Question about 1998 Pontiac Grand Prix

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1997 pont. GP model 3.8 gt no spark

How can I test module ?? out put ohm reading?? termials to test ?
Coil test resistance >

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  • jmucha Jan 27, 2009

    yes still need fix

  • jmucha Jan 28, 2009

    Thanks found out that Crank sensor was bad ..

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  • 24 Answers

Take module to advance or oreillys they have a machine to test module for free.watch it being done an see results remember they do sell parts

Posted on Jan 28, 2009

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How do I check the coil on my 8n to verify it is OK?


A digital multimeter is required for testing the resistance levels of the ignition coil. The terminals of the coil are going to be marked "negative" and "positive," and these are the two points where the resistance of primary winding can be measured. Step 1: Prepare the multimeter
To check a 12 volt coil, set the multimeter to at least a 200 Ohms setting. Attach both leads of the meter to the coil-terminals with black to the negative terminal and red to the positive one.
Step 2: Test the resistance
The normal, acceptable range for a standard 12-volt car is 1.5 to 1.7 Ohms. See if the reading is within this range.
Step 3: Test the secondary coil resistance
Set the meter to 20K Ohm setting, and attach the leads to the ignition coil's center terminal. The reading for secondary-coil resistance should be 11, because if it is lower, that's the reason why sparks are not appearing

Oct 19, 2016 | Cars & Trucks

1 Answer

2001 s10 no spark no power to fuel pumpe eng cranks over


Hello Gary,

Lets start with the no spark...


Diagnosis & Testing

http://www.autozone.com/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f803714e1


The Distributor Ignition (DI) system is controlled by the Powertrain Control Module (PCM).

The Distributorless Ignition System (DIS) is controlled by the Powertrain Control Module (PCM).

Testing The Ignition Coil

  1. Remove the ignition coil(s).
  2. Using an ohmmeter, check the resistance between the primary terminals on the underside of the coil. The resistance should be 0.50-0.90 ohms.
  3. Check the resistance between the secondary terminals. It should be 5000-10,000 ohms.
  4. If the coil failed either test, replace the coil.
If the coils(s) are good check the ignitions leads by measuring their resistance. (Multi Meter required.) If the coil(s) and leads are good

Secondary Spark Test
http://www.autozone.com/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f80371564


Please provide some details on your engine option 4 cylinder/6cylinder 2 WD 4 WD. Mileage...

Jul 24, 2016 | 2001 Chevrolet S-10

2 Answers

Can I test an ignition module on an onan engine with a volt, ohm or amp meter?


well sure you can, allthough if you have allready replaced the coil and plug , i can't see why you'd need to , it's the last thing there is to replace , but if youd like to anyway , just ground the black lead of volt meter anywhere on engine thats not painted or rusty , hold red lead on - side of coil (its the one with half the battery voltage on it) and turn engine over slow as possible you should see the volts rise and fall as it turns over , if not the ign module is not working
also i question why does this have a condenser if it has electronic ign ? cant say id ever seen that before .

Sep 24, 2014 | Cars & Trucks

1 Answer

My 92 explorer has no spark


Hi, here are some tests you can do to diagnose the problem. Please let me know if you have questions.

First, use a voltmeter or 12 volt test light to check for power on the red wire going to pin 8 of the ignition control module when the key is on. The module is in the left front corner of the engine compartment.

jturcotte_2441.gif
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If there is no power, the problem is the ignition switch or EEC relay. If there is power, next, check the ignition coil as listed below.

IGNITION COIL TESTINGPrimary and Secondary Circuit Tests
  1. Turn the ignition switch OFF , disconnect the battery, then detach the wiring harness connector from the ignition coil to be tested.
  2. Check for dirt, corrosion or damage on the terminals.

PRIMARY RESISTANCE
  1. Use an ohmmeter to measure the resistance between the following terminals on the ignition coil, and note the resistance:

Except 2.3L, 2.5L and 5.0L engines


B+ to Coil 1 B+ to Coil 2 B+ to Coil 3
The resistance between all of these terminals should have been between 0.3-1.0 ohms. If the resistance was more or less than this value, the coil should be replaced with a new one.

