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My car jerks on take off after Willall TF and DF.


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#1 GT-Ricer Posted 25 April 2010 - 01:48 AM

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Last week I changed fluids in both my diffs and transmission using Willall R35 product. It is now impossible to smoothly move off the line no matter how I try to feather
the accelerator. My car does three little jerks everytime I take off!

Only if I am pointing downhill and it starts rolling forward by itself at idle, can I smoothly accelerate and there is no "bunny hop".
Otherwise it is "three hops and go" every time! Alteranatively, if I just stomp on the gas, it forgets to hop three times too.

I cannot detect any other "benefit" (?) in my daily driving so I hope it's been worth losing my warranty over this little exercise....
Hopefully it will prove it's worth on the track.

Has anyone tried adjusting the clutch settings to get rid off this light swich "on-off-on-off-GO" response from the tranny after filling with Willall fluids?



#2 jaykkub Posted 25 April 2010 - 02:00 AM

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I'm running OEM fluids and this happens normally on my car. I spoke to my GTR tech at Nissan and he said if I wanted I could have him adjust the settings so it doesn't jerk anymore. I plan on doing that during my 18k service. It's like I don't know how to drive a manual trans. car :cheers:


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#3 GT-Ricer Posted 25 April 2010 - 02:19 AM

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View Postjaykkub, on Apr 25 2010, 06:00 PM, said:

I'm running OEM fluids and this happens normally on my car. I spoke to my GTR tech at Nissan and he said if I wanted I could have him adjust the settings so it doesn't jerk anymore. I plan on doing that during my 18k service. It's like I don't know how to drive a manual trans. car :cheers:

It didn't jerk with OEM fluids, but it did hesitate during 3000RPM launches, as they all do due to boost lag.
This three-hop jerkiness is definitely new.



#4 jaykkub Posted 25 April 2010 - 02:23 AM

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View PostGT-Ricer, on Apr 25 2010, 03:19 AM, said:

It didn't jerk with OEM fluids, but it did hesitate during 3000RPM launches, as they all do due to boost lag.
This three-hop jerkiness is definitely new.

yeah it doesn't happen all the time with my car, usually when it's on auto mode (or at least it seems that way). My GTR tech mentioned changing some clutch points to fix it. I tend to notice this happening when my car has sat idle for a long time (overnight).


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#5 dukegtr Posted 25 April 2010 - 02:26 AM

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it does with me, mine only has 3k miles and it's been doing it since i bought it. Just can't get a smooth take off


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#6 alphan Posted 25 April 2010 - 02:34 AM

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i have used willall too. it  does the same.and it shifts slower now.i will use oem oil agaim.they say because it s thick it will slow your car.



#7 nico Posted 25 April 2010 - 02:35 AM

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very interesting.... hope this isnt the case with ALL willall fluid equipped cars


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#8 Dave@GotboostPerformance Posted 25 April 2010 - 02:39 AM

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Mine does the same with the Wilall. When I get the trans good and warm, (like above 190 degrees), it gets much better, but when it's cold it is very annoying. I feel, (and probably appear like) a teenager learning to drive a clutch for the first time. My dealer was of no help adjusting clutch capacity and touch points. I'm just waiting for Cobb to make clutch and touch point adjustment available on the AP which will come very soon, and I'll screw with the settings myself. :cheers:


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#9 Martin Donnon Posted 25 April 2010 - 03:33 AM

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With any type of fluid that does this, stock, Willall whatever, set the transmission up to 'creep' and the problem will go away.
Some of the 2009 cars dont have any creep built into them with factory setting, something that the earlier transmission software of the 2008 had right out the box :cheers:



#10 GT-Ricer Posted 25 April 2010 - 04:49 AM

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View PostMartin Donnon, on Apr 25 2010, 07:33 PM, said:

With any type of fluid that does this, stock, Willall whatever, set the transmission up to 'creep' and the problem will go away.
Some of the 2009 cars dont have any creep built into them with factory setting, something that the earlier transmission software of the 2008 had right out the box :cheers:

Thanks Martin, that makes sense, if only life was so simple, but more might be needed.

On a level ground my car does creep forward quite readily and smoothly, but if I try to go forward beyond this slow creep, it hops two or three times.
The only exceptions are if the car is on a steepish hill pointing down or if I stab the accelerator hard and it bolts.
I drive into my garage using only the idle creep and brake, especially close to the back wall!

Isn't this the same as what you mean by "creep" setting?

If this is not what you mean by factory-set "creep", will any more slippage setting be limitted to the FIRST gear or will it affect the speed
at which the tranny changes in all other gears ie. will the clutch "slip-in" all the gears instead of rifle-bolt snapping them in?

I would sure hate that, as it will soon ruin the clutch on the track and kill all launch times.



#11 Goodwood Posted 25 April 2010 - 06:06 AM

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View PostGT-Ricer, on Apr 25 2010, 06:49 AM, said:

Thanks Martin, that makes sense, if only life was so simple, but more might be needed.

