MSefi.com read only forum (Jan.15,2018)

To measure the actual spark energy with sensors on the HV side is requiring instrumentation that I think no DIYer has at home. If you work at a fancy lab you may be able to borrow a HF power meter equipped with high frequency HV sensors for voltage and current However , there is an easier and less a...

The RPM signal, 1 pulse per ignition event, is pin 1 on EDIS 4,6 and 8. In FORD-lingo it is called PIP. This is the rpm signal to MS. Use the MSconfig as per the manual . EDIS pin 2 can be used to drive a tacho. Pin 2, on some EDIS , has in adition also some modulation with eror codes. Never use pin...

Hi, As to the "lambda heaters", of the NB type. The heater is connected to 12 V as soon as the car is running, many wire it in // with the fuel pump which makes sense. The heater itself is a PTC resistor ( Positive temp coefficient resistor) When at say 20 C it draws around 3 Amps and heat...

Hi. I have squirted a number of M103 engines that had KE Jetronic. The best part was dumping the KE Jet stuff! Felt great I have used normal type injectors with the conical spray pattern. Cars run great! PM me with an email adress, I will send engine pictures and also well tested msq. And while you ...

Hi,
You are most welcome. Maybe you can, after having sorted uour install out, send a mail to the SiteAdmins and ask then to make an addtion on this in the Megamanual.
I have seen the behaviour on all EDIS 4, 6 and 8 that I hav used ( most be around 20 by now).

Best egards

Klotzakk

I think your initial install was correct If you hook upp EDIS on a test bench that can start at low rpms ( I did) you will notice that the EDIS in standalone ( ie no SAW) will start att almost TDC and as rpms go up towards 400 the ignition point will approach 10 BTDC. So , install it as per the book...

It is quite uncommon for EDIS to spook you. 1 VR sensor polarity swop. You have tried , but no change. 2 Check wiring. Some of us have managed to wire the EDIS backwards. Pin 1 is identified on the module. 3 Some ( if not all) EDIS have problems when spark crct resistance is too low. Each plug/wire ...

Yes, it will.
Just make sure that you get the polarity right, the schematic in this thread says it all.

Best regards

Heribert

Hi. I have stripped a few original looms from Ford and the PIP/SAW wires are bundled together and shielded by alu foil wrapping. The alu foil is connected to pin 7 at the EDIS plug and not connected at the other end. I have done some MS/EDIS installs and use the same principle , ie a 2 core shielded...

Hi To me the throttle body looks like a part from a KE Jet equipped M102 or M103 MB engine. If so, the "TPS" in the picture is not a TPS. It is a switch where one contact is closed at closed throttle and another is closed at WOT. Check with a DVM. And running MS without a TPS is possible, ...

My US$ 0,02´s worth, to be sure. Hook everything up as per schematic . To positively identify the battery supply wire going to the PWM valve, unplug the valve and switch on the ignition. Use a Voltmeter or simply a 12 V 5 W bulb. Connect one end of this to the chassis Probe the plug , the pin that ...

Hi The objective of the manifold-pressure referenced fuel pressure regulator is to keep the differential pressure over the injector constant. This will certainly help you tune a VE table. At low pressure="high vacuum"= low load you will need short opening times of the injectors. If you use...

Hi. MY MB knowledge drops of fast after M130 around 1972. MB M113 is a bit to modern for me, but anyway. I GUESS thetwo pugs per cylinder are not firing at the same instant but that one fires 5 to 10 crank degrees after the first. If so, you will loose some power if you fire both plugs together. Bes...

Philip Lochner has solved the issue with two EDIS 6 on a V12. Requires an interface unit to phase the SAW signal to the second EDIS module Find Philip and ask him, I even think he has an adapter kit for sale. But for a V8, there is really no need . Use an original EDIS 8 and run it as per manual- th...

EDIS 6 ia a bit tricky. By setting it up on my test bench and spinning the VR wheel slowly by hand watching the plug pair firing I determined : EDIS module pin 10 = Spark A EDIS module pin 11 = Spark C EDIS module pin 12= Spark B So on a MB straight six with 1-5-3-6-2-4 firing order the A coil (EDIS...

and Random Hero. You write Q I have played with the sensor to wheel gap, adjusted rpm trim pots on the board and played with the next pulse tolerance in the software. I got the 2nd module to run correctly by adjusting the sensor gap a bit closer, but the other modules still cease to fire at certain ...

I really do not know. I guess there are differences between some EDIS modules in the way abnormal spark circuits affect the error codes and the PIP signal, but I have no facts on this of a general nature. But I HAVE tried benchtesting an EDIS 8 with copper HTwires and zerRplugs. Sparking would cease...

If you accept the concept of wasted spark, EDIS is a s good as it will ever get. And you get a rock steady rpm signal to run the MS on, with no knobs to fool around with. Timing jitter is eliminated and the ignition curve is made in MS and sent to EDIS over a simple wire connection (SAWsignal) And E...

A module can of course have intermittent fault but IMHO EDISis about as good as stuff gets. Some ideas: EDIS ( at least the ones I have bench tested) are sensitive to spark circuit ( ie plugs and leads) resistance. There is some kind of circuitry on the coil driver side that diagnoses if spark over ...

The main function is to create a Low Pass filter together with the capacitor that is conected to ground.. High frequency disturbances will be attenuated and thus not influence the AD reading. A second less obvious function is to limit the input current at input overvoltages into the MS. Each ADchann...