Car rolls forward while in 1st gear with clutch pedal down! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

AzNCmB · 01-28-2008, 11:59 PM

hey guys, can you all help me out? My daily is having tranny problems.

History: I bought it from a friend of mine, the car is all stock, originally auto, 2 years ago, he did a 5 spd swap,new rps street clutch installed, stock flywheel resurfaced, and an spl Clutch fork pivot. He was very busy with school so only drove the car a few times a month, since he had another car to put miles on.

a year and 1/2 later, he sold the car to me, i kept it as a daily while i built my maroon ka-t s14. I drove it for 4 mothns, then slave cyl died on me, i changed it, and now months later, its having issues with going into gear, this is where i need help.

issues: with motor running, it would not go into gear, unless i shove it into gear, reverse would not go into gear at all unless i turn car off, put it in reverse and turn car on.

while car is in either 1st or reverse, with the clutch pedal fully pressed to the floor, car would want to roll forward in 1st, and backwards in reverse, rpms would stumble from 900rpm to around 600rpm, but would not die.

a friend of mine recently took the tranny off while i was away, and he changed out the t/o bearing, he re assembled it and it does the same thing.

when driving, as long as im in gear, it would drive fine, but when i go to up shift or down shift, it would be really tuff, i'll have to force it...

parts inspection:
i inspected the clutch master, and the rod that attaches to the clutch pedal, there are NO leaks anywhere, also, with a friend pushing in the clutch pedal, it does pump fluid to the slave, because the slave goes in and out, and also, the slave is bone dry, no leaks anywhere.

tranny fluid is full, and i bled the slave many of times.

my online research, i found this thread http://www.ka-t.org/forums/viewtopic...tch+engagement

guy said that his springs in his clutch disc broke, but he was on stock clutch setup which probably had over 100k miles, i doubt that my rps clutch broke with just stock n/a ka power...also, i probably have less than 50k miles on mys setup...

anyone can help? please do, all would be appricieated

ps. I am using an autozone slave cyl. i wonder if it is broken somehow, because i know rps clutches are prone to breaking slave cyls. but my question is, what other way would slave break and not show signs of leakage? same question goes for the master cyl? can anyone help??

thanks!

01-28-2008, 11:59 PM	#1
AzNCmB Zilvia FREAK! Join Date: Jan 2003 Location: NOLA Age: 41 Posts: 1,144 Trader Rating: (2) Feedback Score: 2 reviews	Car rolls forward while in 1st gear with clutch pedal down! hey guys, can you all help me out? My daily is having tranny problems. History: I bought it from a friend of mine, the car is all stock, originally auto, 2 years ago, he did a 5 spd swap,new rps street clutch installed, stock flywheel resurfaced, and an spl Clutch fork pivot. He was very busy with school so only drove the car a few times a month, since he had another car to put miles on. a year and 1/2 later, he sold the car to me, i kept it as a daily while i built my maroon ka-t s14. I drove it for 4 mothns, then slave cyl died on me, i changed it, and now months later, its having issues with going into gear, this is where i need help. issues: with motor running, it would not go into gear, unless i shove it into gear, reverse would not go into gear at all unless i turn car off, put it in reverse and turn car on. while car is in either 1st or reverse, with the clutch pedal fully pressed to the floor, car would want to roll forward in 1st, and backwards in reverse, rpms would stumble from 900rpm to around 600rpm, but would not die. a friend of mine recently took the tranny off while i was away, and he changed out the t/o bearing, he re assembled it and it does the same thing. when driving, as long as im in gear, it would drive fine, but when i go to up shift or down shift, it would be really tuff, i'll have to force it... parts inspection: i inspected the clutch master, and the rod that attaches to the clutch pedal, there are NO leaks anywhere, also, with a friend pushing in the clutch pedal, it does pump fluid to the slave, because the slave goes in and out, and also, the slave is bone dry, no leaks anywhere. tranny fluid is full, and i bled the slave many of times. my online research, i found this thread http://www.ka-t.org/forums/viewtopic...tch+engagement guy said that his springs in his clutch disc broke, but he was on stock clutch setup which probably had over 100k miles, i doubt that my rps clutch broke with just stock n/a ka power...also, i probably have less than 50k miles on mys setup... anyone can help? please do, all would be appricieated ps. I am using an autozone slave cyl. i wonder if it is broken somehow, because i know rps clutches are prone to breaking slave cyls. but my question is, what other way would slave break and not show signs of leakage? same question goes for the master cyl? can anyone help?? thanks! __________________ duh mah! wheels and suspension!