MSD Digital bad maybe
MSD Digital bad maybe After put on my 250hp dynotune nitrous noid I went and made acouple runs. Noticed it didn't hit very had so I pulled over and started testing. Found only the nitrous noid was opening, no fuel 
. After more testing I found that they both will open if I ground the soleniods wire at the noid basically bypassing the msd. But for some reason the nitrous noid opens but the fuel will not using the msd. The fuel noid was making alittle vibrating noise which would tell me it trying to open but maybe isn't getting a good ground. I just came in from regrounding the msd and no luck. Any ideas, all the wiring is from a 05177 maybe it's not big enough.
. After more testing I found that they both will open if I ground the soleniods wire at the noid basically bypassing the msd. But for some reason the nitrous noid opens but the fuel will not using the msd. The fuel noid was making alittle vibrating noise which would tell me it trying to open but maybe isn't getting a good ground. I just came in from regrounding the msd and no luck. Any ideas, all the wiring is from a 05177 maybe it's not big enough. 
Staging Lane
Joined: Oct 2005
Posts: 91
Likes: 0
From: GMT-10 Hours
You say regrounded the msd but did you reground the fuel noid to the msd? Maybe its a bad connection from the fuel to the msd? Bypassing the the msd maybe the wire got tweaked a certain way for it to work? Dunno just throwing some stuff out there. back to 
again.
again.
Originally Posted by JoeyGC5
Are you grounding the solenoids through the MSD? Or grounding a relay to ground the solenoids through the MSD. The MSD contacts can't support the current draw from the solenoids.
Originally Posted by jamnut
This is what it sounds like to me also.
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Verdad Gallardo Oh thats does make sense.
Here is what I have. The wot switch is grounding the relay, the msd is grounding the noids. So should I use the wot switch to ground the noids and the msd to ground the relay.
Here is what I have. The wot switch is grounding the relay, the msd is grounding the noids. So should I use the wot switch to ground the noids and the msd to ground the relay.
Last edited by 99SSLS1; Nov 14, 2005 at 12:36 PM.
Originally Posted by 99SSLS1
Oh thats does make sense.
Here is what I have. The wot switch is grounding the relay, the msd is grounding the noids. So should I use the wot switch to ground the noids and the msd to ground the relay.
Here is what I have. The wot switch is grounding the relay, the msd is grounding the noids. So should I use the wot switch to ground the noids and the msd to ground the relay.
Staging Lane
Joined: Oct 2005
Posts: 91
Likes: 0
From: GMT-10 Hours
http://www.nitrousexpress.com/Instru...ndowswitch.pdf
4th page on these instructions is the way it should be wired. Yellow is the same on the msd as it is on the nx window switch.
4th page on these instructions is the way it should be wired. Yellow is the same on the msd as it is on the nx window switch.
Originally Posted by frknlo
http://www.nitrousexpress.com/Instru...ndowswitch.pdf
4th page on these instructions is the way it should be wired. Yellow is the same on the msd as it is on the nx window switch.
4th page on these instructions is the way it should be wired. Yellow is the same on the msd as it is on the nx window switch.
Originally Posted by 99SSLS1
Dam how I get that messed up, looks like I gotta rewire it all. Thanks
Robert
Originally Posted by Robert56
Careful which wiring diagram you use. There is a 5177 and msd wiring schematic in the stickies above. I believe NOS and NX do the wiring different, so you may get confused using a non NOS diagram.
Robert
Robert
IT WORKS, all is well.
Thanks guys.