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1987 Pathfinder surging idle
I have a 87 pathfinder with the 3.0v6. My idle is surging constantly between 1400-1900RPM. It runs fine besides that. i can drive it down the road at 60mph without a problem(unless the speed/gear require a RPM lower than that). Any ideas? i was told it might be an idle re-learn but i have no idea how to do that. thanks!
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First off, TY SOOOOO MUCH. i have posted this same question on 3 other webistes(pathfinder or nissan forums) with no responses in almost a week. I know where the TPS sensor is. On mine it has 2 plugs comming off of it. if i unplug one of them(with the longer wires, not directly plugging in) idle goes up to 2500+ RPM's, but it holds steady. I dont think i can get to the screws on the TPS without removing the throttle body. I got this vehicle for free from a lady that was going to junk it and i really want to keep it and get it running right. for ignition timing are you talking about adjusting the timing? Another point, when i first got it, it was surging from 1400-2800rpms, it dropped to what it is surging at now. ALSO(sorry) i have 2-3 vaccum lines capped off due to someone removing one of the emmission things(mounts on the driver side front under hood). That was removed and capped about 2 years ago and it has ran fine since then.
The engine was rebuilt about 25K miles ago and i have receipts for over $6k worth of repairs in hte past 4 years. Again, ty soooo much for the response. I will try to adjust the TPS tomorow and I WILL UPDATE. i dont leave people hanging, so again, thanks |
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We'll appreciate if you keep us update. |
#5
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Update-played with TPS tonight, turned all the way down surgess like normal, move it up at all and straight to 3k rpm and then above. At one point it had a fire in the engine, took off tps and bottom part is burned and disolored. Any way to check the tps? Or should I just get a new one? Thanks
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1987, idle, pathfinder, surging |
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