Be aware of the moving parts within the engine compartment, as you do not want to get your hands or tools anywhere near them.

  • 2 Locate the vehicle's battery. It may be obscured by protective shields, the air filtration or intake system or a fuse box. Whatever the case, you need to remove everything that covers the battery. You must have access to both the negative and positive terminals of the battery.
  • 3 Turn the digital voltmeter on and adjust it to the proper settings, if necessary. The voltmeter must be set to "DC" and 12 volts.
  • 4 Connect the clamps or leads of the voltmeter to the battery. You must connect positive to positive and negative to negative. The positive lead is usually red or yellow, while the positive terminal on the battery will be marked with a plus sign. The negative lead on your voltmeter is black, while the negative battery terminal is marked with a minus sign.
  • 5 Examine the voltmeter. If you've hooked it up properly, you should see a reading somewhere between 13.6 volts and 14.3 volts. A reading higher than 14.4 volts warrants further testing by a professional. If your alternator is found to be overcharging, you will need to have it replaced.
  • Nov 13, 2011 | 1997 Buick LeSabre

    1 Answer

    2000 M5 battery installation. How do you distingquish the difference between the positive and negative battery cables.


    Hi, to be certain, you have to trace the cables. The negative cable will bolt directly to the engine casting or to the frame. The positive cable will go to a terminal on the starter solenoid or to a terminal on the fuse box.

    Mar 24, 2011 | 2000 BMW M5

    1 Answer

    How to change the starter . for olsmovile aurora 1997.


    Starter REMOVAL & INSTALLATION 3.5L Engine
    1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
    2. Disconnect the negative battery cable.
    3. Remove or disconnect the following:
      • Lower front air deflector
      • Starter electrical connectors
      • Torque converter cover
      • Starter bolts and shims
      • Starter Fig. 1: View of the starter - 3.5L engine 9306xg02.gif
      To install:
    4. Install or connect the following:
      • Starter. Torque the bolts to 37 ft. lbs. (50 Nm).
      • Torque converter cover
      • Starter electrical connectors. Torque the positive battery terminal nut to 84 inch lbs. (10 Nm) and the "S" terminal nut to 20 inch lbs. (2 Nm).
      • Lower front air deflector
      • Negative battery cable
    5. Lower the vehicle.
    3.8L Engine
    1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
    2. Disconnect the negative battery cable.
    3. Remove or disconnect the following:
      • Splash shield
      • Flywheel cover
      • Starter electrical connectors
      • Starter Fig. 2: View of the starter - 3.8L engine 9306xg03.gif
      To install:
    4. Install or connect the following:
      • Starter. Torque the bolts to 32 ft. lbs. (43 Nm).
      • Flywheel cover. Torque the bolts to 22 inch lbs. (7 Nm).
      • Starter electrical connectors. Torque the positive battery terminal nut to 12 ft. lbs. (16 Nm) and the "S" terminal nut to 22 inch lbs. (2.5 Nm).
      • Splash shield
      • Negative battery cable
    4.0L Engine
    1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
    2. Remove or disconnect the following:
      • Negative battery cable
      • Intake manifold
      • Starter electrical connectors
      • Starter Fig. 3: Exploded view of the starter - 4.0L engine 9306xg04.gif
      To install: WARNING
      Before installing the starter, torque the inner solenoid and battery terminal nuts to 70 inch lbs. (8 Nm). If not properly tightened, the starter may fail due to terminal or cap damage.
    3. Starter. Torque the bolts to 22 ft. lbs. (30 Nm).
    4. Starter electrical connectors. Torque the positive battery terminal nut to 70 inch lbs. (8 Nm) and the "S" terminal nut to 26 inch lbs. (3 Nm).
    5. Intake manifold
    6. Negative battery cable
    prev.gif next.gif

    Feb 04, 2011 | 1994 Oldsmobile 88

    1 Answer

    Do i need to take the battery out completely to recharge? and if not im having trouble locating positive or negative signs as to where to attach cables Help Please!


    leave battery in situ put on charge ,positive terminal is larger than the negative terminal ,look at the round shape of the terminal and look closely and you will see the difference in the size ,positive is the larger

    Jan 19, 2011 | 2007 Ferrari F430 Spider

    1 Answer

    My 92 dakota is not getting any spark


    Engine Fails To Start

    The "Checking For Spark'' test should be performed prior to this test.

    This is a basic test of the ignition system that systematically examines the battery, the coil, the engine controller, and its wiring harness and connections; the most likely culprits in a no-start condition at this stage.
    88472304.gif

    Fabricate this special jumper with a 0.33 MF capacitor in-line to test the ignition coil
    Click to Enlarge

    1. Unplug the ignition coil harness connector at the coil.
    2. Connect a set of small jumper wires (18 gauge or smaller) between the disconnected harness terminals and the ignition coil terminals.
    88472314.gif

    Terminal locations on the engine controller 14-way connector-1989 models
    Click to Enlarge 88472305.gif

    Engine controller 60-way connector-relevant terminals for testing are shown numbered
    Click to Enlarge

    1. Attach one lead of a a voltmeter to the positive (12V) jumper wire. Attach the negative side of the voltmeter to a good ground. Measure the voltage at the battery and confirm that enough current is available to operate the starting and ignition systems.
    2. Crank the engine for five seconds while monitoring the voltage at the coil positive terminal:
      1. If the voltage remains at zero, diagnosis of the fuel system should be performed. Also check the engine controller and auto shutdown relay.
      2. If voltage is at or near battery voltage and then drops to zero after one or two seconds of engine cranking, check the engine control module circuit.

