Inyourface1650 Posted November 2, 2013 Share Posted November 2, 2013 (edited) Hey guys, I've had the intermittent poor idle/stalling issue for years, and have narrowed it down the infamous MAF sensor harness ground. I know this effects quite a few people, and many have simply wired in a new ground. While I am a proficient soldierer(?) and am quite happy running wires, I decided to order the official NIssan fix for the issue as specified in the TSB. Alkorahil got me the part number : 24079-40F00 ENGINE SUB HARNESS $20.39 What you get is this. Its basically an inline adapter with a ground wire coming out of it. HOWEVER - it is OEM quality wiring and I like that. (insert bad ground joke here...) You simply disconnect the MAF from your harness, and install this sucker in line. I simply grounded it to an available open bolt. Seems to be working well! Sorry no pictures installed - broken camera. The one thing it does seem to be missing is an mount of some kind. the end of the harness looks to be setup to held by something - it just kind of dangles by the airbox. Edited November 2, 2013 by Inyourface1650 Link to comment Share on other sites More sharing options...
Hytekrednek Posted November 2, 2013 Share Posted November 2, 2013 Cool, this is the first I heard about that. Will definitely look into doing this to mine before it starts. Link to comment Share on other sites More sharing options...
Alkorahil Posted November 6, 2013 Share Posted November 6, 2013 Just think.....my hands may have graced the bag that part came in at one point..... 3 Link to comment Share on other sites More sharing options...
Precise1 Posted November 6, 2013 Share Posted November 6, 2013 Just think.....my hands may have graced greased the bag that part came in at one point..... I think your spell checker done messed you up... B Link to comment Share on other sites More sharing options...
ahardb0dy Posted November 6, 2013 Share Posted November 6, 2013 so where does the ground wire go now with out this? Link to comment Share on other sites More sharing options...
Tungsten Posted November 7, 2013 Share Posted November 7, 2013 There is no ground wire without this. It goes to a 0 volt source on the ECU. I'm not sure why or how. Maybe there is a built in tuner of some sort on the ECU that tweaks the reference ground? Link to comment Share on other sites More sharing options...
nismothunder Posted November 7, 2013 Share Posted November 7, 2013 Good boy. Now go for the balls. Link to comment Share on other sites More sharing options...
Tungsten Posted November 7, 2013 Share Posted November 7, 2013 It could also be some sort of an internal ECU ground and for some reason it doesn't work sometimes so the harness just gives it an extra ground. Link to comment Share on other sites More sharing options...
Tungsten Posted November 7, 2013 Share Posted November 7, 2013 By the way, there is always that wires getting broken in the harness from pulling when changing air filter theory. Wiggling the wires might help to clear up the problem. I had that problem before when I took my fix harness off and what I did eventually was cut off the old factory harness a little more down the line and splice the new fix connector harness on. I left the ground connected on but I seemed to have no problems if the extra ground was not connected. Many theories exist for this problem. lol Ok done post spamming. Where is that edit button when you need it? Link to comment Share on other sites More sharing options...
ahardb0dy Posted November 7, 2013 Share Posted November 7, 2013 so why can't you just cut the black wire out of the harness and ground it ? Link to comment Share on other sites More sharing options...
RF600 Posted November 7, 2013 Share Posted November 7, 2013 You can just add a ground. When I did mine I put a new connector on also. Make sure if you add a ground that you actually get the ground. If not things will melt. Link to comment Share on other sites More sharing options...
RF600 Posted November 7, 2013 Share Posted November 7, 2013 so where does the ground wire go now with out this? There is an existing ground on the core support. I added my ground there. Link to comment Share on other sites More sharing options...
Alkorahil Posted November 8, 2013 Share Posted November 8, 2013 (edited) I mounted mine onto the inner side of the LH fender hoodledge. Edited November 8, 2013 by Alkorahil Link to comment Share on other sites More sharing options...
urimashe Posted November 8, 2013 Share Posted November 8, 2013 how can you tell your having a maf grounding problem? Link to comment Share on other sites More sharing options...
