Guy's , I'm trying to help out a couple of kids who choose megasquirt as an end of term project . They have a dyno session in two days from now , but they've got no spark and no rpm signal to ms . So , as I'm not an edis expert , I'de like to brainstorm a little with the more experianced people round here .
Scoped the VR sensor and it gives abt 1Volt AC with the typical edis waveform with the missing tooth clearly visible .
Swapping vr sensor polarity doesn't help .
With pip and saw disconnected , no spark when cranking the engine .
Spark tested by removing the spark plugs and grounding them on the engine block . With pip and saw disconnected , I should see spark at 10° right ? btw , what should pip and saw signals look like ? Any scope images available ?
Engine is a std zetec with the stock sensor and trigger wheel in stock location . Engine ran before it was megasquirted , VR sensor and trigger wheel position have not been touched .
The edis module has been tested on another car and it fires right up .
Megasquirt doens't see any rpm signal . RPM gauge goes to zero after one second .
Megasquirt functions correct on the stim . ie inj led flashing , fp relay not clicking rapidly , rpm pots functioning etc .
Led D17 "squirting" when set to display squirt instead of spark etc .
So I'm running out of options now .
Any help greatly appreciated .
Pat
Edis question
Moderators: jsmcortina, muythaibxr
PIP required
Disconnecting SAW will default the EDIS to "limp home" mode at 10deg BTDC advance. PIP is required to stay connected.
--pato
'82 Fiat Spider (MSnEDIS)
'97 4Runner
'82 Fiat Spider (MSnEDIS)
'97 4Runner
Looks like the problem is solved .
One of the contacts inside the edis connector was not secured by the plastic notch . When the connector was plugged in , it simply pushed that contact upwards , causing the module not to receive a vr sensor signal .
It's sparking now in limb home mode .
Tomorrow they'll hook up the megasquirt again .
Fingers crossed ...
Pat
One of the contacts inside the edis connector was not secured by the plastic notch . When the connector was plugged in , it simply pushed that contact upwards , causing the module not to receive a vr sensor signal .
It's sparking now in limb home mode .
Tomorrow they'll hook up the megasquirt again .
Fingers crossed ...
Pat