NissanNismoZ Posted October 30, 2012 Share Posted October 30, 2012 Alright..so black pathy has been choking out pretty badly since it has gottEn cold out.. So..explanantion..say about a mile or two down the road after pulling out Cold..itll jusy stumble BADLY under ANY throttle unless i feather the pedal hard ans quick and shift it down to 1st or second qnd itll usually be okay around 4-6k..until.i.let off some and itll bog and bog!! Making like a FFFFFFFFFFFFFTTTTTTT noise..until warmed up.. Heres the video..managed to do it at a friends house.. http://static.photobucket.com/player.swf?file=http://vid208.photobucket.com/albums/bb9/Nismo_Nissan_350Z/VID_20121029_192020.mp4 Link to comment Share on other sites More sharing options...
NissanNismoZ Posted October 30, 2012 Author Share Posted October 30, 2012 Btw..thought it was the ECTS sensor..replaced it and it was fine until it got cold again.. Link to comment Share on other sites More sharing options...
Kyle94 Posted October 30, 2012 Share Posted October 30, 2012 That is about THE weirdest thing ive ever seen... And kinda funny. But really, i hope someone that had similar problems comes through! 1 Link to comment Share on other sites More sharing options...
Precise1 Posted October 30, 2012 Share Posted October 30, 2012 I had something like that happen to me, the truck would stutter a little in 1st gear when taking off, and then eventually in second also. It was the dizy cap, there was no center electrode contact left so it was just arcing along. Check your dizzy cap for damage, cracks and condensation. I'd also make sure the TPS is functioning correctly and look for vacuum leaks. Did you check the ECU for codes? B Link to comment Share on other sites More sharing options...
Leo94 Posted October 30, 2012 Share Posted October 30, 2012 Considering everything you've replaced on that pathfinder i'm surprised your still having all these issues. Link to comment Share on other sites More sharing options...
ahardb0dy Posted October 30, 2012 Share Posted October 30, 2012 (edited) well the check engine light is on, and when it revs high the speed does not increase so is the tranny slipping? It sounds like it's missing really really bad when you give it throttle. I would as Precise said start with checking the codes, than have the spark plug wires ever been replaced that you know of? I would check the dist. cap and rotor as Precise also suggested, you can take a spray bottle of water and at night while running spray down the wires and look for any sparks, it sounds like one of the wires ( or more than one) is bad and is arcing against metal. My sentra had a problem like that I could floor the gas and it would only go so fast, it turned out one of the plug wires had a hole in it down next to the head and it was arcing against the head, wrapped some electrical tape around it as temp fix to get home and it ran fine, although the spark burned thru the tape after about 20 miles. I used a set of NGK plug wires, they fit just like factory wires, are all labeled and the correct size (unlike some cheap aftermarket plug wires that are smaller and do not stay in the wire holders) Edited October 30, 2012 by ahardb0dy Link to comment Share on other sites More sharing options...
Leo94 Posted October 30, 2012 Share Posted October 30, 2012 Didn't he mention something about the mechanic using zip ties on his distributor or something like that on his other topic? Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 30, 2012 Share Posted October 30, 2012 He has 2 Pathfinders. The red one was the one with running issues, so he bought a black one which ended up having tranny....and now it appears engine issues. Link to comment Share on other sites More sharing options...
Leo94 Posted October 30, 2012 Share Posted October 30, 2012 I though he was talking about the red one, damn worst of luck. Link to comment Share on other sites More sharing options...
adamzan Posted October 30, 2012 Share Posted October 30, 2012 In that video, at least according to the temp gauge, it is warmed up :S . I agree with the other posters, does it smell of unburned fuel? I had a problem similar to that but it was the o2 sensor, and it happened only when warm. Link to comment Share on other sites More sharing options...
Leo94 Posted October 30, 2012 Share Posted October 30, 2012 well the check engine light is on, and when it revs high the speed does not increase so is the tranny slipping? It sounds like it's missing really really bad when you give it throttle. I think he was stationary and his dash is acting up because its staying on 14mph and slightly moving but if you look on the top left every now and then you see a light thats outside the car so he would be stationary. Link to comment Share on other sites More sharing options...
ahardb0dy Posted October 30, 2012 Share Posted October 30, 2012 ok, still sounds like a really bad miss, check the wires Link to comment Share on other sites More sharing options...
NissanNismoZ Posted October 30, 2012 Author Share Posted October 30, 2012 (edited) OK, i've been gone all day..but here's what i have.. This pathy doesnt warm up until roughly halfway up the temp gauge.. Red pathy would be warmed up roughly 1/4 up the temp gauge.. Lets see.. Spark plugs are new NGK. Spark plug wires..i havent changed them. but, none appear to arc, but ill check them. My codes are: 14 Vehicle Speed Sensor (explains loss of cruise..) 33 Heated Oxygen Sensor 34 Knock Sensor (i'll ignore for now..as im sure with that stumbling it'd set it off a lot.) 51 Injector Circuit (Problem?) Honestly..I dont know what these codes mean. I dont know how the ECU judges when to throw a code. My guess since it's not that advanced it would only throw one when say its disconnected, or grounding out? But. I do know, last time. I unplugged the ECTS and the stumbling stopped. I hate to leave it unplugged as it would try to die everytime i put it in gear. So i replaced it and hqvent had any problems. Then again its not been this cold since i replaced it..so problems are back.. Transmission does not slip in any gear but reverse. Yes, my speedo 'idles at 14mph' and it exactly 14mph off at every speed. It's like it needs rezeroed? It goes down to 0 with key off. But, if i let it have its fit long enough until its warm, it'll be fine and take off full of power! Like nothing ever happened. It's gotten to a point where i'll just limp somewhere in 1st-2nd gear and let it have its fit until it warms up. But, i know its not safe because the first time someone turns in fromt of me or a light turns red..ill be stuck until it warms up..i dont know what to do?? But ill check my wires for a arc and see how that goes.. Thank you!!!!! BTW I think all thats wrong with the famous red pathy is vacuum lines are in the wrong places! (Yeah..after all this time i compare it to black pathy and see how everything is completely routed wrong...oops. Anyway..if anymore ideas pop up ill be checking this often. Thanks! Edited October 30, 2012 by NissanNismoZ Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 30, 2012 Share Posted October 30, 2012 (edited) Your VSS would explain your speedo. Your heated oxygen sensor is your O2 sensor which could explain your power loss. And your injector circuit is a faulty fuel injector. Edited October 30, 2012 by Trogdor636 Link to comment Share on other sites More sharing options...
