tranny ?... a tiny bit more tech... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13silady · 11-17-2004, 01:46 AM

ok a friend of mine recently just got his car back after a sohc to sohc swap(90)...he told me his clutch feels wierd.. so i drove it... once it grabs, it grabs fine except for the heavy shaking. we firgured this out to be the driveshaft is misaligned slightly and is causing some vibration... no biggy. the problem is the clutch pedal has super play in it and it sometimes hard to get in gear... i figured his sycros were going bad or might just need a new TOB...
we were on the freeway today and anytime we go above 4k his car loses power and shuts off... i figured this to be his speed sensor isnt hooked up and the speed cut-off is on the 4th and 5th gears (because the wires are cut and he has no speedo)...theres 2 sensors that arent hooked up, on is a sensor that plugs in directly into the tranny... then theres a sensor that has wires, then it goes into a clip sensor (male to female) that the wires were cut too... one of my questions is does anyone know what these sensors are and what colors the wires are, and which colored wire goes to which plugs? the reason i ask is because its not that the wires were cut, but actually pulled out of the clips...

and if anyone has any insight to what the other problems could be it would be of much help... we are also going to try to rebleed his clutch tomorrow, and i know that the clutch pedal has an adjustment bolt on it so im going to do that for hime tomorrow also...

any help is appreciated.. just wanted to know before we throw his car up on the lift tomorrow...

idlafie · 11-17-2004, 02:03 AM

Download a Factory Service Manual from here & you can check the color wires yourself.....
http://www.ffdet.com/members/rich/Nissan/nissan.htm
http://www.zeroyon.com/TheSite/techservice.html

If the wires were pulled out of the clips, provided you still have the clips, you can put the wires back into the clips. Will require a pin tool to open up the clips though. You can make one out of metal wire...the type that comes with the rubber Bosche windshield wiper replacement blades. Guys that rewire SR harnesses custom fabricate a pin tool using this metal wire all the time. All you need is a small bench grinder to grind down the metal wire a bit & in a few minutes you got your pin tool.

Anyhow, hope this helps..
ID

nightwalker · 11-17-2004, 02:08 AM

the clutch system is a bitch to bleed. You might just want to bypass that dampening box that runs inline with the clutch fluid line. There are many topics on how to remove it. It will make bleeding 100x faster and easier!

If the speed sensors were not hooked up, the car wouldn't shut off, it would act more like a rev limiter/speed governor thing.

good luck.

Buffalo Daughter · 11-17-2004, 07:41 AM

i say replace the sensors that are not there if you havent already. As for the clutch pedal could be your slave that went out or your master. Check if you slave is leaking on the bottom and then well check your master if has any leaks,sometimes it could be internal.

11-17-2004, 01:46 AM	#1
s13silady Nissanaholic! Join Date: May 2002 Location: Bay Area, San Jose Posts: 1,804 Trader Rating: (0) Feedback Score: 0 reviews	tranny ?... a tiny bit more tech... ok a friend of mine recently just got his car back after a sohc to sohc swap(90)...he told me his clutch feels wierd.. so i drove it... once it grabs, it grabs fine except for the heavy shaking. we firgured this out to be the driveshaft is misaligned slightly and is causing some vibration... no biggy. the problem is the clutch pedal has super play in it and it sometimes hard to get in gear... i figured his sycros were going bad or might just need a new TOB... we were on the freeway today and anytime we go above 4k his car loses power and shuts off... i figured this to be his speed sensor isnt hooked up and the speed cut-off is on the 4th and 5th gears (because the wires are cut and he has no speedo)...theres 2 sensors that arent hooked up, on is a sensor that plugs in directly into the tranny... then theres a sensor that has wires, then it goes into a clip sensor (male to female) that the wires were cut too... one of my questions is does anyone know what these sensors are and what colors the wires are, and which colored wire goes to which plugs? the reason i ask is because its not that the wires were cut, but actually pulled out of the clips... and if anyone has any insight to what the other problems could be it would be of much help... we are also going to try to rebleed his clutch tomorrow, and i know that the clutch pedal has an adjustment bolt on it so im going to do that for hime tomorrow also... any help is appreciated.. just wanted to know before we throw his car up on the lift tomorrow... __________________

11-17-2004, 02:08 AM	#3
nightwalker Nissanaholic! Join Date: Mar 2003 Location: Bay area Age: 46 Posts: 2,146 Trader Rating: (0) Feedback Score: 0 reviews	the clutch system is a bitch to bleed. You might just want to bypass that dampening box that runs inline with the clutch fluid line. There are many topics on how to remove it. It will make bleeding 100x faster and easier! If the speed sensors were not hooked up, the car wouldn't shut off, it would act more like a rev limiter/speed governor thing. good luck. __________________ In life, we often cast the line of hope fishing for the best possible opportunity. Sometimes with enough effort, the things we catch are nothing short of amazing.

11-17-2004, 07:41 AM	#4
Buffalo Daughter Zilvia Addict Join Date: Aug 2002 Location: In The Depths of MorDor Posts: 764 Trader Rating: (0) Feedback Score: 0 reviews	i say replace the sensors that are not there if you havent already. As for the clutch pedal could be your slave that went out or your master. Check if you slave is leaking on the bottom and then well check your master if has any leaks,sometimes it could be internal. __________________ kick rocks.

11-17-2004, 02:03 AM	#2
idlafie Zilvia Addict Join Date: Mar 2004 Location: ..So Cal.... Posts: 940 Trader Rating: (0) Feedback Score: 0 reviews	Download a Factory Service Manual from here & you can check the color wires yourself..... http://www.ffdet.com/members/rich/Nissan/nissan.htm http://www.zeroyon.com/TheSite/techservice.html If the wires were pulled out of the clips, provided you still have the clips, you can put the wires back into the clips. Will require a pin tool to open up the clips though. You can make one out of metal wire...the type that comes with the rubber Bosche windshield wiper replacement blades. Guys that rewire SR harnesses custom fabricate a pin tool using this metal wire all the time. All you need is a small bench grinder to grind down the metal wire a bit & in a few minutes you got your pin tool. Anyhow, hope this helps.. ID