Gas Pedal Delay

IcedZ · 05-31-2011, 09:16 AM

Quote:

Originally Posted by 2ndChance

Just drove the car and experienced this lag for the first time.. I was about 20mph then suddenly floored it, and then a good 1.5 seconds passed before the car started to move.. It happened many times and specially when I'm going slow in a curve or something.

I think it has to do with the VDC... will try again tomorrow in manual mode vdc off.

There are 45 other pages of good information. I recommend you at least skim them before contributing.

Davey · 05-31-2011, 09:44 AM

Quote:

Originally Posted by m4a1mustang

We've already determined that VDC is not the culprit, at least in the lag that we are all experiencing. VDC intervention is usually very easy to detect -- not only do you see the light flashing, but you can feel the car cutting power, applying brake, etc.

Did you ever have VDC kick in but not see the light? I've been searching around to see if it continues flashing after it interferes for a specific amount of time or what. Can't find any info.

Reason I ask is, I did lose power taking a right-hand turn from a dead stop with the car cold, tires cold, etc. and I could maybe see VDC coming on because I did tip in pretty aggressively, but I did not see the light.

m4a1mustang · 05-31-2011, 09:55 AM

TBH I'm not sure. If I was doing something that really required VDC to kick in quite a bit I was usually not concerned with looking down at the cluster. And it's been months since I've had the car so little details like the VDC light are very much a blur to me now.

IcedZ · 05-31-2011, 10:20 AM

Quote:

Originally Posted by Davey

Did you ever have VDC kick in but not see the light? I've been searching around to see if it continues flashing after it interferes for a specific amount of time or what. Can't find any info.

Reason I ask is, I did lose power taking a right-hand turn from a dead stop with the car cold, tires cold, etc. and I could maybe see VDC coming on because I did tip in pretty aggressively, but I did not see the light.

I removed the fuse...

Davey · 05-31-2011, 11:07 AM

Quote:

Originally Posted by IcedZ

I removed the fuse...

I'm not proposing that VDC is the culprit for the throttle delay issue, if that is what you mean.

I'm trying to determine if I experienced the problem in that scenario or if I could have just missed the VDC blink (or if it was some other issue.)

I'm thinking it was VDC. I hope.

6spd · 05-31-2011, 11:40 AM

i have vdc kick in often without the light coming on.

Davey · 05-31-2011, 12:33 PM

Quote:

Originally Posted by 6spd

i have vdc kick in often without the light coming on.

OK, cool. Thanks!

RandyD · 05-31-2011, 01:48 PM

Quote:

Originally Posted by Davey

Did you ever have VDC kick in but not see the light? I've been searching around to see if it continues flashing after it interferes for a specific amount of time or what. Can't find any info.

Reason I ask is, I did lose power taking a right-hand turn from a dead stop with the car cold, tires cold, etc. and I could maybe see VDC coming on because I did tip in pretty aggressively, but I did not see the light.

I also had this one happen... i was on a slight uphill - needing to merge out onto a road with speedy traffic... disappointing..

jloomis13 · 08-15-2011, 10:31 AM

I have a stock 09 touring sport and have been experiencing this EXACT issue for about a month now. This is normal day to day driving, have never raced the car and only JUST turned over 13k miles. Everything you guys say describes what I feel exactly. I've gone to one dealership that didn't do anything. Will go to the dealership that changed out my ECU on Friday.

Has anyone had any luck with finding out what is going on? It was so bad last night I couldn't even get the car to go up my driveway....granted, its a little steep, but it's a 370 for ?#$^@ sake!!!

IcedZ · 08-16-2011, 08:56 AM

Quote:

Originally Posted by jloomis13

I have a stock 09 touring sport and have been experiencing this EXACT issue for about a month now. This is normal day to day driving, have never raced the car and only JUST turned over 13k miles. Everything you guys say describes what I feel exactly. I've gone to one dealership that didn't do anything. Will go to the dealership that changed out my ECU on Friday.

Has anyone had any luck with finding out what is going on? It was so bad last night I couldn't even get the car to go up my driveway....granted, its a little steep, but it's a 370 for ?#$^@ sake!!!