On a level ground my car does creep forward quite readily and smoothly, but if I try to go forward beyond this slow creep, it hops two or three times.
The only exceptions are if the car is on a steepish hill pointing down or if I stab the accelerator hard and it bolts.
I drive into my garage using only the idle creep and brake, especially close to the back wall!

Isn't this the same as what you mean by "creep" setting?

If this is not what you mean by factory-set "creep", will any more slippage setting be limitted to the FIRST gear or will it affect the speed
at which the tranny changes in all other gears ie. will the clutch "slip-in" all the gears instead of rifle-bolt snapping them in?

I would sure hate that, as it will soon ruin the clutch on the track and kill all launch times.
Touch Points adjustment could also be referred to as the "take up" point, the moment of initial engagement from a standstill. It has nothing to do with how hard the car shifts from gear to gear. The Capacities adjustment is for that.

Edited by Goodwood, 25 April 2010 - 06:06 AM.



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#12 DocNrock Posted 25 April 2010 - 06:21 AM

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Mine does this withe the Willall fluids, as well.  However, it only happens when the car is cold.  Once things are up to temp, this mostly goes away.  It is a minor annoyance to me, but since I track my car, I feel the added protection is worth it.


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#13 k3vkoh Posted 25 April 2010 - 07:10 AM

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Same here, the jerks happen after the Willall fluid. When the tranny is cold, it goes away once its warm. Only way to prevent it is to stomp on the gas on every green light, which is not very convenient. I believe a clutch point adjustment will fix it, which I can't since I don't have access to CIII.


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#14 ShahulX Posted 25 April 2010 - 07:43 AM

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change the touch points to +2 I think(for me modded)..stock maybe +1 on B?... I did this recently and it helps, although it still bucks a little when cold.... I changed the clutch capacities as well...  i am using willall tranny and diff fluids... I dont DD my car though.  Its worth the hopping to protect the tranny and lsd's ... assuming you track the car I guess... if you DD then definetly go to a nissan dealer and have them adjust the touch points and CC

Edited by ShahulX, 25 April 2010 - 07:51 AM.





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#15 ShahulX Posted 25 April 2010 - 07:47 AM

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#16 thebishman Posted 25 April 2010 - 07:51 AM

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View Postgotboost, on Apr 25 2010, 03:39 AM, said:

Mine does the same with the Wilall. When I get the trans good and warm, (like above 190 degrees), it gets much better, but when it's cold it is very annoying. I feel, (and probably appear like) a teenager learning to drive a clutch for the first time. My dealer was of no help adjusting clutch capacity and touch points. I'm just waiting for Cobb to make clutch and touch point adjustment available on the AP which will come very soon, and I'll screw with the settings myself. :irock:

+1.

Just waiting on the necessary AP software to be able to adjust TPs myself.

For those of you who find it really obnoxious; are you always driving in M mode? I find it helps a little especially when the car is cold.

Bish



#17 ShahulX Posted 25 April 2010 - 07:55 AM

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i always drive in Manual... in the streets, on track etc... it feels 100% natural to me now....like stickshift, i cannot remember the last time I was driving in auto, unless I am holding a bag of carryout food to make sure it doesnt spill




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#18 pi-man Posted 25 April 2010 - 08:13 AM

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I've noticed this with mine as well but only when I first start it. Once the trans temp goes over about 80F, it smooths out. The OEM fluid had a similar issue although not as pronounced. If it's really cold (i.e., winter), I just let it idle in the driveway for a bit. It only takes 2-3 minutes for the trans for warm up so it's not a big deal. I do also track the car so I'd rather have the additional protection and if I have to sit for a minute or two on startup, that's fine with me.

Once the AP has the ability to adjust clutch settings, I may play around with it a bit so I'm looking forward to that as well.  :irock:



#19 ShahulX Posted 25 April 2010 - 11:36 AM

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View Postpi-man, on Apr 25 2010, 10:13 AM, said:

I've noticed this with mine as well but only when I first start it. Once the trans temp goes over about 80F, it smooths out. The OEM fluid had a similar issue although not as pronounced. If it's really cold (i.e., winter), I just let it idle in the driveway for a bit. It only takes 2-3 minutes for the trans for warm up so it's not a big deal. I do also track the car so I'd rather have the additional protection and if I have to sit for a minute or two on startup, that's fine with me.

Once the AP has the ability to adjust clutch settings, I may play around with it a bit so I'm looking forward to that as well.  :cheers:

yea, that will be nice too... i think most Nissan dealers do it for free but only if you tell them the setting...unless your close with them




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#20 jerome88 Posted 25 April 2010 - 11:54 AM

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View Postdukegtr, on Apr 25 2010, 04:26 AM, said:

it does with me, mine only has 3k miles and it's been doing it since i bought it. Just can't get a smooth take off

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