Reason for 2k2 6-Speed Hesitation, and it's not what you might think...
 

After talking to one of my friends who drives a VR6 GTI he said he had similar problems with hesitation if he jumped into the throttle from a roll. Today he found something on a VR6 forum to fix the problem. The VR6 has variable intake runners just like our cars. They say it is the delay in the time it takes the computer to adjust the intake runners for max performance. This isn't a function of throttle by wire as we first thought. The product on the link below is supposed to ease the problem, for VR6's. Maybe someone will come up with something for us. Now I can rest a little easier knowing that this is a feature not a failure.

Thanks
Steve

Look toward the bottom at the k-Star product.
http://www.club-vr6.co.uk/news.htm

Re: Reason for 2k2 6-Speed Hesitation, and it's not what you might think...
 

newbie to the rescue. :p this could be BIG news for 6 speed owners. good job.

Re: Re: Reason for 2k2 6-Speed Hesitation, and it's not what you might think...
 

TSB TSB TSB TSB RECAAAAALLLLLLLLLLLLLL

Somebody correct me if I'm wrong here. But the intake runners only start to switch over after the RPMs get up there. 3000 or 4000?? So basically they have nothing to do with your off the line hesitation.

It's not off the line, it's from a roll. For instance I turn a corner on the street, apply a little preasure to the gas. Then I want to shift, so I apply a little bit more preasure to gain a bit more speed before the shift. Or when you are about to pass someone who is turning left. You might downshift to 4th (not 2nd or 3rd I don't want to scream past him, but wish to pick up a bit of speed) then step down on it, that is when it happens.

It's right in the 3k to 4k range too.

I don't seem to have this problem with my 02/6spd, can someone with an 02/6spd please describe the problem in detail so I can try to reproduce it. Don't forget to mention gear/speed/rpm and what you did.

It usually happens to me in 2nd, or 3rd durring a roll. Have the car running at about 3k and push the peddle down about 1/2 way. The car may hesitate then take off. The RPM may vary a bit, I'm recalling it from memory. It's not off the line, it's from a roll. Others confirmed the problem with my last post a couple of weeks ago.

Not a hesitation, but a surge
 

I haven't experienced any hesitation, but there is a surge of power between 3800-4000 RPM. I notice it most between 1/2 & 3/4 throttle. When I'm not changing the throttle position the extra surge catches me off guard sometimes and makes it feel as if the car was dragging before.

Re: Not a hesitation, but a surge
 

nah, I know what you are talking about there, but this is diff. It feels like the torque converter of an Automatic car. When you step down on an auto car just a bit, not enough to downshift, but enough to make the torque converter unlock. That feeling of hesitation (the momentum lost as the torque converter unlocks) is similar to the one I feel.

Here is my old thread, from a couple of weeks ago:
http://forums.maxima.org/showthread....threadid=90886

Re: Not a hesitation, but a surge
 

That surge of power is definatley the intake switch over your feeling. By your description swallac2, I think you've got an issue there. You shouldn't be feeling hesitations like that. Good luck tracking that one down!

When I drove the 6-speed, I noticed the hesitation from a roll, so....
What I did was just rev the motor(clutch in) to 5K and dump the clutch at a roll, it will spin a bit, but no LAG:wall:

Wait, this was on a test drive by myself....

NOT RECOMMENDED IF YOU PLAN TO BUY THE VEHICLE:laugh:

Best Wishes
JCR

So that's why my front tires are bald. THANKS FOR BREAKING IN MY CAR!!!!! :laugh:

Are you guys sure that this hesitation is not the same as the "fuel cut" hesitation/bucking found on the 2K and 2K1 models? The fuel cut on those models is caused by the ECM screwing around with the IAC valve and even though the 2K2 is drive by wire, the ECM logic might be similar to the 2K and 2K1.

Don't hold your breath for a fix from Nissan. I fought for over a year on my 2K about the fuel cut along with others before Nissan finally released the TSB for it, and I am still in dealings with Nissan over this issue. Hope the 2K2 works out better in this respect, but my confidence isn't high for that unfortunately.

Dave Z