Gas Pedal Delay

BrandonT

Kenny I would think if the coolant is hot as hell going in to the radiator, and cool coming out, I would say that shows the radiator is doing its job? Either that or there is low flow, but that is probably not a radiator issue (but could be the thermostat)? Anyway I think the thermostat thing is very interesting. Was your replacement a Nissan part? What temp are they specced at?

kenny's 370z

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DIGItonium

It's interesting the 350Z doesn't have this problem. It pretty much has a nice 1:1 response.

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asdfsammich

The 1:1 feel on the 350 was always consistent and crisp. Compared to 370, it's the one thing I miss. Although, admittedly, with finesse you can coax the same response from the 370. It's just not as much of a black and white jolt like it was before. It's layered now, lols.


Tapatalk & such etc

DIGItonium

Ditto... stalled on several occasions. Lately I'm really feeling the car fall flat on it's face regardless of temps, I'll floor it in any gear and the power isn't quite there. Then there are times it goes wild and catches me off guard given the same pedal input. [shrugs]

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OMGiGOTaZ

What I've noticed is that it appears when wheels are still turned but if I straighten them out before giving it more Gas she lets loose even more than I expect sometimes

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kenny's 370z

im curious if anyone on this board has installed a csf radiator and an oil cooler if the delay is still happening in 90+ ambient when running the car hard ?

cab83_750

For reference, 60 degrees, drove 5 miles, filled up the tank, and when I tried to make a right turn from the gas station driveway, the car just wouldn't move for a few seconds. Based on my experience, pedal delay has nothing to do with temp; so I would not experiment with bigger radiator.

kenny's 370z

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UNKNOWN_370

When you guys say gas pedal delay? Are you saying delayed throttle response or reduced power output? The way this conversation is going on here is hella confusing. It's 2 topics rolled into one.

1. Throttle response is fixed with a proper intake mod.

2. Summertime engine power reduction. As long as hot humid air is flowing through the intakes? there will be some performance reduction in summer months. Would adding a bunch of cooling mods improve this sensation? Maybe? By what percentage? Most likely very small. The best mod for this problem is called spring and fall.

Price to performance, it's not the kind of mod you do unless you truly need to replace the parts spoken of. Then you go higher grade. But the money is yours and you guys can do what you like. When the sub 90 degree days return? You will also feel your HP return as well.

kenny's 370z

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DIGItonium

At first I thought it was delay, but not anymore. It's just the feeling of the throttle not opening up at lower revs. It's a completely different feeling compared to the 350Z (definitely more consistent even if it is touchy), and I guess that's what everyone's missing.

Losing power due to higher ambient temps is one thing, but the weather is much cooler now. There are times I can break the tires loose in 2nd from a roll, and then there are times I can't even get the car moving in the same gear even with VDC disabled. It is pretty inconsistent. There's this weird feeling when pressing down the pedal that the car would accelerate, but falls flat the further I press down on the pedal. The same for 1st gear. There are times it'll surge to redline, and other times I can hold down the pedal and not get the tires to spin out. I tend to get the car moving in 1st at low revs around 1-1.5k RPM, and the car ramps up real slow. I'll even floor it, and it makes no difference. Past 2-2.5k power surges, which makes it tough to get the car moving smoothly because I'll go from bogging to giving it too much gas to get the car moving.

Plus, revving in one spot just for kicks is funky. It revs up slowly compared to the 350Z when briefly punching the pedal to the floor. Anyone notice how much harder it is to manually rev match with S-Mode disabled? My time is off, and I have to hold the pedal down longer to get the car to rev when down shifting or I'll bog.

[EDIT] I'm going to check the brake switch again. I had similar symptoms a couple of years ago, added a shimmy to one of the brake switches, and the car was great fun to drive again.

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OMGiGOTaZ

Between the VDC and different shoes I wear, she's a tricky beast

But when wearing my boots, oddly she feels jussst right!

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cab83_750

For those who have been experiencing this often enough, can you try mixing your 91/92 octane premium gas with racing fuel? I am just wondering if raising the octane to 93-95 makes a difference?

One more question... Do we know if this pedal delay is country specific or worldwide? Is it just us in US?

cab83_750

Hmmmm.... I hope u r right about getting the pedal delay fixed. That delay is IMO a severe safety issue.

Keep us posted after a month.