Question about 1990 Nissan Pulsar
I can give you a little general help on this. With key on, the coil primary positive wire should have voltage. I think that may be a black/white wire? This is directly from the ignition switch on the run wire. If you have power there, then everything else is in the distributor and controlled by the ecu. I see you have changed the coil, the distributor, and the ecu...check the main relay, it's a power source for the ecu. The power feed to the main relay is a 25amp fuse link (see you changed fuse links, too). Is the ecu on? Key on, all warning lights, and check engine light on?
I cannot find a test procedure for diagnosis. But as I said, everything is inside the distributor. Yes, there is a crank angle sensor, more commonly known as a Camshaft Position (CMP) Sensor. Essentially the same thing, the CMP sensor sends a signal to the ecu of both engine speed and piston position reference-TDC. The ecu then determines ignition timing-sending a spark signal to the ignition module inside the distributor-then the coil sends spark. The sensor has a rotor plate with 360 slits for 1 degree signal (angle signal) and 4 slits for rpm signal. Has a light emitting diode and a photo diode to catch the signals...it's all sent to the computer. Maybe you got a bad distributor?
Posted on Nov 28, 2013
Your car has both a crank and cam position sensor. First start with your crankshaft position sensor. It is located by the harmonic balancer on the front of the motor.
Posted on Nov 28, 2013
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Posted on Jan 02, 2017
Try taking your air cleaner cover off, and rev the engine to about 3000rpm, put a clean lint free cloth or your hand over the mouth of the carburettor and the engine will die. Try to keep it going for about 10 seconds at about 1500 rpm and take the cloth away until it runs smoothly again at 3000 rpm. Air cleaner back on and see if that makes a difference. It is an effective way of clearing jets that are not too badly blocked.
Posted on Mar 02, 2010
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Apr 28, 2014 | 1990 Nissan Pulsar
Dec 06, 2013 | Cars & Trucks
May 28, 2012 | 1990 Nissan Pulsar
Please see my tip at http://www.fixya.com/cars/r6223989-ignition_coil_doesn_t_spark . These are generic instructions--specific instructions are pasted below from Autozone.com. If you get stuck, please get back to me.
Use a test light to check for power to the coil on the black wire with a yellow stripe--see procedure below and other tests you can run. You will need a volt-ohm meter to run most of these tests.
The system used on 1990-95 Accords and 1989-95 fuel injected Preludes uses the distributor components to signal the engine computer. The ECU triggers the spark through the igniter unit and coil. This spark timing is controlled by the computer as an integrated function of the fuel management system. The distributor contains a crankshaft angle sensor and a No. 1 Cylinder Top Dead Center (TDC) sensor. Using these and other electrical inputs, the computer controls spark timing electrically.
1990-91 ACCORD Fig. Fig. 6: Terminal identification on 1990-91 Accords
See Figure 6
See Figure 16
Fig. Fig. 6: Terminal identification on 1990-91 Accords
Fig. Fig. 16: Coil terminal designation on 1990-91 Accords
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