That's why I traded it in.. I stalled on a steep driveway and hit the guy behind me. Nissan was NOT helpful. @$$holes.

DrEvil · 08-16-2011, 10:19 AM

Quote:

Originally Posted by pompey

any way to fix this problem?

After getting the uptune, my throttle responce was much faster and crisper.

DIGItonium · 08-16-2011, 06:43 PM

Summers are always bad. Typically the exhaust would drone very loud, and the car barely has the power to move when I give it more throttle. However, something changed since the accident in March. The shop replaced a broken intake box, and that's all they touched in the engine bay. This summer is much hotter than the last, but I have not encountered the throttle lag as much since the accident.

All I've done different so far is open up the fang vents. I can drive all over the place in 90F temps with the A/C running, and I hardly encounter a situation where the car falls flat on its face while making a left turn or running across the street. Amazingly the car has been pretty pleasant to drive.

What's interesting is that the oil temps hardly touch 220F as well. Even if it does, it literally cools down while sitting at the traffic light on a hot summer day. That's weird because I don't remember the oil temps doing that.

Cheap mod... open up the fang vents. [shrugs]

m4a1mustang · 08-16-2011, 06:57 PM

FWIW I ran with open fang vents and it didn't do jack for my problem.

DIGItonium · 08-17-2011, 01:18 AM

Quote:

Originally Posted by m4a1mustang

FWIW I ran with open fang vents and it didn't do jack for my problem.

Ha! So it was definitely not related, but I guess it's safe to assume 220F is when power starts cutting. Yet, I felt the lag past 190F. I will test low end response and heatsoak after getting the car back.

IcedZ · 08-17-2011, 09:09 AM

Quote:

Originally Posted by DIGItonium

Ha! So it was definitely not related, but I guess it's safe to assume 220F is when power starts cutting. Yet, I felt the lag past 190F. I will test low end response and heatsoak after getting the car back.

I felt the lag as low as 180 - 190 oil temps. Don't think it was oil.

05-31-2011, 09:55 AM	#693 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	TBH I'm not sure. If I was doing something that really required VDC to kick in quite a bit I was usually not concerned with looking down at the cluster. And it's been months since I've had the car so little details like the VDC light are very much a blur to me now. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

05-31-2011, 11:40 AM	#696 (permalink)
6spd A True Z Fanatic Join Date: Aug 2009 Location: South Florida Posts: 3,001 Drives: Q50RS Rep Power: 25	i have vdc kick in often without the light coming on. __________________ -Jay- jonathanjamesphotographer.com

08-16-2011, 06:43 PM	#702 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Summers are always bad. Typically the exhaust would drone very loud, and the car barely has the power to move when I give it more throttle. However, something changed since the accident in March. The shop replaced a broken intake box, and that's all they touched in the engine bay. This summer is much hotter than the last, but I have not encountered the throttle lag as much since the accident. All I've done different so far is open up the fang vents. I can drive all over the place in 90F temps with the A/C running, and I hardly encounter a situation where the car falls flat on its face while making a left turn or running across the street. Amazingly the car has been pretty pleasant to drive. What's interesting is that the oil temps hardly touch 220F as well. Even if it does, it literally cools down while sitting at the traffic light on a hot summer day. That's weird because I don't remember the oil temps doing that. Cheap mod... open up the fang vents. [shrugs] __________________

08-16-2011, 06:57 PM	#703 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	FWIW I ran with open fang vents and it didn't do jack for my problem. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

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08-15-2011, 10:31 AM	#699 (permalink)
jloomis13 Base Member Join Date: May 2010 Location: Raleigh, NC Posts: 18 Drives: 16 Silver Nismo Tech Rep Power: 15	I have a stock 09 touring sport and have been experiencing this EXACT issue for about a month now. This is normal day to day driving, have never raced the car and only JUST turned over 13k miles. Everything you guys say describes what I feel exactly. I've gone to one dealership that didn't do anything. Will go to the dealership that changed out my ECU on Friday. Has anyone had any luck with finding out what is going on? It was so bad last night I couldn't even get the car to go up my driveway....granted, its a little steep, but it's a 370 for ?#$^@ sake!!!