SECONDARY RESISTANCE


jturcotte_2439.gif

Fig. Fig. 1: Engine ignition coil harness connections-3.0L and 4.0L engines

  1. Measure, using the ohmmeter, and note the resistance between each corresponding coil terminal and the two spark plug wire towers on the ignition coil. The coil terminals and plug wires towers are grouped as follows:
Except 2.3L, 2.5L and 5.0L engines

Terminal 3 (coil 1)-spark plugs 1 and 5 Terminal 2 (coil 3)-spark plugs 2 and 6 Terminal 1 (coil 2)-spark plugs 3 and 4

If the coils test good, move on the the crankshaft sensor.
Using a DVOM set to the DC scale to monitor less than 5 volts, measure the voltage between the sensor Cylinder Identification (CID) terminal and ground by backprobing the sensor connector. If the connector cannot be backprobed, fabricate or purchase a test harness. The sensor is okay if the voltage reading varies more than 0.1 volt with the engine running at varying RPM. (check both the blue and gray wires at the ignition module with the engine cranking.)



jturcotte_2442.gif

Fig. Fig. 3: CKP sensor wire harness connections for the 4.0L (VIN X and E) engines


If there is power and both the coils and sensor check good, replace the ignition control module.

Oct 27, 2011 | Cars & Trucks

1 Answer

I am trying to replace the igniyion coil but i dont know which one is bad


  • Unplug the spark plug wires from the coil and label the wires if necessary for proper installation.
  • 4 Unplug the pack's electrical connector and remove the coil pack from the engine, using a wrench or ratchet and socket if necessary. If your coil pack is mounted on the back of the engine, raise the front of the vehicle and safely support it on two jack stands to reach the coil pack from underneath the engine.
  • 5 Set your ohmmeter to the 20000 ohms range. Turn on your meter and touch the spark plug wire terminals on one of the coils with the meter leads. You may get a reading between 5000 to 15000 ohms, depending on your particular model. This checks the secondary resistance.
  • 6 Set your ohmmeter to the 10 ohms range, and touch the terminal B+ (usually the center prong on the coil pack electrical connector) with one of the meter test leads, and touch the corresponding coil prong on the electrical connector with the other test lead. You may get a reading between 0.3 and 1.0 or more, depending on your particular model. This checks the primary resistance on each coil.
  • 7 Repeat steps 6 and 7 for each coil in the pack assembly, and compare your resistance readings to the specifications given on your vehicle service manual (see "Tips"). If your readings are out of range, replace the coil or coils as necessary.


  • Read more: How to Check Coil Packs With a Voltage Meter ' eHow.com http://www.ehow.com/how_4912368_check-coil-packs-voltage-meter.html#ixzz13fJECvLx

    Oct 28, 2010 | 1997 Toyota Tercel

    1 Answer

    What should a multimeter read on a continuity test on the coil packs? i'm getting 1.9,1.7,1.7


    The multimeter can read the resistance and if it is not open or shorted out, I'd say that your readings are in the normal range, comparing each resistance with each other + or - 10%.

    I looked up the resistance readings on my online resource, but they did not list it specifically.
    ---
    I looked up the following on autozone.com:

    There are 3 dual-tower ignition coils that are part of the ignition control module (ICM). The ICM contains coil driver circuits that command the coils to operate. The Powertrain Control Module (PCM) controls each dual-tower ignition coil by transmitting timing pulses on the ignition coil control circuit to the ICM for the proper coil to enable a spark event.
    1. Inspect the spark plug wires for proper orientation.
    2. With the ignition OFF, remove the fuel pump relay.
    3. Crank the engine and test for a strong spark on each cylinder spark plug wire using a suitable spark plug tester. Ground the companion cylinder spark plug wire of each cylinder when it is tested.

      If a strong bright blue spark is present on all of the cylinders, remove and inspect all of the spark plugs for proper torque, proper gap, wear, damage, and fouling. Replace the spark plugs if necessary. If there is no spark on any of the cylinders, test the ignition voltage circuit of the Ignition Coil Module (ICM) for an open/high resistance or short to ground, or test the ground circuit of the ICM for an open/high resistance, or a faulty ICM. The wire circuit resistance should measure less than 3 ohms. If there is no spark on any of the cylinders, or spark is weak or intermittent, test the IC circuit for an open/high resistance, or a faulty ICM. The wire circuit resistance should measure less than 3 ohms. If spark is present on one or more of the cylinders, inspect and test the spark plug wires for arching, cuts, rubbing on other components, and proper resistance. If all tests are normal, then the system is operating correctly.
      ---

