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Discussion Starter · #1 ·
I was at the track yesterday to take the leash off this beast and start my journey into track driving. My instructor had me going slowly through the turns showing me where I needed to be at all points in the turn. He indicated I was ready to start taking my speed up a little. The feeling this car has is amazing, you all know how it handles, soooo stable and smooth. This is were it all started, I was keeping the throttle steady in the turns and applying more and more throttle when I was coming out of the turns. As I was rolling up the throttle when the car was straightening out and nothing happened, until all of a sudden, wham, all the throttle came at once. It was jerking the car, not the smooth exit I was getting at low speed. The instructor told me to roll on the throttle, don't apply it all at one time. I told him I wasn't, he looked at my right foot coming out of the next turn and he found out what I already knew, it wasn't taking the command for more throttle. Well, I ended the day with more knowledge about driving which was great. I have a long way to go but the journey will be fun, if I can get this taken care of. I stopped at the dealership on the way home and they indicated that while in Track mode, the car wont take the command for more throttle if it senses the car sliding or spinning the wheels. They asked if I tried taking the Traction control off, I hadn't. I thought the advantage of the different modes was to tune the car toward how you were driving it at the time, one of the many reasons I chose the C7. I don't buy the explanation they gave me. I was coming out of corners when the "no throttle response" happened. Does anyone have some knowledge about this? I'm loosing some of the faith I have in the vehicle if this is indeed how it was programmed....HELP!!
 

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What you describe sounds like the traction control kicking in. Is yours a Z51?

I'm sure others more experienced with all the driving modes will chime in shortly...
 

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There is something wrong with the car. What you describe is not the way the vette works when you are in track mode. I've been at the track three times this year with my Z51. I drive in the second track setting. As I come out of the corner, even if I give it a bit too much gas the car just cuts the power just a little. You can still be going a little sideways, and have power. Your dealer doesn't understand the car.
 

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Too bad you didn't let your instructor drive the car. Since he had track experience he may have been able to validate whether it was a traction control event or something wrong with the system.

A few simple questions that may help us understand.

Z51?
Auto or Manual?
Exact Mode the car was in?
Speed and gear at the time of the "no throttle" incident.
 

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Discussion Starter · #6 ·
Thanks for your timely replies. To clarify, I have the Z51 with an automatic. In explaining the event to the service writer at the dealership I was clear in describing the lack of throttle when I was coming out of the corner and straight setting up for the next corner. Having zero throttle at that point isn't right. Maybe if I was drifting though the corner, but I'm taking the cautious approach to learning high performance driving. So I'm not pushing the vehicle in any way. I found a back road close to the dealership that has a couple corners that duplicate some of the turns at the track. I'm wondering if the can hook a laptop to my car and I'll have the car duplicate the no throttle issue. I'm no tech but will something code if I make it happen when it's hooked to a laptop? Thanks again guys, this is great forum., I'll keep y'all informed, Kim
 

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Some OB2 scan tools can capture live data and dump it to a computer. But if your car was throwing a code your dealer would be able to recover it. It would probably be easier to see if you can duplicate it on those curves and then take your dealers tech out with you and demonstrate it. Best of luck.
 

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I'm wondering if the can hook a laptop to my car and I'll have the car duplicate the no throttle issue.
Here's what I use Amazon.com: Super Mini ELM327 V1.5 OBD2 OBD-II Bluetooth CAN-BUS Auto Diagnostic Tool for Windows & Android Torque (Blue Color): Automotive connected to my phone or Nexus 7 (with the Torque App). You can also connect via laptop.

You can check codes and record data (including throttle position).

This video will give you some ideas for how to use the Torque App for your purposes.

 
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Did you drop the air pressure in the tires before the track sessions? The tires don't have near as much grip at 30 psi as they do at 26 psi. It also takes a few laps to get the tires hot. By the third lap, my car just digs into the track and pulls so hard.
 

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Discussion Starter · #10 ·
Thanks möbius, the app looks great, I'm ordering the plug adapter. It will be nice to show them data on a corner I found close to the dealership that does the same thing as on the track. There has to be a problem. I can't believe that after you come out of a corner, you're giving it throttle and nothing happens for 2-5 seconds, then all of a sudden it gives you all the throttle you want.

I didn't reduce my tire pressure at the track. In fact, all the guys I talked to in regards to tire pressure increase pressure a little but only after they checked pressure when the tires were warmed up.

Thanks again for all the input gentlemen, this is a great forum
 
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