no ign output from megasquirt

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ball o sketch
MegaSquirt Newbie
Posts: 4
Joined: Tue Nov 24, 2009 6:23 pm

no ign output from megasquirt

Post by ball o sketch »

im working on a honda using a stock distributor with the vr pickups. v3.57 computer running version 2.89 i bought from DIYAutoTune. i have a msd6a box for the ignition, and a msd sc coil. i have recheecked all the wires like ten times and everything seems to be wired alright. if you use the msd test method the msd box is ok. i tryed the logic probe on pin 36 out of the ecu and i got a little flash positive when i started to crank the engine over then nothing, no grounding. if anyone has any ideas what might be wrong that would super, im stuck right now.
8974Ollie
Helpful Squirter
Posts: 82
Joined: Tue Oct 13, 2009 4:35 pm

Re: no ign output from megasquirt

Post by 8974Ollie »

Check the Keyed 12v lead is hot in both the start and run position.
ball o sketch
MegaSquirt Newbie
Posts: 4
Joined: Tue Nov 24, 2009 6:23 pm

Re: no ign output from megasquirt

Post by ball o sketch »

its getting power all the time, the ecu just isn't sending a signal.
grippo
Site Admin
Posts: 286
Joined: Mon Feb 16, 2004 6:55 pm

Re: no ign output from megasquirt

Post by grippo »

During cranking are you getting an rpm on the PC gauge ? If you are getting rpm without any dips to 0 rpm, then it could be electrical; if you get no rpm or an rpm that frequently dips to 0 and then comes back up, then the ECU is either not seeing the tach input signal or just seeing it sporadically or seeing a lot of noise.
ball o sketch
MegaSquirt Newbie
Posts: 4
Joined: Tue Nov 24, 2009 6:23 pm

Re: no ign output from megasquirt

Post by ball o sketch »

the computer shows good tach with no drops to 0. it shows a steady 200 ish rpm. im thinking there is something wrong with the ms. but i hope im wrong
Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: no ign output from megasquirt

Post by Matt Cramer »

Take the lid off - what's in the Q16 slot?
ball o sketch
MegaSquirt Newbie
Posts: 4
Joined: Tue Nov 24, 2009 6:23 pm

Re: no ign output from megasquirt

Post by ball o sketch »

there is now a ign transister, and it works now. there wasn't before so im good to go now.
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