Gas Pedal Delay

m4a1mustang · 09-08-2010, 01:59 PM

Quote:

Originally Posted by L8N8

^^sucks you had to give up the car to fix the issue.

For whatever it's worth, I haven't done any performance mods yet. The car is bone stock with this acceleration issue. I'm going to be giving it to Nissan for a couple days this week so they can troubleshoot it. If they can't do anything with it and no one has found a fix on this site by then, I'll press on with new intakes and possibly a tune. If nothing by then, I'll seriously consider going the route the previous poster has just taken.

I had intakes, exhaust, and a tune and it didn't make a difference at all.

Quote:

Originally Posted by 6spd

gotcha, how do you like the 'stang? things beast and a half i hear.

I get what you describe real bad in first gear, even before the vdc would, i assume, kick in, as well as low rpm 2nd and 3rd.

I love it. It's an amazing car.

IcedZ · 09-08-2010, 09:34 PM

Quote:

Originally Posted by m4a1mustang

That's not really what the issue many of us are describing, though. Of course there's going to be a signal delay, but with this, the engine responds, bogs for 2-3 seconds, then surges forward.

What would happen to me is I'd give the car throttle and initially get put back in my seat, only for the car to STOP accelerating, bog for 2-3 seconds, all while lunging me forward because I was bracing for acceleration... then all of a sudden it'd violently take off again. It felt more like fuel starvation or TC/VDC cutting power more than anything else, although there's no evidence to suggest that's the case. That's what it feels like, though.

Bottom line is I solved the problem... I bought a new car. :/

Exactly. It is almost completely unresponsive for 2 or so seconds. The thing that I don't get is that it's very intermittent. Sometimes it's just a little unresponsive for that time, other times it almost doesn't do anything at all, then sometimes it's just fine! Hopefully you'll have better luck dealing with them! Please let us know if you do. I've been brushed off.

m4a1mustang · 09-08-2010, 09:37 PM

Quote:

Originally Posted by IcedZ

Exactly. It is almost completely unresponsive for 2 or so seconds. The thing that I don't get is that it's very intermittent. Sometimes it's just a little unresponsive for that time, other times it almost doesn't do anything at all, then sometimes it's just fine! Hopefully you'll have better luck dealing with them! Please let us know if you do. I've been brushed off.

I was thinking maybe it was some sort of torque management, but there's no way it could be that considering how violently it lays down the power once it decides to go.

Anyways, I don't have to worry about it anymore since I sold the Z. :/

I certainly hope you guys can come to a solution. I know just how annoying (and dangerous) it can be.

christian370z · 09-08-2010, 06:19 PM

I don't have delay like most here have, mine just feels like it does not have a sense of urgency when I step on the gas. The power is there, but it does feel like it is because the power does not come on instantly. The car is going to Seb at SpecialtyZ next wednesday for a full tune so I hope he can work on the throttle map and perk it up a bit.

I look forward to seeing the results of the tune!

6spd · 09-08-2010, 07:27 PM

Quote:

Originally Posted by christian370z

I don't have delay like most here have, mine just feels like it does not have a sense of urgency when I step on the gas. The power is there, but it does feel like it is because the power does not come on instantly. The car is going to Seb at SpecialtyZ next wednesday for a full tune so I hope he can work on the throttle map and perk it up a bit.

I look forward to seeing the results of the tune!

that is probably the most reliable thing to do. that way everything works in harmony without any tom-foolery.

I drove around earlier and i don't think i have a problem at all when the vdc is off, instant power on demand, but a cable throttle i would still prefer.

JayYoon · 09-08-2010, 11:52 PM

3-5 secs is a long time... r u sure thats the right amount of delay?

IcedZ · 09-09-2010, 01:13 AM

Quote:

Originally Posted by JayYoon

3-5 secs is a long time... r u sure thats the right amount of delay?

For me that's slightly exaggerated. It's more like 2 seconds (though I can't speak for everybody). However, I have been in situations where it feels like an eternity!

cossie1600 · 09-09-2010, 12:19 AM

Are some of you kidding me? 2 sec delay? Geez. That's right, there is a 2 sec delay in a car that runs 13 sec in the quarter mile.

m4a1mustang · 09-09-2010, 07:08 AM

Quote:

Originally Posted by cossie1600

Are some of you kidding me? 2 sec delay? Geez. That's right, there is a 2 sec delay in a car that runs 13 sec in the quarter mile.

