Z does not accelerate

P's_Z

So i called nissan dealer today to check on the status of my car and turns out neither the service advisor or technician are working today

The service advisor said that they would need until wednesdays to work on my car, but it turns out its just because they were OFF today. I ask to speak with the service manager and he says that its because they cannot assign a different technician to work on my car if one has already started, which makes sense, but when i ask the manager why didnt the advisor tell me this so i could pick up my car and not miss work today and bring it back on wednesday, all hell breaks loose and the manager gets pissed off saying what difference does it make since i already knew they would need the car until wednesday

I then again explain that i missed work when i could have picked up my car and go to work today, and obviously tell him i dont like his tone of voice

From there its all downhill and i get piiiiiiiissed. All in all, cant wait to pick up my car and file a complaint on his

Not sure if im being a bit of a d!ck with expecting the advisor to be more clear about why they needed more time, but the service manager should have not behaved the way he did and talk to a customer like that. I was upset but in no way disrespecting him until he started yapping away like he did when i questioned him. Already got the nissan customer affairs phone number cause im calling and reporting him

Thanks for listening, guys

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Zeta

P's_Z

Update: dealer called and told me that the problem are the throtle bodies and they need to be replaced. $2,200 for both TBs, plus labor and taxes

Fortunately, i have extended warranty but now i have to wait for the approval saying they will cover it. Im pretty frustrated right now and a bit dissapointed that a 3 year old car needs to have TB's replaced. I know this sort of stuff happens, but this is a yearly problem. Ill wait for the warranty response, but right now i feel i dont want to keep the Z after this.

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Zeta

Vicster

IMO - This is a known problem in the Z34 and it is documented and has been reported several times over. You shouldn't need to pay a dime for them to be replaced since it was some sort of manufacturing defect.

FYI - I have had zero issues since having my replaced about a year and half ago and I've put about 25k miles on it since then (I think). Which, if I recall correctly, is more miles than when I first started noticing issues when she was brand new.

Any how, good luck getting things figured out. I personally know how much of a PITA this whole ordeal can be and I really hope your extended warranty will cover the parts if Nissan won't cover it as a known defect.

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-Chris

'13 Z34 Touring Sport | ARK GRiP CBE | Stillen G3 CAI | AAM HFC | UpRev | 20mm Z1 Spacers | StopTech Drilled/Slotted Rotors | StopTech SS Lines

Business Kat

My Z is supercharged, I don't know what yours is but I finally got mine to work properly. They had to replace a throttle body on mine but the cause of it was the throttle position sensor that plugged into it. I had gotten all kinds of codes and problems and FINALLY it threw out tps after everything else had died.

We replaced the crappy tps extension stillen provided and insulated a new one as well as replacing the throttle body. The guys at uprev said that it was just the part that the tps connects to but you can't just replace that so they had to do the whole thing. Don't know if I got shafted on that but my car finally works! I want to make a sticky about this because this problem was a nightmare and I don't want anyone else to go through it.

Hope the throttle bodies fix your problem.

Business Kat

yup... a $40 cable from Stillen. They also sent me a bodgy plastic elbow joint, a $5 part that they told me wasn't covered by warranty, and the map for the wrong vehicle when I got the kit. Thousands of dollars I'll never see again. Gj stillen

Business Kat

Lack of Power - Limp Mode - Shut Offs - SOLVED

Read through the whole thread for details but here's the gist of it.

Car: 2013 370z with stillen supercharger. Installed and tuned in CA. Moved to Texas. Problems started.

Problems: Car hesitated under 3k rpm and then would take off just fine. Random limp modes. Random codes involving throttle body, air flow, etc. Car would sputter at idle. Couldn't find correct idle at idle. Misfires. Stalls. You name it.

Solution: After taking it to a mechanic time and time again to fix whatever problems would happen we finally found the source. Throttle bodies if you catch it too late, otherwise it's the throttle position sensor. When you get Stillens kit they send you an extension cable. This cable is conveniently placed in an area exposed to heat. Here is said sensor:


In my case, so they told me, the sensor would over heat and cause all these problems. Sometimes it would totally shut the car down as a safety mechanism. Also, in my case, we had to replace the throttle body because the little thing the tps plugs into, that's attached to the throttle body, needed to be replaced as it was more or less fried. But they don't make that individual part so we had to replace the whole thing.

