Fuel starvation, who else?

Mike

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

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NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968

KingZee

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.

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Focus ST

sig11

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.

cossie1600

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?

travisjb

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

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2009 370Z #104
*For Sale*

cossie1600

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.

ocfoilist

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.

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Proud owner of a new 167.2 inch, 3278 lb baby Z!
Stillen CBE & G3 Intake // Stillen Lightweight pulley // Stillen Oil Cooler // Goodridge Braided Stainless Steel Brake Lines // ACT HDSS Clutch& Alum Flywheel

Elysium

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.

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2013 GT-R black edition.....with mods to come
2010 370Z stillen supercharged.....will be missed

travisjb

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

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2009 370Z #104
*For Sale*

ChrisSlicks

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

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

travisjb

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2009 370Z #104
*For Sale*

cossie1600

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.

phunk

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.

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Synack

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.

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NO LONGER OWNS A 370
Turbo FR-S

ChrisSlicks

LOL, let me drive.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms