transmission acting strange, please help. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

.jrmyrmx · 10-27-2008, 02:18 PM

car is a 1990 240sx with a redtop sr20/transmission and an aftermarket clutch.

my transmission is acting very strange lately, and it is making the car undrivable. when i stop at a stoplight the car will stall because the transmission never fully disengages. in order to shift back into 1st gear to start driving i have to turn the car completely off, otherwise the lever wont go into first. it is also very hard to shift through the other gears. when i bought the car it had a shitty megan short shifter which might be part of the problem.

i just started college so i dont have the time or tools to work on it myself so i will have to take it to a shop. i dont want to walk into a shop without knowing exaclty what the problem is so if anyone has had this problem or knows wht is wrong that would help me a lot.

thanks,
jeremy

SoguRacing · 10-27-2008, 02:20 PM

maybe bad syncros or loose linkages.

aznpoopy · 10-27-2008, 02:25 PM

clutch not disengaging properly =

bad clutch hydraulics (master slave & lines)
screwed up clutch fork
screwed up pressure plate

easiest to check in that order

Goose · 10-27-2008, 03:46 PM

I also think it's a clutch issue

.jrmyrmx · 10-27-2008, 07:06 PM

thanks guys, ill check the master and slave lines first and go from there.

jspeedm · 10-27-2008, 08:43 PM

check to see how much you can move the release fork. if it moves very easily, the pivot ball might be broken and your release fork wont get enough leverage to fully disengage the clutch. i had the same problem.

nis-son · 02-05-2009, 01:02 PM

not to jack a thread but mine has the same problems and it makes a noise when im coming off first gear like a grinding noise could it be related to these problems?

eklips3 · 02-05-2009, 05:28 PM

when you change the clutch the clutch pedal itself sometimes needs to be adjusted.
same thing happened to me when i changed the clutch in a RB25 tranny. the gears would not go in or would take forever to do so .

but if you want to adjust your clutch then there should be a 10mm bolt above the clutch pedal that you simply tighten or loosen . im sorry i cant explain it very clearly but thats what resolved my problem.

10-27-2008, 02:18 PM	#1
.jrmyrmx Leaky Injector Join Date: Apr 2008 Location: Denver, CO Posts: 145 Trader Rating: (1) Feedback Score: 1 reviews	transmission acting strange, please help. car is a 1990 240sx with a redtop sr20/transmission and an aftermarket clutch. my transmission is acting very strange lately, and it is making the car undrivable. when i stop at a stoplight the car will stall because the transmission never fully disengages. in order to shift back into 1st gear to start driving i have to turn the car completely off, otherwise the lever wont go into first. it is also very hard to shift through the other gears. when i bought the car it had a shitty megan short shifter which might be part of the problem. i just started college so i dont have the time or tools to work on it myself so i will have to take it to a shop. i dont want to walk into a shop without knowing exaclty what the problem is so if anyone has had this problem or knows wht is wrong that would help me a lot. thanks, jeremy

10-27-2008, 02:20 PM	#2
SoguRacing Post Whore! Join Date: Nov 2007 Location: (714) Age: 38 Posts: 2,967 Trader Rating: (23) Rides Gallery: SoguRacing Feedback Score: 23 reviews	maybe bad syncros or loose linkages. __________________ Pre Tune Checkup! Compression,LeakDown,Vacuum Test $80. Cams Install: $180

10-27-2008, 02:25 PM	#3
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 43 Posts: 5,013 Trader Rating: (1) Feedback Score: 1 reviews	clutch not disengaging properly = bad clutch hydraulics (master slave & lines) screwed up clutch fork screwed up pressure plate easiest to check in that order

10-27-2008, 03:46 PM	#4
Goose Join Date: Oct 2008 Location: New Mexico Age: 39 Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	I also think it's a clutch issue

10-27-2008, 07:06 PM	#5
.jrmyrmx Leaky Injector Join Date: Apr 2008 Location: Denver, CO Posts: 145 Trader Rating: (1) Feedback Score: 1 reviews	thanks guys, ill check the master and slave lines first and go from there.

10-27-2008, 08:43 PM	#6
jspeedm Nissanaholic! Join Date: Jul 2008 Location: SoCal 562 Age: 45 Posts: 1,680 Trader Rating: (26) Feedback Score: 26 reviews	check to see how much you can move the release fork. if it moves very easily, the pivot ball might be broken and your release fork wont get enough leverage to fully disengage the clutch. i had the same problem.

02-05-2009, 01:02 PM	#7
nis-son Leaky Injector Join Date: Apr 2008 Location: queens ny Age: 34 Posts: 89 Trader Rating: (0) Feedback Score: 0 reviews	not to jack a thread but mine has the same problems and it makes a noise when im coming off first gear like a grinding noise could it be related to these problems?

02-05-2009, 05:28 PM	#8
eklips3 Zilvia Addict Join Date: Apr 2008 Location: Calgary Canada Age: 34 Posts: 626 Trader Rating: (3) Feedback Score: 3 reviews	when you change the clutch the clutch pedal itself sometimes needs to be adjusted. same thing happened to me when i changed the clutch in a RB25 tranny. the gears would not go in or would take forever to do so . but if you want to adjust your clutch then there should be a 10mm bolt above the clutch pedal that you simply tighten or loosen . im sorry i cant explain it very clearly but thats what resolved my problem.