Here is the new insulated cable:

As you can see it's much heftier than than before.

Here is the little connector thingy that got fried. Or maybe they upsold me:


And here is another angle of where the cable plugs into the thingy on the throttle body:


And here is a shot of the whole thing because why not:


For my duration with this problem all problems were random and inconclusive. A restart fixed it half the time. One time I waited 2 days and it turn on. Finally had it towed to nissan where the car started right up perfectly fine. Someone with a non supercharged Z please post if this helps because I know you guys have the same problem too and If the remedy is the same then we've found the cure. All in all I'm glad it was solved and I can sell the car knowing the next guy won't have to deal with this nonsense.

Thank you all for your support through this and I hope all you guys with this problem out there get it solved as well.

EZT

Figured I would chime into this as something similar happened to me tonight.

Jumped onto interstate and attempt to merge over into fast lane, apply some gas and my Z just stutters. Felt like I hit a rev-limiter or went into limp mode for no apparent reason. Oil temps are 195, no SES light present. My initial thought was I had a vacuum leak. The only thing I've done recently was dropped in a new set of Black Hex R2C filters. I get home on an open stretch of road and go WOT with no problem.

Car has 106k miles. Spark plugs recently replaced.

Optimiser

Same thing happened to me with the Stillen SC TB extension cable. My shop was able to diagnose and repair the faulty pin/connection and so far it's been ok since.

P's_Z

Thanks to all for writing. Have not written much since i have no update. taking the Z to another dealer on monday for a second opinion just to be sure the first dealer wasnt trying to eff me over because of the problem i had with the service manager. If it turns out to be the TBs, i found reasonable priced hitachi ones on amazon or i might go with synolimits ported TBs.

Lets see what happens...

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Zeta

P's_Z

Finally got my car back on friday, turns out fuel lines were broken

Apparently, the paint shop that worked on my car a few months ago broke the lines while lifting the car when they removed the door and fender

Obviously, i have no hard evidence of this, however i do have a good relation with the owner of the shop, so ill be talking with him this week to explain what happened.

Anyways, just wanted to update you guys on this, since it seems that fuel issues also cause the same behavior in our cars as with air intake related issues.

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Zeta

Datsun Z

I've got the same throttle hesitation issue after stopping at the lights for a few minutes and taking off in 1st gear. I will also try to clean the throttle bodies and hopefully fix the issue. Thank you all for posting your issues and the fixes you had. This is why I love this forum. Everyone is happy to share their experiences and happy to help.

P's_Z

thats what were here for!

For me, besides this last problem, its either been dirty TBs or crappy 91oct gas. Also check/clean maf sensors, carefully, they get dirty after a while, especially if you have K&N oiled air filter like me

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Zeta

Chasedixon21

okay guys this is the 2nd time in the last week my car is in the shop for the same thing. Last time I was in there they told me they cleaned off the throttle body position sensors since they could not find a particular code stating the problem and since I had no video proof I took that and went on my way. This issue always starts out the same, ill get in the car start it everything seems normal I take off try to accelerate in 2nd nothing at all. ill finally get up to speed to go into 4th and then ill try to downshift to 3rd and when blipping the throttle I got no response AT ALL. repeatedly over a 10 minute period so I made 3 videos of it to document the problems and show Nissan exactly what's going on. They have provided me with a rental car for the day while they figure it out. This has been an on and off again issue for the past 5000 miles or so on my car, which is a 2014 base model 370z with about 36k miles, with Stillen HFC, Nismo S-Tune Y pipe, and AAM Short tails I have video I will post up once it gets uploaded to my google one drive. If anyone watching the video has had identical problems please comment or post.

Chasedixon21

here is the link to the video of this god awful problem please comment/reply if you have been through this situation. I'm not sure but I believe Capstone law is filing a class action suit for this issue as well as the CSC failure which I have already been through once on this car as well so any comments or reply's will be useful for them

https://drive.google.com/file/d/0B9P...ew?usp=sharing

Business Kat

Has your car gone into mode at all?