Z does not accelerate

RBfastback

yeah I told them I had gen3's, test pipes an exhaust.
when I went there I had no ammo (codes) lol

Katiehp0

throttle bodys.. i have a 2014 with less than 10k on it and mine wont go over 1500rpm
thought it was limp mode but i guess not, now im just praying its the throttle body that needs to be cleaned.

Business Kat

Hey all. I just finished reading all 11 pages. I'm having all the same problems you guys are. I've been through limp mode once and when I towed it to Nissan it worked again magically. My car feels choked and takes a few seconds before it hits 2k rpms then it comes back to life. Legit scared to drive the car at times. Sometimes when I drive I know it's holding back power. Randomly at stops my car will freak out at idle (sometimes shutting off). Sometimes a restart helps. Sometimes driving a little helps. Sometimes 5 restarts help. Sometimes crying in the fetal position helps.

*I have a 2013 base model but I supercharged it. I have 15k miles but it started probably around 12k. My heart is crushed. I'm spending more money fixing this thing than I ever dreamed I would. To my understanding, the problem is the TB and the preventative care is catch cans?*

There is no consistency with the error. I've had random error codes up. I've had no error codes pop up. I've had days where it rips and gets up to 10psi but usually it feels like it's injured and can barely get to 6. How is this such a big issue????I had a vacuum leak we fixed but the problem still remainds. This was a pic before we fixed the leak.

P's_Z

This problem resurfaced for me last week, after a whole year without issues. but im not mad, as the dealer warned me this would probably happen again when the TBs got dirty, which kind of makes sense. The way i see it, this is part of the yearly maintenance items that i will have to do from now on.

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Katiehp0

so i just looked a the throttle body and it looks cleaned so i didnt clean it so i dont think it is.. but heres the situation,
when i start up the car and accelerte it, it will go up to 7-8000rpm! but it will only last for a few seconds no more than 5 seconds, after that it will not move past 1500rpm!its like its stuck right there! and it keeps doing that!! as long i start up the car it goes all out after that bam slower than a turtle! but there is something i need to mention, the car got in to an accident so the abs sensor is on, airbag is on cause it got dyployed.. no check engine. any ideas? ive been very pissed about this car!

RBfastback

either way I think ppl should do catch cans. my driver side catch can usually has a ounce of oil in every 1,000 miles and the passenger catch can usually has a .25 ounce of oil every 1000 miles.

P's_Z

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P's_Z

Took it to the dealer today to get the TB's cleaned. Dealer also mentioned theY dowloaded 2 updates to the ECU, one of them seems to be regarding this issue and the P0101 code that some get, including myself. ill get more details tomorrow when i go pick it up and let you all know

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carlitos_370z

Let me know when you pick up the car bro! and ask to MR Oneill if have to throw my car for an update looool!

P's_Z

Went early today to pick up my car but neither the service rep or mechanic was around. Ill have to call the dealer later for the details on the update they did to the ECU.

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P's_Z

Sorry bro, he wasnt around. I believe hes not working in that dealer anymore

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carlitos_370z

damn

Business Kat

I'm going to keep this updated and to the point because I don't want anyone to go through what I'm going through. It's been such a long process but here's what I can recall. Two main parties have looked at my car. One of which was nissan, and they haven't been helpful, so I don't know how much of what they say is valid. Also, my car has FI so something else I ran into was a vacuum leak which caused a significant cut in hp and I couldn't build boost. All occurrences are inconsistent and random. Only consistent thing was I could rely on my car to crap out on start up.

Assuming I had the vacuum leak:
Car shut off one day while driving and wouldn't start. Nissan said a hose on the fuel pump had come off and $600 they connected it.

Car went into limp mode. I went out of town and a week later I towed it to Nissan and it magically started up again. They cleared some codes and said nothing was wrong with it.

Fixed vacuum leak. If you're facing the hood, bottom right by the wastegate, there's a little plastic part that was crushed for me and so it was leaking air. Stillen said the $5 part isn't covered under warranty because they're known to get damaged (which makes no sense to me)

Vacuum leak fixed:
Car still doesn't know what to do when it starts. Idles are up and down. I start driving and the car spews black smoke out the pipes slowly inching around my neighborhood. A few minutes and a couple stop signs later the car starts taking off normally. At idle the car will still freak out some times even after warmed up.

Got my throttle bodies cleaned. Idle was a little wonky but then cleared up. I engaged reverse and it started acting weird a few seconds later. Waited a min, acted normal. Drove it home normal. Everything's been normal. I will continue to drive it around and see if anything else goes wrong.

Next step is getting an oil pressure gauge and a/f gauge to see if maybe it's a fuel issue.

Kabestro

For me, cleaned my throttle bodies at 30,000 miles, and no problem since. I'm at 41,000 miles right now. But if you're FI it could be more than just TB's. Hope you find the cause

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Stillen Gen 3 CAI / Fast Intentions HFC and CBE 12" Res. (#730) / Swift Springs / 20mm H&R Spacers / Clutch Helper Spring / UpRev Tune 322whp.

Business Kat

Update: I've been about 95% problem free. If it chokes it's usually on a cold start. Beyond that it won't hold the choke, it'll just stutter once and get back. If the idle goes crazy it usually fixes itself after a few seconds of searching up and down and/or a couple revs

I also noticed, sitting in stop and go traffic, that if I let off more clutch than I give more gas on a take off it causes the car to enter that confused idle state. Will continue to update once oil pressure gauge goes in next week