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Stalls after warming up, wont restart

1987 nissan d21 v6 4x4, I get 4 short green led flashes when I run the diagnostics on the ecu. What does that mean? Could that indicate a bad ignition control module? This truck shuts down and not start after warming up for a few minutes.

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  • saltydog8159 Feb 16, 2014

    It will start again after cooling down.

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  • Cars & Trucks Master
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The vehicle uses flashing led's to represent faults as it is prior to 1988 when OB system came into place . You will have to contact the dealer service centre to find what the flashes mean as a code or failure of a sensor.

Posted on Feb 16, 2014

6 Suggested Answers

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Posted on Jan 02, 2017

  • 1118 Answers

SOURCE: 1991 lesabre wont start after shutting down. If it

Best to do a fuel pressure test, pump might be weak and dosent show up until it gets gets warm. Best to do the test after it quits again when pump is at its hottest. If you havent done it yet chg. fuel filter too.

Posted on Mar 26, 2009

  • 3600 Answers

SOURCE: my 1990 nissan hard body d21 short bed truck wont

fuel pump and fuel sock is bad replace them but first replace the fuel filter, it's located driverside on the inside of frame rail under door.

Posted on Aug 14, 2009

  • 318 Answers

SOURCE: I HAVE A 88 HONDA CIVIC, IT IS HAVING TROUBLE STARTING.

The fuel pump relay is burried under the dash. The new one will help you find the old one. It is bigger than e regular relay.
It is on the drivers side Ithink.
If you don't hear the pump when you turn the key it will never start. All of those relays fail because these cars outlast them.

Posted on Dec 09, 2009

  • 138 Answers

SOURCE: 2000 vw cabrio runs normal and shuts down, takes 5

On some models, the Engine Control unit has a power supply relay. These relays some times get internal dry solder points. After driving for some time the the solder will get hot and separate. When it cools down it makes contact again. You will have to replace this relay or open it up and re- solder the solder joints. The relay is usually located on the main relay station in position 3. the relay station is located behind the right dash panel.[right hand drive vehicles]. You may need to refer to a manual for your specific model to find the exact location of the relay.

Posted on Jun 04, 2010

  • 25 Answers

SOURCE: hi, i have a 1987

How did this start happening? Have you changed anything recently. Commonly it too rich in petrol or timing is too advanced.

Posted on Jan 18, 2011

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How do i check for codes?


Turn on and off three times don't start then will flash two flashes will 2 small gaps four flashes will be 4 that mean you have code # 24.at the end will be 5 and 5 means 55 and of codes.

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Hi, if I change my computer to my Nissan 300ZX 1986 I have to reset my computer or simply change it. Thank you for answer.


There is no re-setting. You just change it out. Be sure and disconnect battery before unplugging the ecu. It's a simple swap and go.
If yours is like my '87 Sentra, there is no trouble code capability, but there are limited diagnostic functions. The red and green LED lights and the diagnostic switch (on/off), can tell you if problems are present in the system or not. You just have to follow the diagnostic procedure.
Here's how: Make sure diagnostic switch on ecu is off. Run engine at 2000 rpm for 5 minutes, at no load. Look at green led: if it flashes at least 5 times in 10 seconds (that is the oxygen sensor making it flash), turn car off. Turn diagnostic switch on. Turn key to on, do not start engine. Check led's: if red is off and green on steady-No problems present in system.
If the red light is on and green light is flashing, post back and I can furnish the rest of the diagnostic procedure-basically, you will be checking voltages and resistance of all solenoids and relays the ecu controls. The green led may flash in two different sequences (either longer flashes and short pauses, or longer pauses and short flashes) when in diag. mode (with the red led on), and that will lead you down two different diagnostic routes. Pretty simple, really, and pretty effective. Took me hours and hours before I realized I even had this diagnostic function.

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1987 300 zx starts the quits after 2 minutes and won't start again


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Nissan pulsar 1987 n13 the ECM light came one and the car cut out and won't start again and I need to know where the ECM is


Hi, the computer is under the passenger's seat. Code extraction procedure is pasted below.


READING CODES Modes will not switch while the engine is running. The ECM automatically switches to MODE I when the ignition is switchedOFF.
1984-90 Vehicles With Dual LED System
The self-diagnostic system has 5 modes. To switch modes, switch the ignition ON and use a screwdriver to turn the mode select switch through the access port on the ECM. The inspection lights will begin to flash. When the desired mode has been entered, turn the screwdriver fully counterclockwise. The red LED and green LED perform different functions in different modes.
Mode I-
This is the normal vehicle operating mode. The green LED will indicate loop status. If the green LED is not blinking when the engine is running, the vehicle is in open loop, or the HO 2 S, O 2 S, or sensor circuit has a malfunction. If the green LED is blinking, the vehicle is in closed loop. If a malfunction takes place, the red LED and the MIL will glow, indicating a malfunction has occurred.
Mode II-
Both the red LED and green LED are used to monitor mixture ratio feedback control. The green LED will function as described in MODE I. If vehicle is in open loop, the red LED and green LED will remain on or off. In order for results to be valid, vehicle must be in closed loop. In closed loop, the red LED remains off if the system is running rich, comes on if the system is running lean, and blinks at the same time with the green LED if system is within 5% of the exact air/fuel ratio.
Mode III
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Mode IV-
This mode is used for checking the throttle plate (TP) switch, starter, and vehicle speed switch status. When the TP switch or starter switch is activated, the red LED will briefly flash as the status changes. For VSS status, the green LED will remain off when vehicle speed is less than 12 mph (19 km/h) and come on when vehicle speed is greater than 12 mph (19 km/h).
Mode V-
This mode represents a real-time diagnostic test of the crank angle sensor, ignition signal and the mass airflow signal. The malfunction code will be displayed only when the malfunction occurs and will not be stored in memory. The output code will appear as a single or short string of pulses. Count the number of pulses for the malfunction code.



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Click on the following free direct Link. It has the correct Timing Belt Diagram for your 1987 Nissan D21 Pickup with the unspecified 2.4L SOHC In-Line 4, or the 3.0L SOHC V6 Engine.

Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!


http://www.2carpros.com/car_repair_information/year/1987/make/nissan/model/pickup/1987_nissan_pickup_timing_belt_diagram_marks.htm

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