5mt stall revisited.

[TomsSVX]

There is only one way to wire it. Did some thinking and after some serious talking about it at reading I realize why we are stalling. Ok, first when the automatic has the TC locked it will engine brake like an MT. If a person were to toss the car into neutral while engine braking liek this, the car should stall or come close to it(thanks Bill). This means that there is a cut in fuel or air to the engine that is electronically controlled on engine braking. Once the auto pops the lock on the TC(when brakes are activated) engine will no longer brake and the ECU will turn all things back to normal. The mt does not send any kind of signal to the engine so it runs by ECU function alone. In this fact when we engine brake(downshift) it is telling the ECU to cut fuel and/or air to the engine. Now since our clutches immediately allow the trans to free fromt he engine(unlike a TC) it will let the RPM's fall too quickly. SO what we need is a way to only be able to keep the ecu thinking it is constantly in gear except when we want to start it. any ideas please post em up but right now I gotta run.

Tom

[rmjjensen]

don't ground any wires to the ECU and it'll always be in drive, clutch in or out. You don't need any sort of trick to start the car, just wire in the NSS that connects the starter wire from the ignition to the starter solenoid. That's how mine is currently set up ....it rarely stalls, but that's rarely not never.

I still think using the engine torque control during shifts would help.

[TomsSVX]

it needs to be wired to drive all the time unless you are starting it. The best way to do this is to wire it so that when the shifter is actually in neutral the car reads it as such. The "in Gear" switch inside the trans is no help because it leaves an open circuit when it is in Neutral where we would need it to be closed. Subafreak recommended a relay to make this work but since I am not familiar with the functions of relays so maybe someone else could chime in and elaborate

Tom

[rmjjensen]

you can do it with a relay, I would recommend a solid state one or a transistor to convert the switch in the trans. I did this in my experiment to eliminate stall.

But you don't need to touch the ECU to get the car to start. All you need to do is turn the motor quick enough ...literally, and the ECU will see this by position sensors (crank/camshaft), pulse the injectors, give the motor fuel/air and viola ...she's running. There's no need to give the ECU an electrical start signal ....just the starter solenoid to turn the motor. I still have NOTHING connected to my ECU to trick the car into starting. Don't believe me? Put the key in the ignition, turn it to the ON position, go and jump +12V to the starter motor and watch the car start without touching the ECU. Same as when you push start a car via dumping the clutch.

Now, what I do recommend is using that switch in the Manual Trans to avoid a high idle. Via relay you can:

pin 85 -> +12V
pin 86 -> Switch off the NSS inside the trans to read ground ONLY when in gear
pin 30 -> Ground
pin 87a -> to the ECU nuetral pin input
pin 87 -> (No Connection)

Problem is with a standard relay it's ON everytime the car is in gear ....which is 90% of the time which means extra wear on the relay. Hence a simple transistor based design would be much better.

Happy hunting for a no stall solution ...it's quite a pain.

[TomsSVX]

But that doesn't allow cruise to shut off when you want it to. Basically I only want my car to think I am in neutral when the trans is in neutral. I can also wire the bottom switch on the clutch to work along with the trans to kick off cruise control. I don't have CC but for those that want to keep it that solution wouldn't work

Tom

[rmjjensen]

Use the relay AND the switch on the clutch. The clutch switch ONLY goes to the cruise control module as a kill just for cruise. The NSS on the trans would go to the ECU.

I can get you a diagram of the cruise module and tell you were exactly you should hook it up.

I don't use my cruise control either. It's annoying as it seems to function ON or OFF and doesn't smoothly engage the throttle.