Precise1 Posted November 8, 2013 Share Posted November 8, 2013 When you come to NPORA trying to figure out why your truck runs like crap... It can be idle issues, loss of power, running rich, stumbling at certain RPM ranges, etc. Basically, the computer is getting wrong or no info on how much air is coming down the pipe so it tweaks engine control settings incorrectly. It can be intermittent as well. B Link to comment Share on other sites More sharing options...
edicer2 Posted November 9, 2013 Share Posted November 9, 2013 that part fixed my truck....damn thing wouldnt idle worth a @!*%! Link to comment Share on other sites More sharing options...
ahardb0dy Posted November 9, 2013 Share Posted November 9, 2013 I may have to try this Link to comment Share on other sites More sharing options...
Inyourface1650 Posted November 13, 2013 Author Share Posted November 13, 2013 (edited) The kicker was when it died in rush hour on my girlfriend. She fully stopped it in the middle of the road, put it in park, started it, and drove off. Im sure the people behind her were pleased.... I then showed her the "throw it in neutral while its still rolling, wood the pedal, start and slam into gear" trick (and bought the part) Edited November 13, 2013 by Inyourface1650 Link to comment Share on other sites More sharing options...
Kingman Posted November 13, 2013 Share Posted November 13, 2013 (edited) Please don't tell me it's an auto! People in rush hour traffic are really going to be pissed when there's a transmission scattered all over the road! Edited November 13, 2013 by Kingman Link to comment Share on other sites More sharing options...
Precise1 Posted November 13, 2013 Share Posted November 13, 2013 This coming from neutral drop man? B Link to comment Share on other sites More sharing options...
Kingman Posted November 13, 2013 Share Posted November 13, 2013 7 years ago before I knew what kind of damage it did to an auto! Link to comment Share on other sites More sharing options...
Inyourface1650 Posted November 14, 2013 Author Share Posted November 14, 2013 Please don't tell me it's an auto! People in rush hour traffic are really going to be pissed when there's a transmission scattered all over the road! Absolutely its auto. Oh btw the Torque converter wont unlock below about ~32F when the tranny is cold. Aka I neutral drop it nearly every morning in the winter to leave my parking spot LOL. Seems to hold up.... But in all seriousness. I had experienced the problem for years and knew what to do, somewhat safely. Putting my girl in that situation though...No bueno. Link to comment Share on other sites More sharing options...
huno Posted December 3, 2013 Share Posted December 3, 2013 Hello Can someone please measure which of the pins in the connector is grounded by this extra wire? Part is hardly or maybe not even available here(Poland) and I think it might be easy to fabricate something similar As a background I add that my pathy is not idling at all... and I am trying to rule out every possible reason. Link to comment Share on other sites More sharing options...
fast5speed Posted December 10, 2013 Share Posted December 10, 2013 Please don't tell me it's an auto! People in rush hour traffic are really going to be pissed when there's a transmission scattered all over the road! x2 Absolutely its auto. Oh btw the Torque converter wont unlock below about ~32F when the tranny is cold. Aka I neutral drop it nearly every morning in the winter to leave my parking spot LOL. Seems to hold up.... But in all seriousness. I had experienced the problem for years and knew what to do, somewhat safely. Putting my girl in that situation though...No bueno. The reason why these great trucks are in the junkyard all the time... That revised Nissan part looks fantastic! and only $20! Not even worth my time attempting to solder my old one. As of very recently, I've been experiencing intermittent sputtering at idle and around 2300-2800 RPM, but only in 3rd gear (or so it seems). I have a 5 speed, so it is very odd to think that a problem only occurs in a certain gear. For the idle, the truck will bounce up and down, but not come close to actually stalling, for about 10 seconds, then stop. It's only happened twice in the past month. I was driving today, and my truck just acted like it was out of gas, in that 3rd gear 2300-2800rpm situation. It would sputter, seem like it had no power, and almost made me put my hazards on and park it. Then, I pressed the gas pedal a little harder and it came back to life spectacularly. Also, if I shift to 4th gear, it will act normal and power right through the 2300-2800 range with no issues. I thought it was a fluke, but I was able to reproduce the results pretty reliably. Is my issue possibly related to a loose MAF ground? If so, is there a way to test it under normal conditions? Or do I have to catch the issue in the act and jiggle the wire? Would my ECU have any invisible codes stored? Link to comment Share on other sites More sharing options...
Inyourface1650 Posted December 15, 2013 Author Share Posted December 15, 2013 Installed pics: That extra wire hanging off (black with silver stripes) is the extra ground. Its about 24" long, which is way too long, but I just attached it to the the alarm ground. Link to comment Share on other sites More sharing options...
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