    Oct 08, 2010 | 2000 Chevrolet Venture

    2 Answers

    1987 Buick Century, V6, 2.8L will not start. No


    the 3 coils are mounted to the ignition module and as long as the sensors that signal the module to fire the coils individually are working I would try a module especially if all 3 coils are not firing..also if you have an ohmmeter for checking electrical resistance, the spec for the coils are 5000 to7000 ohms, measured between each coil from tower to tower (ie) #1and#4 2+5 and 3+6 any more than that and the coils are toasted..lol hope this helps also check the spark plug wires at each end maximum resistance is no more than 1000 ohms per inch,,,good luck

    Nov 25, 2009 | 1987 Buick Century

    1 Answer

    How do you check a dis coil (three coils on Ignition Control Unit) from 1997 Olds Cutlass Supreme 3.1L engine. Might you have the specs? I have a good ohm meter. Hand held OBD unit reports multiple random...


    3.1L Engine
    1. Tag and disconnect the two plug wires attached to the suspected coil.
    2. Remove the two screws securing the ignition coil to the Ignition Control Module (ICM).
    3. Remove the ignition coil.
    4. Before testing, visually inspect the coil for carbon paths or cracks which will contribute to weak spark symptoms.
    5. Using an ohmmeter, check the resistance between the primary terminals on the underside of the coil. The resistance should be 0.50-0.90 ohms.
    6. Check the resistance between the secondary terminals. It should be 5,000-8,000 ohms.
    7. If the coil failed either test, it must be replaced.

    Oct 07, 2009 | 1997 Oldsmobile Cutlass Supreme

    1 Answer

    88 grand am


    If you have a volt/ohm meter, you may want to first ohm check the resistance between the two spark plug towers on each ignition coil pack. Simply remove the spark plug wires from each coil pack and test. Both (if good) should test about the same resistance, (about 5-7 kOhms, but I don't have the exact specs handy on this particular vehicle. The reading may be higher, maybe around 7-12kOhms) but nonetheless, the reading of the 1-4 coil pack should closely match the 2-3 coil pack. If not, the new coil pack may be faulty and should be returned for a replacement.

    Also, when you remove the 1-4 coil pack, take a look at the primary spade connectors (2 lugs) coming out of the ignition module. Make certain these are clean and free of rust or corrosion. If so, simply (and gently) use a finger nail file or 400 (or equivilent) sandpaper to file the corrosion off and re-attach the coil pack.

    If one or both of these don't fix the problem, you may have to look at replacing the ignition module. But only do that after exhausting the other simpler and less expensive tests! :)

    I hope these tips help you out or at least point you in the right direction! :)

    Aug 19, 2009 | 2003 Pontiac Sunfire

    1 Answer

    P1370 and p1350 trouble codes


    P1370 Ignition Control (IC) Module 4x Reference too many pulses

    P1350 Ignition Control System

    Ok, these codes are signaling a malfunction within the Ignition control module. it is sending way to many signals to the coil. i recommend testing the coil for damage and irregular resistance. i will explain how to do this below. i would replace the module as well. The control moduel is Located Under hood, center, rear engine area, above valve cover, mounted in base of ignition coil pack

    Ignition Coil Test Procedures__

    Ignition Coil Resistance

    * with the key off and the battery lead to the ignition coil disconnected, use an Ohmmeter to measure the primary and secondary winding resistance of the ignition coil. when checking the resistance across the windings, pay particular attention to the meter reading. if the reading is out of specifications, even if it is only slightly out, the coil or coil assembly should be replaced.
    * To check the primary windings, calibrate an ohmmeter on the X1 scale and connect the meter leads to the primary coil terminals to test the winding.

    5d041b0.jpg

    * An infinite ohmmeter reading indicates an open winding. The winding is shorted if the meter reading is below the specified resistance. Most primary windings have a resistance of 0.5 to 2 ohms, but the exact manufacturer's specifications must be compared to the meter readings.
    * To check the secondary winding, calibrate the meter on the X1,000 scale and connect it from the coil's secondary terminal to one of the primary terminals.


    813a25f.jpg
    # A meter reading below the specified resistance indicates a shorted secondary winding. An infinite meter reading proves that the winding is open.
    # In some coils, the secondary winding is connected from the secondary terminal to the coil frame. When the secondary winding is tested in these coils, the ohmmeter must be connected from the secondary coil terminal to the coil frame or to the ground wire terminal extending from the coil frame. Many secondary windings have 8,000 to 20,000 ohms resistance, but the meter readings must be compared to the manufacturer's specifications. The ohmmeter tests do not indicate such defects as defective insulation around the coil windings, which causes high-voltage leaks.

    May 17, 2009 | 1997 Cadillac DeVille

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