NissanNismoZ Posted October 30, 2012 Author Share Posted October 30, 2012 Aha! Thanks for the clarification!! OK..so the o2 definitely explains my crappy MPG. But..injector..how do I know when any are bad when it runs extremely smooth? (At least unless its having.its spell..) Link to comment Share on other sites More sharing options...
ahardb0dy Posted October 30, 2012 Share Posted October 30, 2012 there is a diagnostic in the FSM under the EC section for "hesitation when cold" you may want to look at. Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 30, 2012 Share Posted October 30, 2012 (edited) You are saying it has a horrible loss of power, so to me that isnt "running smooth" I had a 51 once. It started sputtering, and then died. I checked and got the 51. I found one injector that wasnt clicking like the others. Tapped it with a screwdriver, fired it up, ran fine. Cleared the code, and its never come back. The ECU remembers codes for 50 (I think...I'd have to check my book) start ups. Worst you could do is clear the codes and see if the 51 pops back up. Knock sensor I am of no help. I've had one since I bought it. It wont go away, and I'm reluctant to change the damn thing. It runs fine, I just think the timing is off a few degrees because of it. Edited October 30, 2012 by Trogdor636 Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 30, 2012 Share Posted October 30, 2012 So upon watching the video (I didnt realize there was one at first, I'm always on the Tapatalk version!) that actually sounds like what my truck was doing when it was giving me the Code 51. Link to comment Share on other sites More sharing options...
Precise1 Posted October 30, 2012 Share Posted October 30, 2012 Aha! Thanks for the clarification!! OK..so the o2 definitely explains my crappy MPG. But..injector..how do I know when any are bad when it runs extremely smooth? (At least unless its having.its spell..) It didn't sound smooth to me. Injector are tested by checking the resistance of the 2 pins, something like 8-12 or 14 ohms cold. I had an injector that only failed when warm, perhaps you have one that only fails cold. Another way to check is to use a mechanics stethescope, you can hear things perfectly and I've seen them for $5. Do you have a copy of the FSM to flip through? Not trying to discourage questions but some of these technical details are answered in it. there is a diagnostic in the FSM under the EC section for "hesitation when cold" you may want to look at. Good point... B Link to comment Share on other sites More sharing options...
ahardb0dy Posted October 30, 2012 Share Posted October 30, 2012 (edited) when the knock sensor (s) were bad in the Q45 we had, it ran OK but it had no power. I was going to suggest clearing the codes and seeing what comes up as well I think he said when it warms up it runs smooth Edited October 30, 2012 by ahardb0dy Link to comment Share on other sites More sharing options...
NissanNismoZ Posted October 31, 2012 Author Share Posted October 31, 2012 By smooth..I mean like..when its not cold out and having its spell it'll run great! Hmm.. I'll check my injectors as well. These codes were last reset last week..so they're definitely recent..before when I first.got it, the only codes I had were the H02 sensor. So code 51 would do it? I'll tap on all my injectors and see if maybe one has something stuck in it or something.. and the dizzy cap.. thanks everyone! Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 31, 2012 Share Posted October 31, 2012 So code 51 would do it? I'll tap on all my injectors and see if maybe one has something stuck in it or something.. and the dizzy cap.. thanks everyone! Its impossible to tell through video, but mine sounded a lot like that. B might have it nailed with his cold/warm injector theory. Link to comment Share on other sites More sharing options...
NissanNismoZ Posted October 31, 2012 Author Share Posted October 31, 2012 Hmm..well..I mean I'd think that..but it'll drive fine for a mile or two (it always happens at the same spot in the road..) but..I mean its true..It looks like I'll be testing injectors tomorrow. And definitely the dizzy cap.. Link to comment Share on other sites More sharing options...
ahardb0dy Posted October 31, 2012 Share Posted October 31, 2012 The diagnostic procedure I mentioned for hesitation when cold includes checking the MAF sensor, I know a code did not come up for that but wouldn't hurt to check it too. Link to comment Share on other sites More sharing options...
NissanNismoZ Posted October 31, 2012 Author Share Posted October 31, 2012 Haven't been able to do much But dizzy cap and rotor points look clean. Mayvebjust replaced? Two out of 3 screws were loose..like sitting g there. While the other was a littke snug but not much Maybe thats the problem? It being loose and lwtting condensation in? Hasnt done it yet.. thanks! Link to comment Share on other sites More sharing options...
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