    WARNING

    The ignition must be turned OFF prior to unplugging the engine controller connector. If it is not, electrical surging could occur causing damage to the unit or other electrical components in the vehicle.

    1. If the voltage remains at or near battery voltage during the entire five seconds, turn the ignition key OFF. Remove the 14-way connector on 1989 models, or the 60-way connector on 1990-96 models at the engine controller. Check the 14-way or 60-way connector for any spread terminals.
    1. Remove the test lead from the coil positive terminal. Connect an 18 gauge jumper wire between the battery positive terminal and the coil positive terminal.
    2. Make a special jumper cable (see illustration). Using the jumper MOMENTARILY ground terminal 12 on the 14-way connector (1989), or terminal 19 (see illustration) of the 1990-96 60-way connector. A spark should be generated at the coil wire when the ground is removed.
      1. If a spark is generated, replace the engine controller computer.
      2. If no spark is seen, use the special jumper to ground the coil negative terminal directly. If spark is produced, repair the wiring harness for an open circuit condition. If spark is not produced, replace the ignition coil
      this is for distributor ignition
    THIS IS TESTING OF DISTRIBUTORLESS IGN
    Testing

    This procedure requires an ohmmeter to test the coil packs for primary and secondary resistance (specifications are given for an ambient temperature of 70-80°F/21-27°C).
    88472320.gif

    The two coil packs contain five independent coils, which fire paired cylinders (shown numbered)
    Click to Enlarge

    1. Disconnect the negative battery cable.
    2. Determine the manufacturer of the coil. It should be labeled either a Diamond or Toyodenso.
    88472779.gif

    Location of critical terminals for checking the coil primary resistance-V10 engine front coils
    Click to Enlarge 88472780.gif

    Location of critical terminals for checking the coil primary resistance-V10 engine rear coils
    Click to Enlarge

    1. Check the secondary resistance of each individual paired coil by connecting an ohmmeter across the coil towers. This must be done between the correct cylinder pairs: 3/2, 7/4, 1/6, 9/8, or 5/10. Resistance for a Diamond coil should be 11,300-15,300 ohms. For a Toyodenso manufactured coil pack, resistance should be 11,300-13,300 ohms.
    88472323.gif

    Use an ohmmeter to check secondary resistance as shown

    1. Check the primary resistance of the front coil pack by attaching an ohmmeter between the B+ coil terminal and either the right (cylinders 3/2), center (cylinder 7/4), or left coil (cylinders 1/6) terminals. Resistance for a Diamond coil should be 0.97-1.18 ohms. Resistance for a Toyodenso coil should be 0.95-1.20 ohms.
    2. To test the primary resistance of the rear coil pack, attach an ohmmeter between the B+ coil terminal (see illustration) and either the right (cylinders 9/8), or left (cylinders 5/10) coil terminals. Resistance for a Diamond coil should be 0.97-1.18 ohms. Resistance for a Toyodenso coil should be 0.95-1.20 ohms.
    i hope this helps any more questions repl if help at all plz vote or comment me

    Jan 17, 2011 | 1995 Dodge Dakota

    4 Answers

    How do i connect a battery charger


    I suppose this is what you want to know
    The battery charger has 2 leads coming off it as well as the power lead to the external power source .THE TWO LEADS WITH CLAMPS ON GO TO THE BATTERY THE RED GOES TO THE POSITIVE TERMINAL PLUS SIGN AND THE BLACK GOES TO THE NEGATIVE TERMINAL.MINUS SIGN, THE POWER LEAD PLUGS INTO THE POWER. AND THAT IS ALL THERE IS TO IT..

    Sep 10, 2009 | 2002 Mitsubishi Lancer

    2 Answers

    WHAT IS THE TRICK TO REPLACING A BATTERY ON A 1992 LUMINA


    0900823d8004fd1f.jpg


    • Loosen the battery negative terminal clamp.

    0900823d8004fd20.jpg


    • Use a terminal clamp puller to remove the negative cable.

    0900823d8004fd21.jpg


    • Loosen the battery positive terminal clamp.

    0900823d8004fd22.jpg


    • Use a terminal clamp puller to remove the positive clamp.

    0900823d8004feae.jpg


    • Remove the battery hold-down hardware and any heat shields.

    0900823d8004feaf.jpg


    • Remove the battery from the tray.

    0900823d8004a233.jpg


    • Install the new battery into the tray.
    • Also install the hold-down hardware.

    0900823d8004fd23.jpg


    • Install the positive battery cable.
    • Then install the negative cable.
    • When installing a battery, be careful to observe the correct polarity. Reversing the cables destroys the diodes. Proper polarity must also be observed when connecting a booster battery, positive to positive and negative to ground.

    0900823d8004feb2.jpg

    Art courtesy of Delmar - Thomson Learning.
    • Coat the terminals with corrosion preventative spray, then check the job by starting the car.

    Jan 09, 2009 | 1992 Chevrolet Lumina

    2 Answers

    How do you jump start the battery on a 2004 porsche cayenne ?


    it should have one its only covered with plastic cover on it and the proper way to jump it is positive to positive then negative to source and just connect to a good ground the other vehicle..

    Dec 23, 2008 | 2005 Porsche Cayenne

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

    Related Topics:

    17 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Chevrolet Experts

    yadayada
    yadayada

    Level 3 Expert

    75066 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    22095 Answers

    Jeff Turcotte
    Jeff Turcotte

    Level 3 Expert

    7754 Answers

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

    Answer questions

    Manuals & User Guides

    Loading...