jahjah Posted June 14, 2009 Report Share Posted June 14, 2009 I can't figure out why my system isn't getting a tach signal. Could really use some help if someone has experience with direct coil control Link to comment Share on other sites More sharing options...
psu_Crash Posted June 14, 2009 Report Share Posted June 14, 2009 Where are you currently connected to for a tach signal? Stock dizzy? MSD unit or ?? The direct coil control (using the high current ignition driver I assume) has nothing to do with the tach signal. Link to comment Share on other sites More sharing options...
Komeuppance Posted June 15, 2009 Report Share Posted June 15, 2009 *cough* EDIS-4 *cough* Link to comment Share on other sites More sharing options...
substock Posted June 15, 2009 Report Share Posted June 15, 2009 quick question, are you still running the caravan ignition module in your distributor or did you reinstall the stock bridge in the distributor? Link to comment Share on other sites More sharing options...
Evil_Betty Posted June 15, 2009 Report Share Posted June 15, 2009 (edited) *EDIT* Just saw you said tach signal, not spark. Are you not getting a tach signal to your stock tach, to MS, etc?? Were you using another method for spark before? To use DCC your MS must be setup for it; I.E. you must solder a few points w/ wire under the MS board for it to use the DCC driver. I'm using DCC w/ modded Dist and MSD 8509 and no troubles starting up. -Justin Edited June 16, 2009 by Evil_Betty Link to comment Share on other sites More sharing options...
jahjah Posted June 16, 2009 Author Report Share Posted June 16, 2009 *EDIT* Just saw you said tach signal, not spark. Are you not getting a tach signal to your stock tach, to MS, etc?? Were you using another method for spark before? To use DCC your MS must be setup for it; I.E. you must solder a few points w/ wire under the MS board for it to use the DCC driver. I'm using DCC w/ modded Dist and MSD 8509 and no troubles starting up. -Justin your talking about the Jumpers for the high current circuit? that is how my board is setup. what is modded in your dist? what version of MS are you using? with MS2 3.0 i don't need a stabilizer of any kind, the ECu can read the sin wave of a vr sensor, but i'm thinking the sensor i am currently using actually sends a square wave... i'm still not too sure of that. Link to comment Share on other sites More sharing options...
slowquest Posted June 16, 2009 Report Share Posted June 16, 2009 it won't matter which signal you've got, either a square or sine wave will work the same. MS is just looking for the "crossover" point on the wave. Adjusting the pots on the MS will help "see" that crossover also. Have you tried changing the input? going high to going low or vice versa? Swapping the wires on the vr sensor will do the same thing also. Link to comment Share on other sites More sharing options...
substock Posted June 16, 2009 Report Share Posted June 16, 2009 if you still have the caravan ignition module remove it and install the stock bridge module. i'm thinking with the caravan module installed you are not receiving a proper signal for the ms to use. i am unsure of which wire will be the ground and which will be pin 24, but it will not produce a signal if it is wired backwards. Link to comment Share on other sites More sharing options...
Evil_Betty Posted June 16, 2009 Report Share Posted June 16, 2009 (edited) Yeah, I was talking about the jumpers. DCC for MS Here is how I modded my distributor :: FIP's dist. mod As mentioned above, if you have the caravan module, that may be the culprit. I'm running MS2 v3.0. Check out the Megasquirt tables sticky thread as I've put my info up there. I tried to use a MSD6a and tach adapter but could never get it to fire right; me and it didn't seem to get along. I switched to DCC and had it running within a day. We'll get you running, might just take a while. -Justin Edited June 16, 2009 by Evil_Betty Link to comment Share on other sites More sharing options...
jahjah Posted June 16, 2009 Author Report Share Posted June 16, 2009 Yeah, I was talking about the jumpers. DCC for MS Here is how I modded my distributor :: FIP's dist. mod As mentioned above, if you have the caravan module, that may be the culprit. I'm running MS2 v3.0. Check out the Megasquirt tables sticky thread as I've put my info up there. I tried to use a MSD6a and tach adapter but could never get it to fire right; me and it didn't seem to get along. I switched to DCC and had it running within a day. We'll get you running, might just take a while. -Justin so your not using the "caravan" sensor or any of that? your just using the stock sensor? Link to comment Share on other sites More sharing options...
Evil_Betty Posted June 16, 2009 Report Share Posted June 16, 2009 Yeah, I'm not using the caravan sensor. Just the stock sensor and modded exactly like the one in the link above. -Justin Link to comment Share on other sites More sharing options...
jahjah Posted June 16, 2009 Author Report Share Posted June 16, 2009 Yeah, I'm not using the caravan sensor. Just the stock sensor and modded exactly like the one in the link above. -Justin Alright, i think i'm gonna toss this caravan sensor and find a stock sensor Link to comment Share on other sites More sharing options...
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