07-21-2016, 05:52 PM
Join Date: Sep 2013
Total Cats: 6
MS3 Basic (rev) is possessed after setting up for sequential fuel .
Hey guys, I just PM'd Rev, but it looks pretty late where he is and I need a running car ASAP, so any help is appreciated. Reverant's instructions and my results are below. This is a MS3 basic in a 1993 with a 1.6.
Originally Posted by Reverant
To use sequential, you need to insert pins in positions 3Y and 3Z.
3U = Inj cyl 1
3V = Inj cyl 2
3Y = Inj cyl 3
3Z = Inj cyl 4
Also open the ECU and install a jumper on JP11, and put the jumper on JP10 the other way around (both jumpers are right behind the yellow connector, to the left).
I just got the time to try this today. Now my MS is acting very strangely. with the key set to "on" I only have a battery light on the dash (wideband gauge is off, etc) and the MS is completely unresponsive. When I turn the key to "off" the tach starts buzzing loudly at 1K RPM and the fuel pump turns on full blast. Since the only wiring I changed was the injector harness, I unplugged that in the bay. With the injector harness unplugged, I can connect to the MS only when the key is set to "off" or "acc". When I turn the key to "on" the MS dies.
cyl 1 is wired to 3U
cyl 2 is wired to 3V
I installed a pin in 3Y and 3Z and wired them to cyl 3 & 4 respectively
I installed a jumper on JP11 and and moved the bridge on JP10 from the left and middle pin, to the right and middle pin (closer to the outside edge of the mainboard)
I'm assuming that this is an issue with the jumpers, but I'm not sure how to proceed... Any help is appreciated.