Hey Guys need some help, having some issues and thought the brains of NSXPRIME could lend some thoughts to figure this out.
I just did the full auto to Manual Swap on a 1996 Coupe ODB2, but there are some bugs I need worked out.
I upgraded to a 6 speed transmission from a 2003, very low miles so It was a no brainer as you can’t find any working Auto transmissions anywhere and no parts to fix them.
I searched a ton of threads that I could find and comments in those threads, pasted together a knowledge base for me to work with.
We sourced all OEM parts for this conversion the only thing that was not OEM was the 6 foot long clutch hose from the master to the slave. And the Brand new Dual Clutch is from SOS..Exedy twin organic 425 clutch and flywheel. Since it’s such a strong diaphragm the clutch engages a few inches from the floor, tried adjusting the plunger length but it’s really low… At a dead stop it feels like the slave piston is not pushing the clutchdiaphragm very far and its feels like more effort to get the car into reverse. Driving it shifts perfect once you accept the low engagement.
After we started the car it had errors, The TCS error light and Check engine light are on.
Scanned the ODB2 and we are getting all transmission codes.
P0700 transmission Control System ( Malfunction ) indicator lamp request.
P1753, P1758, P1705, P1768
P0753 Shift Solenoid A Electrical
P0758 Shift Solenoid B Electrical
P0740 Torque Converter Clutch Solenoid Circuit Open
Also, No Reverse lights, where do I get that signal from and where would I re-route the signal to…?
(C425/6) C425/8).C499/4 to C499/3C499/11 to C425/10C425/11 Gry/WhtC425/11 to hand parking brake, these pigtails are mis-numbered or the person typing them in the thread got the numbers wrong and or colors of the wires wrong.
We purchased cams from a manual and the matching ECU and will put them in when we do the timing belt and water pump one day… as well as the throttle body and throttle cable just in case the Auto ECU would give us problems.. Other than the ECU not knowing its manual now, how can we short or trick the ECU to think everything is ok down there.
Also, the car has developed a hesitation, or miss. It is happening every 3 seconds, and is noticeable from by feeling the acceleration/deceleration when it hesitates, plus you can hear the miss in the exhaust notes.
So no Cruise Control ( cancel signal )… does it need the second Switch on the clutch pedal or brake pedal?
How does the Manual Transmission let the Auto ECU know its in reverse? What Pigtail?? C499? Or C425? And what wire/number?
When re-routing do I reroute before or after the pigtails?
I Have the paperback NSX manuals for all the NSX years in the shop, page after page tring to figure it out.
Help a Fellow NSXer out guys. Or someone in Japan that has done this swap can you reach out please.
I just did the full auto to Manual Swap on a 1996 Coupe ODB2, but there are some bugs I need worked out.
I upgraded to a 6 speed transmission from a 2003, very low miles so It was a no brainer as you can’t find any working Auto transmissions anywhere and no parts to fix them.
I searched a ton of threads that I could find and comments in those threads, pasted together a knowledge base for me to work with.
We sourced all OEM parts for this conversion the only thing that was not OEM was the 6 foot long clutch hose from the master to the slave. And the Brand new Dual Clutch is from SOS..Exedy twin organic 425 clutch and flywheel. Since it’s such a strong diaphragm the clutch engages a few inches from the floor, tried adjusting the plunger length but it’s really low… At a dead stop it feels like the slave piston is not pushing the clutchdiaphragm very far and its feels like more effort to get the car into reverse. Driving it shifts perfect once you accept the low engagement.
After we started the car it had errors, The TCS error light and Check engine light are on.
Scanned the ODB2 and we are getting all transmission codes.
P0700 transmission Control System ( Malfunction ) indicator lamp request.
P1753, P1758, P1705, P1768
P0753 Shift Solenoid A Electrical
P0758 Shift Solenoid B Electrical
P0740 Torque Converter Clutch Solenoid Circuit Open
Also, No Reverse lights, where do I get that signal from and where would I re-route the signal to…?
(C425/6) C425/8).C499/4 to C499/3C499/11 to C425/10C425/11 Gry/WhtC425/11 to hand parking brake, these pigtails are mis-numbered or the person typing them in the thread got the numbers wrong and or colors of the wires wrong.
We purchased cams from a manual and the matching ECU and will put them in when we do the timing belt and water pump one day… as well as the throttle body and throttle cable just in case the Auto ECU would give us problems.. Other than the ECU not knowing its manual now, how can we short or trick the ECU to think everything is ok down there.
Also, the car has developed a hesitation, or miss. It is happening every 3 seconds, and is noticeable from by feeling the acceleration/deceleration when it hesitates, plus you can hear the miss in the exhaust notes.
So no Cruise Control ( cancel signal )… does it need the second Switch on the clutch pedal or brake pedal?
How does the Manual Transmission let the Auto ECU know its in reverse? What Pigtail?? C499? Or C425? And what wire/number?
When re-routing do I reroute before or after the pigtails?
I Have the paperback NSX manuals for all the NSX years in the shop, page after page tring to figure it out.
Help a Fellow NSXer out guys. Or someone in Japan that has done this swap can you reach out please.
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