Cutting Out - 1979 280zx - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
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#1 (permalink) Old 09-24-2013, 11:27 PM
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Cutting Out - 1979 280zx

Hey guys, so this has been a recurring problem for about 2 years now on my Z. It decides to turn off while driving no matter what the weather or however warm the car is. The first thing I decided to do was change the fuel filter. That solved the problem for about a week. Next, I realized it was an electrical problem because it would cut out with no warning and jump right back up. So I poked around and found the #6 spark plug wire corroded at the distributor cap. I replaced both and the problem went away for about 6 months. It came back with a bang. My car would turn off every day every 10 minutes or so at idle or while driving. Sometimes it'd fire right back up or it'd stay off unless I cranked it again(its standard trans.). So I saw the ign. module thread and its symptoms were similar to mine and after alot of checking and reviewing I replaced the exhaust manifold which was leaking (it might have been heating up the ign. module causing it to fail). It didn't work so I decided to get a reman. distributor with an ign module and replaced it all. The problem is still not gone. I have done every electrical test in the fsm and still no luck.
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#2 (permalink) Old 09-25-2013, 02:45 AM
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Where you live Comrade?


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#3 (permalink) Old 09-25-2013, 08:53 AM
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DFW Area. I know about Chris in Arlington. The problem is getting the car to him because of the 45 min drive.
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#4 (permalink) Old 09-25-2013, 10:36 AM
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Maybe just email or phone call away...

Contact othere peoples in local zed club.
I believe lots peoples there...

http://www.zcluboftexas.org/index.html


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#5 (permalink) Old 09-25-2013, 07:05 PM
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Check to see if your PCV valve is sticking open.
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#6 (permalink) Old 09-26-2013, 12:56 AM
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will do but wouldn't a pcv valve show some hesitation before turning off?
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#7 (permalink) Old 09-26-2013, 01:25 AM
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I know someone that had a corroded fuse that would do the same thing. It would get hot from current flow, expand and break the connection. When it cooled, back to normal. Took him forever to figure it out. Check all of your fusible links, bullet connectors, relays, etc. Any electrical connection could have corrosion, or could just be loose after 35 years.

The ECU is the other main electrical component, that has two transistors similar to those in the ignition module. The transistors can go bad, or some people have reported that the solder connections can break after years of usage.

Some times you can fix these kinds of problems just by disconnecting and reconnecting everything electrical. While you're doing that you might find one or two that obviously needed help anyway.
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#8 (permalink) Old 09-27-2013, 09:53 AM
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Ok will check on that this weekend.
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#9 (permalink) Old 09-27-2013, 09:47 PM
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I checked my battery. The positive terminal keeps getting this black coating even though i keep cleaning it. I think its a leak of some kind of acid. Could that be it?
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#10 (permalink) Old 09-28-2013, 02:36 PM
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Nvm. That wasn't the problem since it still happened even when I fixed it.
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