Question about 1985 Nissan 300ZX

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Non start,self diagnosis on the control unit code 21 no ign signal

Nissan 300zx 1985 non turbo. non starter, no h/t spark self diagnosis on the control box gave code 21.. no ignition signal...any ideas please mike

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Distributor is at fault

Posted on May 21, 2009

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1985 nissan 300zx has start signal failure how do you repair the problem


Start signal comes from the clutch engagement switch. When you press the clutch the pedal arm hits a switch and signals the motor to be able to start. Look and see if you have a little rubber piece pushed through a hole on the clutch pedal arm

Mar 18, 2013 | 1985 Nissan 300ZX

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Spark plug gap setting for 1985 nissan 300zx non turbo


call any auto parts store and they will tell you, the gap for non turbo 300zx.

Jan 13, 2012 | Cars & Trucks

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I have a 1986 non turbo Nissan 300zx Awhile ago,


About the only thing left is the Ignition Control Module.

Jan 13, 2011 | 1986 Nissan 300ZX

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Aftermarket turbo that would fit 1985 nissan 300zx turbo


company called "turbo technics" in the uk.....

Sep 15, 2010 | 1985 Nissan 300ZX

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How do i check my codes in a 86 nissan z24 pickup


The self-diagnostic system identifies malfunctions of signal systems such as sensors, actuators and wire harnesses based on the input signals received by the ECCS control unit. Various malfunctions are coded and displayed on the control unit by a series of blinking red and green lights. Results of the self-diagnosis are retained in the control unit's memory and are displayed when the mode selector, located on the rear of the control unit, Fig. 122, is switched to the On position. When displaying malfunction codes, the code number can be determined by counting the number of light pulses. The red light represents the first digit of the code, while the green light represents the second digit of the code. For example, a Code 32, would be displayed as three flashes of the red light, followed by two flashes of the green light. Malfunction codes can be translated as follows:
  1. Code 11 -- Crank angle sensor circuit malfunction.
  2. Code 12 -- Air flow meter malfunction.
  3. Code 13 -- Water temperature sensor circuit malfunction.
  4. Code 21 -- Ignition signal malfunction.
  5. Code 23 -- Idle switch circuit malfunction.
  6. Code 24 -- Transmission switch and clutch switch circuit malfunction.
  7. Code 32 -- Starter signal malfunction.
  8. Code 42 -- Throttle sensor circuit malfunction.
  9. Code 43 -- Injector circuit malfunction.
  10. Code 44 -- All monitored systems satisfactory.

May 10, 2010 | 1986 Nissan Pickup 4WD 1986

1 Answer

I am having a problem with my oil pressure... my guage which is not a dummy light, keeps dropping to like 1 kg per sq. inch when normally at 120kps i'm doing 3000rpm and the oil guage reads at around 3.7...


Don't get too concerned yet. Take it to the shop and let them scew in a well know mechanic's gage to make sure that the sensor isn't giving you a bad signal. That would be the first place to check.

Mar 08, 2010 | 1985 Nissan 300ZX

2 Answers

What dash light sensor looks like a 4 car garage? and what does it mean? my car is a 1985 300zx non turbo


That's the dummy light for the radiator or cooling system. If it comes on during normal running operation, it's indicating that the coolant is low or hot, and likely overheated already.

Here is a photo:
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Jul 12, 2009 | 1985 Nissan 300ZX

1 Answer

90-96 Nissan 300zx auto/5spd starter the same?


The starter should fit either an automatic or manual.

Jun 27, 2009 | 1991 Nissan 300ZX

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