Its no joke man. Its not a throttle response delay... throttle responds fine but immediately after gassing it the car bogs for 2-3 seconds before violently surging ahead. It feels like VDC is coming on and cutting power almost immediately after you get on the throttle. It happens anywhere below 4,000 rpm.

cossie1600 · 09-09-2010, 07:48 AM

Quote:

Originally Posted by m4a1mustang

Its no joke man. Its not a throttle response delay... throttle responds fine but immediately after gassing it the car bogs for 2-3 seconds before violently surging ahead. It feels like VDC is coming on and cutting power almost immediately after you get on the throttle. It happens anywhere below 4,000 rpm.

You are driving a high revving V6, it's going to feel sluggish at the low RPM. My Prius felt stronger than my Z down low, but that is definitely not the case as verified by my datalogger

IcedZ · 09-09-2010, 08:12 AM

Quote:

Originally Posted by cossie1600

You are driving a high revving V6, it's going to feel sluggish at the low RPM. My Prius felt stronger than my Z down low, but that is definitely not the case as verified by my datalogger

Again.. it's *NOT* that. When the car is "normal" it's a linear feeling. With this problem, it's not linear in the least bit. You go from starting to accelerate, to *NO* power. Zip, nada, nothing... to an explosion. Like previously stated, it almost feels like VDC is kicking on for a sec.

m4a1mustang · 09-09-2010, 08:56 AM

Quote:

Originally Posted by cossie1600

You are driving a high revving V6, it's going to feel sluggish at the low RPM. My Prius felt stronger than my Z down low, but that is definitely not the case as verified by my datalogger

It's not that AT ALL.

You get on the throttle... the car responds instantly and takes off, only to immediately cut power, throw you forward in your seat (since you're bracing for acceleration), bog for a good 2-3 seconds, then all of a sudden violently take off again. It's got nothing to do with the fact that this is a high-revving V6.

cossie1600 · 09-09-2010, 11:29 AM

Quote:

Originally Posted by m4a1mustang

It's not that AT ALL.

You get on the throttle... the car responds instantly and takes off, only to immediately cut power, throw you forward in your seat (since you're bracing for acceleration), bog for a good 2-3 seconds, then all of a sudden violently take off again. It's got nothing to do with the fact that this is a high-revving V6.

if the engine actually stops and sounds quiet, its fuel cut due to starvtion.

oil temp doesnt effect the car as much as you think. i have a datalogger, car can accelerate just as fast at 270 oil temp vs 220

IcedZ · 09-09-2010, 08:09 AM

Quote:

Originally Posted by m4a1mustang

Its no joke man. Its not a throttle response delay... throttle responds fine but immediately after gassing it the car bogs for 2-3 seconds before violently surging ahead. It feels like VDC is coming on and cutting power almost immediately after you get on the throttle. It happens anywhere below 4,000 rpm.

PERFECT short description.

flashburn · 09-09-2010, 07:03 AM

So odd... I was doing a bunch of 0-60 runs last night to get my E-Tune done and didn't notice any real lag (maybe under half a second). I'm wondering if its tied to specific ECU's? I'm using the 1EA4B ECU.

09-08-2010, 06:19 PM	#4 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 433	I don't have delay like most here have, mine just feels like it does not have a sense of urgency when I step on the gas. The power is there, but it does feel like it is because the power does not come on instantly. The car is going to Seb at SpecialtyZ next wednesday for a full tune so I hope he can work on the throttle map and perk it up a bit. I look forward to seeing the results of the tune! __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

09-09-2010, 07:03 AM	#15 (permalink)
flashburn A True Z Fanatic Join Date: May 2009 Location: Central Florida Posts: 1,884 Drives: '12 Corvette GS 6M Rep Power: 20	So odd... I was doing a bunch of 0-60 runs last night to get my E-Tune done and didn't notice any real lag (maybe under half a second). I'm wondering if its tied to specific ECU's? I'm using the 1EA4B ECU. __________________ Current Ride: 2012 Chevrolet Corvette Grand Sport Centennial Edition Carbon Flash 6M Previous Ride: 2009 Nissan 370Z Sport Platinum Graphite 7AT

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