Gas Pedal Delay

m4a1mustang

Someone brought up an interesting point about the NISMO, though. If there are no NISMO owners reporting any delay issues, perhaps it has something to do with the ECU/VVEL tuning.

If I were to guess, I would think it's some sort of engine control, as I've had it happen in winter or summer, with a cold engine or a heat-soaked engine, it doesn't seem to matter.

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DIGItonium

Steve is right... everything you have described are pretty much the exact same issues I've have even when ambient temps are in the 40s.

Something is getting hot and it doesn't like it. Sometimes I wonder if the VVEL actuators are getting too hot. I burned my finger touching the actuator motor. O_o

G37 owners had this issue for a long time, but I do not recall any solutions other than the Sprint Booster suggestion. IIRC, complaints started after an ECU update to remedy the VVEL actuator clicking problem.

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tonybui

Ok guys, i have this problem and I can't read through 41 pages LOL, so what's the solution? anyone?

Econ

extend your posts per page setting and itll only be 17 pages.

hehe

umm basically just down shift then accelerate and there is no delay. The only time i notice a delay is in Auto mode on my 7at. if im in manual, i downshift to hit like 4500 rpm's and im out of there.

Also, I haven't read most of this thread so yea.

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2014 Triumph Thruxton 900
2013 Fiat 500 Abarth
2009 Nissan 370z

m4a1mustang

The trouble is you can't downshift when you're already in 1st gear trying to get away from a light.

It's not an issue of being outside of the torque curve, it's some sort of electronic issue that cuts all throttle after an initial surge. So far we have determined it's not oil temp, ambient temp, or heat soak related. It has to be something within the ECU, perhaps related to VVEL, that is causing it.

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Econ

that's weird. I have only noticed pedal delay in the higher gears.... 3 4 5

idk....

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2014 Triumph Thruxton 900
2013 Fiat 500 Abarth
2009 Nissan 370z

L8N8

Give it time, Econ, you'll notice it soon. Best opportunity for this delay to happen is in stop/go traffic in the middle of August (at least that's been my experience).
NOTE: That's 2 more people without NISMOs that have joined the gas pedal delay convo. I'm geting more and more convinced. My plan is to trade up for the NISMO at a Nissan dealer. If they happen to notice the issue with the car then I'll ask them to fix it themselves under warranty.

I love a good can of worms.

IcedZ

I think this it he first post I've read of an AUTO feeling it.

6spd

i rarely have this problem, and my temps never exceed 220 (they usually stay at 200-210). It is very difficult to diagnose this problem without the proper scan tools, which is going to require a helpful, knowledgeable dealer (is that even possible?!). There may be a correlation between the oil temps and VVEL operation, but again, nissan's scan tools are needed to read whats going on.

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DIGItonium

Let me repost the YouTube video below to show the difference in power with a "cool" and a "hot" engine. Normally this car has plenty of power to move, and it can break loose my 285 Hankooks from roll! After 15-30 minutes of driving in warm weather, I start bogging the gears like a newb as if I'm not giving enough gas to get the car moving. You can see in the video how long it takes to get the car moving in 1st and 2nd from a roll. Pitiful.

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IcedZ

I posted the same thing after DIGI did it (though I don't do the moving tests)

IcedZ

Sorry about the post bombing, guys. I also want to reiterate that I had a bad catalytic converter. They SUPPOSEDLY tested the whole exhaust system (O2 sensors, cat, and all). They said the problem was the cat. They fixed that under warranty @40k miles. Then I traded it in that week because the problem was as bad as ever. I was very hopeful off the lot, it felt amazing. But alas it came back.

Davey

Damn, DIGItonium, that video makes me sad, dude.

Is it consistently reproducible when the car is hot? I'm barely broken in and my oil temp is around 220 pretty consistently and the car still gets up and moves nicely.

DIGItonium

happened since I first got the car. I thought it was normal that the car lacked torque until things became noticeable in the summer.

I spoke with my dad's friend today, a licensed mechanic, and he suggested a few things: MAF and/or O2 sensors. The heat may cause inaccurate readings causing the ECU to cut power. I do remember the tech mentioning the rough feeling while accelerating in 3rd as fuel being cut. Why? He did not know. He thought the exhaust was making things lean, but I told him people with stock cars and new ones off the lot were experiencing the same problem.

Think there are inconsistent quality of our sensors?

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ninous26

That video is really sad. However it looks more like the car is lazy when hot like its sucking in hot air with the AC running on full blast which results in lower power. I still see the delay though.

I hope Nissan is notified of this issue and they find a way to resolve it immediately. I say convert back to using the old throttle cable.