Question about 1983 Nissan 280ZX

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280 zx dies after reaching normal opperating tempature.

83 280zx was running rough. I did a complete tune up. I chang2d distributor, ignitipn module, coil, battery etc. I havent cleaned terminals on ECU, or replaced any EFI relays. I did replace ignition swith with a used one. I guess after all the new parts, I thought it would be ok to use one of the many used obes ive gotten from wrecking yards. I need a solution to my problem.

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  • Expert
  • 69 Answers

CHECK YOUR FUEL PUMP

Posted on Nov 20, 2013

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Posted on Jan 02, 2017

Ajkill
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SOURCE: IGNITION FAILURE ON 280 ZX (82)

  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.
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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83 280 zx dyes when warm. Complete tune up. Then new distributor and ignition module. Change ignition switch with many of the used ones ive got from wrecking yard. I havent cleaned terminals on ECU or


Hello! I've been there too. I guess you have touched your coil after the engine stops. If the coil is hot, usually the cause is a very high resistance in the high tension circuit. That is between the coil and spark plugs. Probably something makes a false contact or loose conection or the gap at the plugs it too big.
If your coil is cold, perhaps your coolant temperature sensor is bad. This sensor tells the ecu or the cold start valve to squirt more fuel. When it fails your engine can't start when cold or it dies when hot depending on the failure type. Another thing which can go wrong if your coil is cold can be the cold start valve. This is an auxiliar injector located at the throttle body. When it fails, it simply doesn't inject fuel or injects all the time! (Only 80's cars have cold start valve)

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Car died on frway towed to shop started up. 3 years ago had tune up and car died. mech said needed new distributor module 400$. got a used one same problem. Changed plug wires and ran fine till now. Thats...


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That does sound like a malfunction with the ignition module inside of the distributor, and you can remove the ignition module and have it tested for free at most auto part stores.

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