No, this is my last time with nissan. (I have a Cube too). I have a better chance of seeing god than to get help from the nissan dealers. I am f-ing done. I hope it blows up when I drive it this weekend so I can just shove it to the dealer and let them deal with it. I wouldn't be so pissed if the problem is something that you can see or know what it is, I am currently dealing with 20 million possibility and I am not sure where to even start. I first thought it was the pedal switch, then fuel, now I found out it might be a dreaded electrical problem. The whole point of OBDII is to make things simple to track these f-ing sensors, yet it doesn't work in my situation. Go figures.

I am probably going to a dedicated race car for track (cheap one), probably a car in the low teens for autox or something. I need a car 3 days a week when the Prius isn't available.

Sorry to see it go, but I would do the same.

These kinds of problems are extremely frustrating. If you want to force the dealer into action then it might be worth opening a case with Nissan Consumer Affairs, they might be able to persuade them into a longer test drive to replicate the problem, especially if you tell them you are ditching the car if the problem can't be found.

I have done that with Nissan previously. Heck, I even went into arbitration with them on my 350. I love the car, but trust me I can't stand the cheap a-holes at Nissan. I am going to play with it once more this weekend. If it doesn't work, I am just going to give up. I already wasted a couple tanks of gas driving around trying to see what the hell the problem is by logging data and running different things. It's really hopeless as there are so many things I have to look into.

Nissan dealers are bullsh*t

i cant stand them. i brought my car in for service w TSB's and they still didnt fix my car. bunch of morons

I went in for a rattle and showed them exactly where it's coming from and both times, different dealers, absolutely ignored anything I said and tried an easy BS "fix" that had nothing to do with the location it was coming from and that I had already told them was tried and tested. Bunch of morons indeed.

I used to own an Audi and they used to just stop short of licking my balls when I'd go in for service. And just last week I took my Fiancee's civic into the Honda dealer for a TSB fix on the visor and her rear light was out so they replaced it for FREE. New visor, working light, 30 minutes at 2pm on a saturday. The car isn't even under warranty!! WTF Nissan?!

+1

Here is a DIRECT quote from the service manager on my 350. It's a sports car, they all rattle, get used to it.

When my old Mercedes had an electrical problem, the dealership gave us a new C class for a full month while they took their time to fix a problem that would only occur once a morning during a cold start. I think the BJ was an optional service they charge me down the street, but the treatment you get from Nissan is nowhere close. Heck, I got better service from my Chevy dealer....

I took my old 350 into Gwinnett Place Nissan because the seat cloth was fraying (tsb). They sent it to an outside subcontractor who subsequently backed it into a truck and bent one of my iforged rims and the rear qtr panel and bumper. They told me to deal with the sub, not their problem and washed their hands of it. Sad thing for them, I had just come back from a frontier test drive and was gonna have my wife drive the car home while I did paperwork. Not!!!

funny cus gwinnet did something similar for me with the 370z.. Hrmm guess they havnt really changed much

corporate nissan did give me a $200 gift certificate to make up for it though! said there was nothing they could do about it.

Corporate Nissan has to be the one responsible for this. Either they're not paying the dealers enough for the warranty work or just not providing enough incentive. I know the Audi mechanics would make bank and they would ENCOURAGE me to go in for service before my warranty expired. My mechanic there told me to go in and get my clutch replaced before my warranty was up just because I could...I guess enough incentive allows dealers to take advantage but then again, look at where Audi is as a company from where they used to be and where Nissan is.

Look at Lotus if you want good service. My friend bought a used Exige and the year it went out of warranty the dealer contacted him and offered to do a full engine rebuild before it expired. That's some amazing service.

This is going to be hard to hear or see, but this is what happened the last time I drove my car. My foot was steady at about 40% throttle, the car just started hesitating randomly from about 2500RPM. You can see the RPM stop and go along the way before it hit 7000, this was with my foot held at the same exact situation.

370z hesitation in 2nd gear - YouTube

Here are some things that might be helpful

#1 Cruise Control would cut out on its own
#2 On the OBD II logger, calculated load/throttle position/MAF reading all went to zero as the engine hesitated
#3 It happens at random times, AC on off, VDC on off

The problem also seem to occur more often at part throttle, less likely on full throttle.

I wonder if an animal ate some part of the wiring harness because my car sat at my friend's house for two weeks while it was getting the hitch installed.

I ran without the brake light fuse, problem was still there. I adjusted the brake light switch, so I don't think it is that. Can OBDII tool detect clutch position?

Have you had any voltage spikes that may have damaged the ecu? eg welding with the battery connected or anything like that?

Everything was done off the car, I don't think the ECU could get damage from it. I might cut the trailer wiring harness to try, but I would assume the problem would be more consistent if it was related to that.

I believe a few users have had their ECU replaced due to noise, I wonder if I just have other issues. Of course convincing Nissan to replace the ECU is a big iffy, especially if the car is only acting up when the dealer isn't driving.

Yup, I've gotten this as well. Just like Elysium said, I tend to get it coming out of corner #2 on the big track at Willow Springs (a sweeping right). It took me a little while to figure out what was happening but it's not traction control. Even at a little over half a tank it is generally reproducible. I find I have to cut the apex a little short and unwind a little earlier to avoid the situation.

I had the sending unit replaced on Monday and it seems like the problem has gone away for now. I haven't had a chance to really test it hard but there's about half tank in there now and wasn't hesitating last night when I went for a boot. I have a track day tomorrow so that will be the real test.

they usually have spares and warranty units laying around... and swapping the ecu isn't that much work... seems like something that could be tried without too much trouble

Or you can just complain about the high pitch noise coming from the ECU so that they will replace it under the TSB.

