Gas Pedal Delay

6SPD_FTW

OK....the throttle plates close on the 370Z under what conditions??

I was under the impression that the ONLY time they closed was at idle and during deceleration. That's what VVEL is all about I thought. Throttle plates remain WIDE OPEN all the time and the amount of air getting into the cylinders is controlled by the VVEL, hence no real need for throttle plates (other than for emissions).

My 6-spd S/P has never had these symptoms. I noticed a delay in power only when the slip light illuminates because it detects slip. Otherwise, mash it to the floor in any gear and it instantly goes.

Late,
Trav

ChrisSlicks

Bingo.

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m4a1mustang

Interesting. I need to get a video of my car... If I give it throttle in 1st or second gear under 3k RPM it just bogs down and literally does nothing for a second or two... then it goes.

It's kind of funny because it throws me forward as I'm bracing for acceleration (it starts to go, then stops... waits, then goes). It's NOT VDC I can tell you that.

Been toying with putting the stock intakes back on the car (and exhaust if necessary) to see if any of those are causing a problem, but I should probably just get the thing tuned.

Now that I think about it, it behaves as if the car isn't picking up any fuel... I wonder if it could be a pickup issue?

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ChrisSlicks

I've never experienced that outside of fuel starvation. Were you running at or below 1/4 tank?

If it was VDC you would have constant speed (no acceleration) but if it is fuel you will get deceleration as if you had lifted completely off the gas in gear.

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m4a1mustang

Probably not fuel starvation, then. I don't think it's VDC because the light never turns on and I'm pretty sure I can replicate the problem with it off. I'll have to do some testing this weekend and report my findings!

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Daishi

I noticed this started happening after I installed the injen intakes. I think you need to get the car tuned because I used to have the same problem. The A/F ratios were way off on my setup and now its 98% gone cept when it gets rediculously hot out but thats going to happen either way when its 90 out.

dlmartin81

You described my symptoms EXACTLY....and I have no mods at the moment. But it's not all the time. I think the hotter the car is (and even outside temps) the more likely it is for me to experience it.

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IcedZ

Agreed. Today was another rather hot day (96+) and my oil temps crept to about 225F with NORMAL driving. I decided to get on it, and sure enough, until about 3k RPM's it does next to nothing. I decided to mess around a little, so I turned Synchro mode off. It seemed to help. I turned it back on, and it was also better. However, there was a bit of traffic, so It may have cooled down just 5deg or so. So I am quite certain that oils temps are to blame (at least in my case). 225F or so causes some SERIOUS throttle issues.

flashburn

Even on my automatic, I haven't seen where it isn't opening up. What I have seen is when I've floored it and it doesn't downshift immediately, but of course this only happens when not in Manual mode. This only happens under certain conditions (not exactly sure what conditions though).