Also, one of the interrupter / shift assist modules I have works with a delco electronic ignition distributer and makes the distributer go to base timing. It does this in a pulsating pattern that...

Darn, it was the bypass wire I was considering. But you are right about the check engine light. Didn't even think of that but now recall the light being on when I was setting the base timing.

I have some 5 volt relays in stock. I was trying to stay away from relays. It, it would be simpler than the other circuit. You know what happens when you turn loose an E.E. On an electrical issue...

Thanks for the idea on the relay. Is the "stall saver" a property of the ecm?

Well, it was a great idea while it lasted...

I guess it would make sense that the ECM would figure that an idling engine is not knocking...

Any other ideas on how to use a direct 4 volt input...

Hmm...knock sensor input looks interesting. The boat has no knock sensor, but if that input causes the timing to retard, that could be a great way to do the shift...

Anyone know the required...

That's great! Now, if I had the pinout for the 7747, I would be set.

That would be great. I have a 16146299. I have not found a complete pinout for that ecm yet. The shift interrupter put out 4 volt pulses during the shifts there is a switch on a mechanical linkage...

I guess I forgot a detail in my description. It should say " when the drive is shifting, the interrupter pulses the negative lead of the coil.
The engine runs now, I just need to get the shifter...

Thanks Brian,
the current interrupter hold the negative lead of the coil to ground preventing the coil from firing. I am getting error codes on the ECM complaining that the ignition circuit has a...

Yes, a, it could be as simple as a couple of transistors as well.

basically, the ECM sends out a 5 volt signal to the distributer when it wants control of the timing. The shift interrupter sends...

You are correct on the "incompatibility". The company that makes the shift interrupter have another model that is compatible with the delco "EST" troupe distributer. The company I purchased the EFI...

I have an interrupter circuit that is designed to interface with a deco efi distributer. This is NOT meant to be connected to a distributer with an ECM. When used with the EFI distributer, the shift...

Thanks,
the boat has a shift interrupter circuit that momentarily grounds the coil to make the engine "stumble". This circuit requires the coil to be fed with a current limited source. This is the...

I would like to get a schematic for the internals of the ignition module. That way I can know what to expect signal wise when I look with a scope.

Greetings,
anyone have a schematic for the delco ignition module?

I purchased aTbi system from affordable fuel injection to replace the carburetor on my boat. I did this the same time I replaced...

Thank you Six.

i should have a bunch of 2732's laying around.

Greetings,
what EPROM is in a 16146299? I need to make a backup ecm for the boat. Yes, I could .peel the sticker off the existing EPROM, but if I need to return it to the company I purchased it...

Thank you to all that replied. I modified the blue tooth box a bit and the idle is now unaffected. The "red devil river" and "aldl droid" combination is fabulous. Now I can fine tune the boat engine....

You are correct. The ground is needed. I got a note from the maker of the blue tooth interface. He said pin B is the control pin. I can try to see if pulling that pin will still give me data and not...

One other question. Do you know of a comparison chart to detail the differences between the 288 and 747?

I will look for a 747. In any case, you are correct about the unit being modified. The guys from "Affordable Fuel Injection" sent it as part of the package I purchased from them.

I am am looking...

Thank you for the adx file.

This ECM was sold to me as part of a retrofit kit from "affordable fuel injection". Guess having a salvaged ECM is what makes it " affordable".

I have now had a...

Thank you,
that seems to be the case. Looks like the red devil river USB interface has the 10k resistor that puts the ECM on diagnostic mode.
i am looking for the way to disable it.

Greetings,
just got the red devil river connected to my gm ecm and am connecting to it with the aldldroid app. The monitoring is good, but the strangest thing happens when I connect to the red devil...