Gas Pedal Delay

DIGItonium

With outside temps getting cooler I am not experiencing this problem as often compared to the summer temps that exceed 100F everyday.

There was once instance where I made a brief stop at Walgreens, went back out, started it up, and responsiveness came back. Try briefly shutting off the car and starting it back up to see if the problem goes away. I think it resolved the issue momentarily.

Does anyone experience jerking feeling (versus smooth and progressive) when gradually pressing the throttle down to the floor? It can be easily tested in 3rd gear. When it happens, giving it more gas in 1st feels like rough clutch engagement. Then in 2nd I quickly floor it briefly, and it doesn't push me back in the seat. It's like I went from 2nd to 6th.

I think we need to keep pouring in complaints to NNA.

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RCZ

I have been experiencing this problem as well, but it seems like its related to heat because the car doesnt do it when its 180 oil temp or below.

IcedZ

I agree as well. I can't replicate the problem at night. I won't know what it's like during cooler weather for another month or 2.

m4a1mustang

The engine doesn't cut. It's still running. It just feels like a fuel starvation event... that's the best way I can describe it.

All I know is some cars experience this, some don't. For those of us that do (or did) it's very annoying and sometimes dangerous.

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WarmAndSCSI

Somebody needs to log the throttle plate position while this is happening.

I know on the Evo X, you can log the accelerator position separate from TPS - lets you know what the ECU is actually doing to limit throttle.

I'm guessing this won't tell you anything if what I've learned about the VVEL system is true - you'd have to be logging some other value that tells you how much valve lift the ECU is requesting of the VVEL system.

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IcedZ

Do you know of an affordable system that will allow me to do this?

L8N8

Hotter weather does make the issue worse but I've had the delay happen on a morning where it was no warmer than 60 F.

The ONLY time that I don't get this problem is in the first 15min after I start the car. After that, the delay is there every time I hit the gas.

DIGItonium

I wonder if the G37 community still has or still has similar issues. All I remember was the complaint about not using the ester oil causing throttle response problems with VVEL.

Although VVEL is neat-o and keeps the torque band flat I wouldn't mind switching to the VQ38HR from the 380RS. I never had throttle response issues with the 350Z other than the transmission killing the fun. Nowadays when I'm in the passenger seat of a 350Z, I'm usually pinned to the seat at low revs... something I miss

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christian370z

Can't a good tune add some low end torque to the car's power band? I was under the impression that there is a bit of headroom to make some more torque down low which would be a great asset as the VQ37 is a bit gutless down low.

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oro

We suffer from the same crap. Accelerate - Pause- Launch.

6spd

no, a honda is gutless down low. the z is good down low, but nothing to write home about.

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Zeto

6spd

ive been driving around all morning here in south florida, 90+ degree heat, 210 oil temps, vdc off, and no problems at all. power on demand, as long as the gear and rpm were appropriate. to me, vdc is such a buzz kill with its throttle cutting that ive decided to only turn it on when the temps outside are real low, when it rains, and on the highway.

now i dont know if vdc has anything to do with this problem, as some of you say you have experienced he problem even with vdc off, but it may be that. or it may be operator error, vvel, or some other problem. Until we get a cooperative dealer or tuner to tell us what is going on, we're left with our thumbs up our asses.

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-Jay- jonathanjamesphotographer.com

WarmAndSCSI

I experienced this first hand today since I had the Z to myself... I'd downshift from 7th to 3rd or 4th and punch it as it was shifting into the destination gear, and it would result in a 1 second pause or so before power delivery really kicked in. I don't know if I want to just buy an Osiris tuner and tune out the lag, or if one of the modules would be worth my money.

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6spd

i personally would rather have a tune than lose the ability to better modulate the throttle, which i would expect from a chip that goes WOT in a shorter pedal press.

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-Jay- jonathanjamesphotographer.com