GLHS117 Posted December 29, 2014 Share Posted December 29, 2014 Hey all, I'm having some issues with my '95 SE. It's automatic, 4wd, VG30E, etc, so on and so on........ I recently developed this issue and I had figured after pulling the codes, that my issue was replacement of components so I went to the boneyard and picked up a new computer, mass airflow sensor, coil and coil amplifier as well as a distributor, all based on posts from the site. the truck will turn over but it wouldn't start, or so I thought. I replaced each item and tried to start and each time I had no luck, I replaced the old component, with the exception of the vehicle computer, because the truck seemed to run stronger once it started. Here's where it gets crazy: once it started, I took it for a ride and I've found that the vehicle's engine "skips" with almost every bump I hit. every so often, it will stall, or not start when necessary. I'm suspecting the spark issue is intermittent, causing the stalling and nothing else because that was the problem when it wouldn't start before. My question is: are there any particular places common to this issue that I should look at to find the fault in the wiring for this? I'm from Florida, working in Detroit right now and I HATE the cold! That said, I'm trying to spend as little time as possible under this thing! Any help would be greatly appreciated. Thanks! Link to comment Share on other sites More sharing options...
ebayfish Posted December 29, 2014 Share Posted December 29, 2014 (edited) Did it flash any codes? I had similar issues with clogged egr valve. I cleaned it & it never happened again. Check the gap on the plugs & make sure they are still good. Crank the engine at night & see if you see any spark from warn plug wires, etc, grounding to the engine, check ground points & make sure your MAF sensor has a good connection at the harness. Other than that, replace fuel filter, run seafoam in the gas to clean injectors. Also, have you checked the timing? Edited December 29, 2014 by ebayfish Link to comment Share on other sites More sharing options...
GLHS117 Posted December 29, 2014 Author Share Posted December 29, 2014 It flashed a MAF code, injector circuit code and injector leak code prior to installing the parts. Once I installed the new brain, I got no codes. The check engine light has come back on but I haven't run the diagnostics yet again, that'll happen tonight after work. The cap, rotor and plugs were changed about a month ago and a K7N filter (just the filter) has been added by me. I've only had the truck about 3 months. The rear main seal leaks pretty good and I was wondering if anyone knows which wires in the harness control the spark, as I grounded a plug to the intake and found that spark is intermittent. I ran the Seafoam through the tank and performed a backyard induction cleaning as well. When she runs, she runs great. Any input on the grounding locations on this truck? I haven't noticed them when I was under it last, but then again, I wasn't looking. The wires appear to be ok, but I haven't replaced them when I did the tune up. I'll post the latest codes this evening. Thanks in advance! Link to comment Share on other sites More sharing options...
GLHS117 Posted December 30, 2014 Author Share Posted December 30, 2014 Ok, here's what happened today: I started the truck and was going to check the codes but, the check engine light was not on anymore. I went to drive the truck and I turned on the headlights but got only the running lights so I thought "Great! now what!?!" I popped the hood and started wiggling wire harnesses and found a bulkhead clip attached to the positive battery terminal and when I wiggled that harness, the headlights came on, and the truck stalled! Further investigation revealed a couple of the clips loose in that connector so it appears that now I have both the headlights AND the spark issue solved! Who knew!?! Link to comment Share on other sites More sharing options...
ebayfish Posted December 30, 2014 Share Posted December 30, 2014 That'll do it, half the time to fix a pathfinder, jiggling wires are part of the task. Link to comment Share on other sites More sharing options...
Precise1 Posted December 30, 2014 Share Posted December 30, 2014 That is exactly what I was going to recommend as well. The Nissan wiring of that time wasn't the best, and the connectors sometimes corrode or lose pin contact. Connector and wire wiggling is a proven Pathfinder troubleshooting step... B Link to comment Share on other sites More sharing options...
Kingman Posted December 30, 2014 Share Posted December 30, 2014 Yes, those factory fusible links and connections are janky from the factory and are becoming a more common problem as these rigs pound on the miles. Link to comment Share on other sites More sharing options...
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