G4 & G28 Signals

[diesel des]

From that efi express link

*** After the pins are swapped, the red wire should be at position #2 (middle of the connector) and the purple wire should be at position #1
.
*** Slide the pin cartridge back into the plug and push the rubber boot back into place.* If done correctly the factory ECU should still function just fine.* The purpose of this pin swap is to reduce the noise that is received by the ecu on this harness by swapping the shield and signal(-) wires.

I have swapped the red and purple a few times. One way vems goes nuts and really struggles with triggers.

But it's the black wire I think is connected to the shield so I'm not sure the above description is correct.

[quattro-nick]

like the picture above post 4 (my flywheel) i weld a piece of metal in advance on the flywheel and checked the clearance of the sensor before i put the engine in the car
also swapped the pins in the connector and have no problems at all
i use red v8 coils and adjust dwelltime in vems a little bit

[quattro-nick]

are your ignition settings in vems okay?

[S2central.net]

@Dave - des is running the 3B flywheel with the matchstick size pin. Seemingly moronic is happy with such a low signal but vems sees trigger errors now and again with it.

[diesel des]

Yep vems was running fine on the last engine. Ok it's a completely different engine and flywheel but the ecu and loom is the same. No important things like the ignition settings have been changed in vems. I have just tweeked a few of the maps to get fueling right on the new engine...

[quattro-nick]

i think you only just need to enlarge your pin on the flywheel

[diesel des]

I hope so. Would hate to pull the gearbox and flywheel and not resolve this issue...

[andy10v]

People have removed the starter and welded on a new pin through the hole.

[andy10v]

Or rather a block with a hole drilled in it to slip over the existing pin.

Did you not do that on your last flywheel?

[UrS4boy]

Crank Position (G4) and Engine Speed Sensor (G28) Info - Function , Location and PNs

This *might* help with the sensor to pin spacing checks:

Crank Position (G4) and Engine Speed Sensor (G28) Info - Function , Location and PNs:

http://forums.quattroworld.com/s4s6/msgs/20986.phtml

[diesel des]

I needed to change the pressure plate anyhow as the clutch was slipping. Yea I did mod my 7a flywheel at one time through the starter hole.

So I have the gearbox out and I drilled a hole in a piece of steel and fitted it over the pin and welded it on with high nickel rods.





Then I drilled a hole in the other side of the flywheel opposite the pin to remove a similar amount of material to what I just welded on to try and keep the balance about right.

I have refitted the flywheel and fitted the new pressure plate. Just need to gap the sensors and refit the gearbox....

[diesel des]

Quick update car is back together and no more trigger errors. I will scope out the sensor to see what's happening signal level wise for completeness.

Cheers, des

[quattro-nick]

good for you !

[quattro-nick]

good for you !
picture of the new pin?

[S2central.net]

Good man Des - let us know how the latest monster clutch holds up to the full might of that EFR turbo.