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Hey guy first time user of a Pathfinder forum. But i bought this pathfinder 1996 replaced a bunch of really nasty stuff. Was getting a single misfire randomly while driving (no rough idle) on code reader or pretty soon after starting and sitting for a minute same misfire at 6 and then a rough idle . So i replaced a ton of 25 year old parts. Fuel reg, fuel filter, injectors, exhaust sensors, check valve thing, new gasks everywhere. scrubbed intake and throttle body out because there was black fuel smelling stuff in there, replaced all the nasty hoses that were in intake and attached to it elsewhere. Its all clean now! I get it assembled with no injectors leaking and … suddenly, first time this has happened, the IAC valve motor is buzzing at key at ON position! Oh no truck sounds ..different.. when running and i swear i saw smoke. So i got 2 other IAC valves from scrap yard and one from ebay both are buzzing just as loud. i don't think the original IAC failed. i thought maybe i hurt the wires near the end by the connector, I don’t think so. Does this sound like i burned the ecu? Theres power enough to make buzz so probably not the fuse. Maybe i should re-pin the larger harness connector with new wiring. (Scared to break old plastic). Any way any input would be so great or i gotta tow it to a mech if i’m to dumb to figure it out later or maybe i need to reset something. the buzz sounds a motor of a fan just stopped spinning and is just humming and broken
So I have exhausted every search function on every pathfinder forum and here we are. Any ideas? '02 3.5 pathy with 295,xxx on it Was driving through town one day when it just died at a red light. Only way to keep it going was feathering the gas on startup and left foot braking to get home, if I let off the gas it died. Did some research, figured it was the IACV. Ordered one of those. I then put a zip tie over the throttle stop screw, just to use as a spacer to keep the throttle open a bit so that it would idle without me being in the drivers seat. Got one whiff of a weird smell I hadn't had before (no smoke from the steering column/ecu area) and shut it off. Replaced the IACV with a hitachi OEM unit, pulled the ecu apart to check if that IC17 chip had been fried by the failed iacv, or if there were any other signs of damage. Nothing, and i mean nothing, looks mint. Changed the TPS next to another OEM Hitachi unit, made sure to install it with exactly the same orientation as the original (it was a hitachi and looked factory). Truck still won't idle. Starts up but immediately falls on its face and dies without throttle. Sounds great with some throttle though, real smooth and steady. If I unplug the MAF while its running it dies so that leads me to believe that's working. When I plug in my scantool to the obd2 I don't get any codes either. I can't do the idle relearn procedure OR the Tps relearn if the truck won't stay running without the throttle open. Also really havent been able to come up with a good tps adjustment how-to/diagnostic. If anyone has one that would be the next thing I'd like to check more thoroughly.