You can complaint, but they have to "verify" the noise before they would commit.

I cant find the 370z cruise control shop manual. On the 350, it says it can only cancel if it detects a brake pedal switch going, clutch switch, VDC/TCS activiated, I am not sure if any of those items can cause my car to go completely flat. I readjusted one of the brake pedal switch, so I don't think it is that. I guess i can try the clutch switch.

Our first 2 pre-production units for the race level solution are currently in the CNC right now. These will be the final "prototypes" and unless we run into an issue, we shouldn't have to make any changes or updates. So we are writing all the final CNC programs and everything as we machine these components.

By Tuesday I expect we will have each billet component of the product finished with all the CNC programs finished. Then we will fabricate the 2 pre-production units. It is built out of 4 billet aluminum components. 3 of them are welded together, 1 of them bolts up during installation. There is a machined plastic component. Electrical components, etc. By the end of the week we will have both pre-production products completely built and ready for installation. By then we will have the entire parts list and machine times in Excel, and we can set the final price.

The pre-production units will be put through installation and testing before we build the first retail batch. Before we build the first batch, we will offer nearly full disclosure and pricing so that we can get an idea of interest level, this way we know how many to build the first time around. We wouldnt want to immediately make a massive batch of 100 in-case the first consumers notice something that we didnt, and we have to make a change. However, the theory on which is operates, while somewhat complicated, is pretty dang easy to test. If a problem doesnt occur within a tank or two of street driving, and a single day on the track, then I cannot forsee any untested circumstances that could cause a problem. To be quite honest, I have absolute zero doubt at all about its performance in terms of solving the fuel starvation concerns. What I am all about testing here is making sure that nothing pops up as a problem during daily driving. I want there to be absolutely no side-effects from this product. It needs to be something you install and forget about, along with forgetting about fuel starvation.

I havent decided if I want to show pictures of it before its anodized or just wait to show it off until its 100% finished product. I will make that decision when the units are 100% built. I believe that one of the pre-productions will go straight into a test car, while the other one goes out for anodizing for photos and marketing. We also have to sort out the entire installation parts list.

We have put a lot of effort into making this a really trick part. Its taken much longer than I planned (as usual), but its coming out really nice and should be well worth it.

Another note, this current model upgrades the fuel system a bit while its in there. Along with the proper sized fuel injectors, this product will increase your fuel systems horsepower capacity to somewhere in the mid 500s to the wheels. Down the road, we will work on making a high horsepower version for those running built engines with forced induction. Currently almost nobody is in those shoes, so its not really needed.

Been over a month now, maybe 2 months now, and the replacement fuel sending units have done great for me. I can even get the car down to ZERO dots worth of gas now and it'll run. Haven't ran outta gas in forever.

LOL, let me drive.

What kind of tires?

Excellent! Thanks for keeping us in the loop. Track season is nearly over for us in the North East, 2 or 3 more races for me and then it is time to step back and re-evaluate what the car needs over the Winter to remain competitive. Provided the components don't add too much weight (doesn't sound like it) then this could be a great way to run 60 pounds less fuel for competition.

I have very highly spirited driving.... My tires have wires coming out of them.

1) That's not very smart.

2) That just lessens the issue since you have a low grip on your tire. (since you say that they are on wires)

3. Get some stickier tires and hit the track. That is the true test.

it sounds like you are talking about an entirely separate issue.

i run my Z until there are no dots of gas left just about every single tank. the car runs and drives fine.

the fuel starvation issue that this particular thread is discussing is unrelated to the calibration of the fuel level sending units and their accuracy.

we are all talking about fuel placement control inside the gas tank. when making a hard right, the gasoline shifts to the left side of the tank. the fuel pump cannot draw in the fuel momentarily until it settles and also siphons some over, so the engine starves of fuel and cuts power for a few seconds. the lower your fuel level, the more prone to this issue you become.

in some cases it can be worse. if you manage to relocate nearly every last bit of your fuel over to the left side of the tank (you could even have a gallon or two over there), the car is dead and will not run until you put more gas in it. that is because the siphon that pulls the fuel from the left side of the tank to the right side (this gas tank is divided in half by the driveshaft, shaped like saddle-bags) is a venturi that is powered by the fuel dumped out from the fuel pressure regulator inside the fuel pump sending unit. if the pump isnt pumping fuel, then the venturi dies, and there is no more siphoning action.

this can leave you stranded on the side of the road, it happened to me once. with 1/4 tank of gas according to the gauge.

no replacement sending units from nissan are going to fix this issue. this is not actually a concern of theirs. nearly all factory vehicles have this issue, in some cars it worse than others. ours is pretty bad due to some of the specifics of our fuel system layout.

but alas, i have the answer. :)

I've definitely had this problem at the track, drifting. More than a quarter tank and it just dies. No fun.



I was at the track on my Hankook's and after the session the tires had wires coming out, because I used every damn bit of tread. I have more tires on my porch.

Check this out!

http://www.the370z.com/members/resip...5538-re-11.jpg

I'd say that is almost worn out.

RE-11 slicks. Cool.

After I read through 16 pages, it doesn't seem like there's any plug and play solution available yet? I bet whoever makes it first and put in market will sell a bunch in no time.
The Z had this problem at Buttonwillow and Big willow even on stock shitty tires. Damn it...

So I've been exchanging pm's with Phunk and expressing interest to be one of the first to get his new setup. How many others are interested?

1. Elysium

I'm definitely interested as long as there isn't too much added weight.

I am ready...assuming the cost isn't astronomical.

Count me in. :driving:

My setup gets me down 9 gallons from full but sure would be nice to be able to drive it all the way down to empty or close to it... count me in if it can do that, and if he stays on track with his price target.