Kill switch and engine start button wiring

[TimV]

Cps = camshaft position sensor?

[Piwoslaw]

Alex, I also have a commonrail turbodiesel in my Peugeot 307, and I cut not the cam, but the crankshaft sensor. I seem to remember that cutting the signal from the cam sensor would not kill the engine, or would add some other unneeded complications, and that is why I had to try my luck with the crankshaft sensor.

In the case of my HDi, cutting the crankshaft position sensor kills the engine without reseting the ECU, but I do get a message about oil pressure being too low.
It logs an error code, but the engine can still be bump- or key-started. The error code can later be deleted with an OBD tool.

[alexander.foti]

Originally Posted by TimV

Cps = camshaft position sensor?

Sorry, yes crank position sensor.

[alexander.foti]

Originally Posted by Piwoslaw

Alex, I also have a commonrail turbodiesel in my Peugeot 307, and I cut not the cam, but the crankshaft sensor. I seem to remember that cutting the signal from the cam sensor would not kill the engine, or would add some other unneeded complications, and that is why I had to try my luck with the crankshaft sensor.

In the case of my HDi, cutting the crankshaft position sensor kills the engine without reseting the ECU, but I do get a message about oil pressure being too low.
It logs an error code, but the engine can still be bump- or key-started. The error code can later be deleted with an OBD tool.

Sorry, I wasn't clear on the first post, I did the crank position sensor too. You are right, on mine the car would still run with the CPS disconnected.

I get no warnings, but Mercedes are odd in that they don't have low oil pressure lights or sensors for that matter.

Like yours I can bumpstart or restart with the newly installed starter button. Seems like a good solution.

[alexander.foti]

Did 51.1mpg trip average over 32miles with a 12mph average (central london)today utilising P&G where possible, and stopping engine at traffic lights.

Seems to be a winner!

[teoman]

I also have an MB but an 2003 automatic (w163 ml350).

Would adding a kill switch benefit it at all? Or is it just asking for trouble and entering a world of pain (à la Lebowsky)?

[alexander.foti]

Originally Posted by teoman

I also have an MB but an 2003 automatic (w163 ml350).

Would adding a kill switch benefit it at all? Or is it just asking for trouble and entering a world of pain (à la Lebowsky)?

You could use it, BUT, you will not be able to restart without putting the car pack into park, as the starter lockout from the gearbox will prevent it.

I haven't read how the automatics deal with it with stop/start fitted from the factory, but I believe they decouple the gearbox internally at stop.

[teoman]

Automatics also start in neutral. But it is still a problem. No bump starting... and i doubt that i can switch it back to drive and try to get it to start again.

[teoman]

I am examining my torque app values, and at idle, if i have the engine in gear (automatic transmission) then FC is 44 cc/min but if I switch to neutral it becomes 38 cc/min. I can coast in neutral, but if i were to completely shut off the injectors, that would amount to quite some savings.

[alexander.foti]

Final install pics: