[TSGTR]

Hey all,
I tried the LC today for the first time in my 2009.. I did the trick to hold brake, hit gas, release then hit gas again, it revd to 4k. I released brake then an error message flashed on dash. I didn't have time to read it before it went away but it looked like TCM clutch over-rev or somthing like that.
I had it in RRR mode. Did I do something wrong?
I talked to my local nissan service manager about the warranty denial if you use LC, they said only if you abuse it will they deny warranties. I was a little surprised.. Any help would be appreciated.
TSGTR

 

[equisch3x]

Did it say something about your Clutch Overheating? I've had this come on twice when using launch control, try not to Rev to long.
It says something along the lines of Clutch Overheating Shut down car and wait for it to cool down.

Do you have LC1? Im assuming you do since your allowed to Rev up to 4000.

 

[Martin Donnon]

Clutch overheat will engage if you dont have the launch sequence quite correct or get too much wheelspin (in some intances).
Its not the clutches getting hot, its a warning that the system has detected slip in input versus output transmission speed.

 

[professor matt]

sorry martin could you explain what would be the correct launch sequence,as i always get the clutch overheat warning if i hold it too long waiting for the protree

i have the car in race/comfort/off

 

[MC]

sorry martin could you explain what would be the correct launch sequence,as i always get the clutch overheat warning if i hold it too long waiting for the protree

i have the car in race/comfort/off

you shouldnt hold it over 4-5 secs top... and while your holding it make sure the brake is all the way to the floor to avoid the overheat warning

to avoid this issue at the strip.. try to let the other side stage completely first then you stage to start the tree so you are more in control of how long you have to hold it

 

[professor matt]

ok so im not doing anything wrong then.i just tend to let the other guy go now when the lights turn green and then launch when im ready

 

[Ispeed]

I had this exact same message come up today, i did not launch the car just punched it from a roll i did get some wheel spin & the light flashed as it switched to second, i could barley read it.

I thought it was related to the 15-20 mph downshift to first just before.

 

[shawnhayes]

ok so im not doing anything wrong then.i just tend to let the other guy go now when the lights turn green and then launch when im ready

Must embarass the crap out of the competition.

Shawn

 

[professor matt]

not much competition at my local strip

 

[zebekias]

I can confirm that if you hold launch control for more than 4-5 seconds, you will get the overheat warning,
and the ECU will gradually drop the rpms.

you shouldnt hold it over 4-5 secs top... and while your holding it make sure the brake is all the way to the floor to avoid the overheat warning

to avoid this issue at the strip.. try to let the other side stage completely first then you stage to start the tree so you are more in control of how long you have to hold it

 

[MC]

man i got this warning today in my 2012....but i know why... i got crazy wheel spin i mean i left a black mark like i was in a old camaro or something... the car even fishtailed a bit... as soon as i came to a stop i got the light... let it sit for about 30 secs and it went away..... i circled the block and tried again..... this time i got a small tire chirp like usual and then full acceleration

ive been getting alot more wheel spin lately since adding my midpipe....but it could be a coincidence as its cooler around here and even though its warmer today maybe the surface temps are cool? i dunno but ive never spun like that before

 

[max_R35]

Same thing happened to me while playing in the rain

Clutch overheat meassage

It must be the surface you launched on or it wouldn't spin the wheels that much

 

[MC]

yeah i think its was a couple of things... i tried it twice the first time on smooth asphalt and i got wheel spin and let out of it at about 40mph.... then i did it on a rougher paved surface and i got alot of wheelspin but this time i didnt let out of it and thats when i got the warning.... i guess i should have let off as soon as it didnt feel like an instant hookup run..... but the weird thing is like i said 2 mins later i did it again in the same place and it was perfect...( but from the 2 previous tries my tires were warmed up)

oh and for everyone asking why im randomly launching my car.... i was trying out one of those GPS 0-60 timers..i'll just try it again when i go to the strip next weekend

the only time i ever got the warning before was on my 2009 when i was autoxing and redlined it on a 3 to 2 downshift............

 

[chemicalman]

I got the awd clutch overheat warning today.. no launch..just mad wheel spin in first and second with new tune. RR off.. went away as soon as I pulled over. I understand this is not actually heat related, but is it bad?

 

[shawnhayes]

I got the wad clutch overheat warning today.. no launch..just mad wheel spin in first and second with new tune. RR off.. went away as soon as I pulled over. I understand this is not actually heat related, but is it bad?

Long term mismatch of front and rear rates of spin can cause problems.

I recall somebody running a R35 on a 2wd dyno without disconnecting the driveshaft, and frying something in the drivetrain, but cannot find the video.

Shawn

 

[chemicalman]

How do I remedy it?
I kind of want to scream sideways as much as possible.

 

[shawnhayes]

How do I remedy it?
I kind of want to scream sideways as much as possible.

Disconnect front driveshaft and tolerate the error messages.

Shawn

 

[sleepdoc]

TS GTR,

Hey all,
I tried the LC today for the first time in my 2009.. I did the trick to hold brake, hit gas, release then hit gas again, it revd to 4k. I released brake then an error message flashed on dash. I didn't have time to read it before it went away but it looked like TCM clutch over-rev or somthing like that.
I had it in RRR mode. Did I do something wrong?

Yes you did. But, your car will be fine. It is a warning though.....

Please, Please, PLEASE be careful with any of the LC2 "tricks". Anyone using the "tricks" needs to be aware that if done incorrectly, you definitely can break something. Ask VegasGTR, he broke an axle using the "double brake trick"

Anyone using the "tricks" needs to be aware of what is going on before they use the tricks. Do NOT launch at too high of an RPM. Anything above 4k can be very risky. Even 4k may be too much, maybe even less depending on conditions.

It can be very difficult to launch at the RPM you desire too with these tricks, as the tach can swing straight up to over 5k in almost an instant. If you release the brake at the INSTANT the tach is swinging by 3750, you should get an excellent launch. If you release the brake an instant too late, you'll be spinning, wheel hopping, limping, or broken.

It takes a lot of practice to get it right. I was fortunate to get the practice on my black car. It handled the torture, likely a combination of luck and skill. Now that car is gone, and only safe launches have been done on my new car, as I have almost perfected the technique. Even with all that, I upgraded to the AP NIS 006 to be easier on the car.

My advice, get the NIS 006 if you want to launch hard. Even then you still have to be very careful, as it can wheel hop too. Start out low RPM's, learn the conditions and your car's behavior, adjust your TP's and CC's accordingly.

If you aren't ready for all of the above, think twice about launching hard.