Question about 1983 Nissan 280ZX

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IGNITION FAILURE ON 280 ZX (82)

Vehicle was running fine while i was working on vacuum for air con, revving fine ,idling fine went to move it and car just died, fuel pump still seems to be working (cutting off after 5 secs) went to check spark at distributor, main coil lead broke,replaced it with new one also replaced distributor cap as there was corrosion in main coil plug, tried starting but still no joy have ordered new ignition module! not sure if it will fix problem any ideas???? (replaced coil not to long ago !)

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  • tazdevil676 Oct 13, 2008

    THANKS FOR THE QUICK REPLY AND ADVICE , WILL GIVE IT A TRY AND HOPEFULLY IT WILL FIX THE PROBLEM! THANKS AGAIN EVERYBODY! REGARDS FROM tazdevil676

  • Anonymous Mar 14, 2014

    drove it to work ran fine got in it after work wont start. how do i take the distributor aprt to replace the coil ?

  • Anonymous Mar 21, 2014

    I've changed leads ,plugs ,checked battery lead changed distributor cap, could it be the coil ? How do I found out

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This may sound simplistic, but, have you checked all your fuses and fusible links. Eliminate the small stuff and start isolating the different electrical zones. I'm not sure if this was a solution or an inquiry. Let us know how its going so the experts here can continue to assist you.

anaanymous

Posted on Oct 13, 2008

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  1. Turn the ignition switch OFF. Disconnect the fusible link connector for the fuel injection wiring harness. Be sure the ignition is OFF before doing this. Disconnect the cold start valve wiring harness connector. Disconnect the high tension lead (coil-to-distributor) at the distributor and hold it 0.13-0.25 in. (3.3-6.3mm) away from the cylinder head with a pair of insulated pliers and a heavy glove. When the engine is cranked, a spark should be observed. If not, check the lead and replace as necessary. If there is still no spark, go on with the following system checks.
    1. Make a check of the power supply circuit. Turn the ignition OFF. Detach the connector from the top of the IC unit. Turn the ignition ON. Measure the voltage at each terminal of the connector in turn by touching the probe of positive lead of the voltmeter to one of the terminals and touching the probe of the negative lead of the voltmeter to a ground, such as the engine. In each case, battery voltage should be indicated. If not, check all of the wiring, the ignition switch and all connectors for breaks, corrosion, discontinuity etc., then repair as necessary
    2. Check the primary windings of the ignition coil. Turn the ignition OFF. Detach the harness connector from the negative coil terminal. Use an ohmmeter to measure the resistance between the positive and negative coil terminals. If resistance is 0.84-1.02 ohms, the coil is OK; replace it if the reading is far from this range.
  2. If the power supply, circuits, wiring and coil are in good shape, check the IC unit and pick-up coil as follows:
    1. Turn the ignition OFF.
    2. Remove the distributor cap and ignition rotor.
    3. Using an ohmmeter, measure the resistance between the two terminals of the pick-up coil, where they attach to the IC unit. Measure the resistance by reversing the polarity of the probes. If approximately 400 ohms are indicated, the pick-up coil is OK, but the IC unit is bad and must be replaced.
IGNITION FAILURE ON 280 ZX (82) - 0900c152800716f1.jpgFig. 10: Connect the ohmmeter to the pick-up coil terminals-1979-83 models 0900c152800716f3.jpgFig. 11: Remove the screws (arrows) to detach the IC unit-1979-83 models
  1. If the resistance is other than 400 ohms, proceed with the following:
    1. Be certain the two pin connector to the IC unit is secure.
    2. Turn the ignition ON.
    3. Measure the voltage at the ignition coil's negative terminal.
    4. Turn the ignition OFF.
WARNINGRemove the tester probe from the coil negative terminal before switching the ignition OFF, to prevent burning out the tester.
    1. If 0 voltage is indicated, the IC unit is bad and must be replaced.
  1. If battery voltage is indicated, remove the IC unit from the distributor, by proceeding as follows:
    1. Disconnect the battery ground (negative) cable.
    2. Remove the distributor cap and ignition rotor.
    3. Disconnect the harness connector from the top of the IC unit.
    4. Remove the two screws securing the IC unit to the distributor.
    5. Disconnect the two pick-up coil wires from the IC unit.
WARNINGPull the connectors free with a pair of needlenose pliers. DO NOT pull on the wires to detach the connectors.
    1. Remove the IC unit.
  1. Measure the resistance between the terminals of the pick-up coil. It should be approximately 400 ohms. If so, the pick-up coil is OK and the IC unit is bad. If the resistance is other than 400 ohms, the pick-up coil is bad and must be replaced.

Posted on Oct 13, 2008

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