https://dev.z31library.com/index.php?action=history&feed=atom&title=Forums%2FZ31P%2Fz31-repairs-forums_electronics%2FBad%2Fweird_running_z31 2026-08-15T20:25:18Z Revision history for this page on the wiki MediaWiki 1.43.8 https://dev.z31library.com/index.php?title=Forums/Z31P/z31-repairs-forums_electronics/Bad/weird_running_z31&diff=5899&oldid=prev 2026-05-15T05:16:05Z

<p>Forum archive import (z31performance)</p> <p><b>New page</b></p><div>{{ForumImport<br /> |op_user=Datsun300<br /> |op_date=2018-07-31 22:25:52<br /> |post_count=5<br /> |archive_url=/Z31performance_archive/forum/z31-repairs-forums/electronics/540447-bad-weird-running-z31.html<br /> }}<br /> <br /> &#039;&#039;&#039;Datsun300:&#039;&#039;&#039; &lt;small&gt;(2018-07-31 22:25:52)&lt;/small&gt;<br /> <br /> So I have a 1984 Nissan 300zx ae auto and it’s got a very weird problem going on. last year I replaced the spark plug wires and I did the order wrong and I fixed it but I still had a misfire which I then found out a fuel injector wire broke. Well those wires ended up touching and I’ve had a lot of problems since then like if I floor it the engine like cuts out but if I ease into the load I can go to about 2200rpms, it’s a pain to start in the cold, it won’t idle very good like 6-500 rpms till dies, once warm hard to start because it misfires and back fires. Now weird thing is a while ago the alt overcharged to like 18volts and the car still started like crap but would run good as long as it was overcharged.<br /> <br /> ----<br /> &#039;&#039;&#039;dbruce:&#039;&#039;&#039; &lt;small&gt;(2018-08-01 01:08:07)&lt;/small&gt;<br /> <br /> &quot;about 2200rpms&quot; sound like limp home mode<br /> <br /> ----<br /> &#039;&#039;&#039;Datsun300:&#039;&#039;&#039; &lt;small&gt;(2018-08-01 01:18:29)&lt;/small&gt;<br /> <br /> See I thought so but if you continue to ease in it’ll go to about 2700<br /> <br /> ----<br /> &#039;&#039;&#039;Dunkine:&#039;&#039;&#039; &lt;small&gt;(2018-08-02 00:45:42)&lt;/small&gt;<br /> <br /> Check the codes on the ecu yet?<br /> <br /> ----<br /> &#039;&#039;&#039;Datsun300:&#039;&#039;&#039; &lt;small&gt;(2018-08-02 01:00:26)&lt;/small&gt;<br /> <br /> Maf,ac,ecu. I have replaced maf, who cares about ac and I have a new ecu but the car won’t start with that one</div>

z31p_Datsun300