Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 M3W doesn't start anymore

An immobiliser bypass plug is available from Morgan! but i think the throttle position sensor is the way to go first as Chris99 say's

Useful checklist there Chris. If only we could make this kind of info 'sticky' on TM!

You say you can smell fuel with the plugs out but have you checked the fuel pressure at the test port on the top of the engine, it should be 58psi or thereabouts.

honestly, not - but without sparks firing i' afraid the best fuel pressure doesn't help ;-)

at the moment that's my default behaviour ;-) also without stucking the throttle ...



Fuel pump is working anytime (after ingnition on). What I'm wondering: starter sometimes works without deactivating the immobilizer via Dongle , sometimes not ...



there is a bunch of cables from/to the immobilizer, i'm afraid they are cutting more than only pump and starter .. ?

I will measure this tomorrow, using the wiring plan this is now possible.



Verified that today. The throttle position displayed in ProTune is 10%, 0,31V , exactly the values I'd seen before , where the engine was runnig properly . So that seems not to be the problem.



The ECU is 'talking' with proTune and shows no faults, what is the indicator module ??

Thanks for your help !

which cables you are bypassing ? And where you can plugin your plug ?

Or did you replace the Immobilizer modul by this plug ? Good Idea btw.... ;-)


Thorsten

You can connect an M$ Laptop with S&S Protune software installed via USB to the ECU. This allows you to read a lot of live data and to read and delete faults and warnings stored in the ECU.

But in my case , there is nothing faulty, the ECU means evrything is ok. ;-)

Darn, another computer dedicated to one thing. I have no Microsoft stuff anymore and have not missed them, but this might be an exception.

On my unit a number of circuits go into and out off the immobiliser unit via white plug.
You can see the wiring and plug unit on the wiring diagram in the M3W parts book. Page 66

The bypass plug simply rerouted the ins to the outs.

Morgan can supply this plug. Your local dealer may have some spare as I believe they are used during delivery transportat.

I had difficulty getting the right plug style, found one online finally, so probably easier to ask a dealer

It seems like that elusive part and its source should be in the parts book here on TM.