ms doesn't see the rpm?
#1978811
12/29/15 07:56 PM
12/29/15 07:56 PM
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Joined: Feb 2003
Posts: 8,763
Andrewh
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OP
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I finished wiring up a 5.9 magnum. the distributor is a little different than stock. it has a shutter wheel in it instead of whatever is normally in a magnum distributor. based on the wiring diagram diy auto tune supplied, I wired it in with all 3 wires. common 5 volt, and then specific ground and sensing line on their shielded wire. I can see voltage changes in the sensing line. but the tuner studio software doesn't seem to see anything. I have a resistor wired in to the sensing line as well from how it was previously used. sent them an email since there is no way to call, but wondering if anyone has any ideas on what to check.
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Re: ms doesn't see the rpm?
[Re: Andrewh]
#1978894
12/29/15 09:43 PM
12/29/15 09:43 PM
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Joined: Dec 2014
Posts: 6,354 ohio
ruderunner
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ohio
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Need to see the pickup. That saud, stock magnum would have been a hall effect type sensor. If the new one is 3 wire it is likely hall effect as well.
Angry white pureblood male
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Re: ms doesn't see the rpm?
[Re: moretoys]
#1978994
12/29/15 11:45 PM
12/29/15 11:45 PM
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Joined: Feb 2003
Posts: 8,763
Andrewh
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this is the pickup. I realize it is the "cam' sensor, it worked for the old setup. trying to make it work for the new. it might just be that I don't have the right settings, or I didn't wire it right. not sure at this point. the plug. is a 3 wire.
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Re: ms doesn't see the rpm?
[Re: Andrewh]
#1979032
12/30/15 12:22 AM
12/30/15 12:22 AM
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Joined: Jan 2003
Posts: 1,482 Lake Orion, MI
goldduster318
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
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oh another tech tip is if you want to test it you'll see the hall sensor switch state when you pass a razor blade through it.
'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip
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Re: ms doesn't see the rpm?
[Re: Andrewh]
#1979034
12/30/15 12:23 AM
12/30/15 12:23 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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The Magnum of course should be a ported inj with 8 inj and not throttle body inj. Just asking to be sure and are you using the Mopar eng controller ? The Mopar ones would always use a 5 volt signal wire and then one is ground and the key on pull up voltage wire that powers the hall effect up could be from 5 to 12 volts as Mopar has used 5 , 8 , 9 and 12 volts on the key on voltage wire that powers the unit up. I dont remember which yours would have as it would depend on what controller is uses. On the Mopar controllers the crank sensor gives the RPM signal on that type. Actually on the Magnum V/8's you could unhook the dist pickup after the eng is running and it will keep running as once the PCM knows the firing order (from the cam sensor-the dist) it remembers it and keeps going through the same firing order so it does not need to look at the dist pick-up signal until the next start-up. Ron
Last edited by 383man; 12/30/15 12:31 AM.
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Re: ms doesn't see the rpm?
[Re: Andrewh]
#1981848
01/02/16 11:27 AM
01/02/16 11:27 AM
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Joined: Jan 2003
Posts: 8,097 Tulsa OK
Bad340fish
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master
Joined: Jan 2003
Posts: 8,097
Tulsa OK
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Andrew are you on Facebook? There is a Megasquirt group that I believe is hosted by DIY. There is some decent help on there a lot of it from DIY Employess and other folks from around the world.
I am using a crank trigger on mine so I am not going to be much help. I use a 36-1 wheel and a Jeep cam sensor on my 360.
Last edited by Bad340fish; 01/02/16 11:30 AM.
68 Barracuda Formula S 340
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Re: ms doesn't see the rpm?
[Re: Andrewh]
#1982587
01/03/16 11:13 AM
01/03/16 11:13 AM
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Joined: Jan 2003
Posts: 8,097 Tulsa OK
Bad340fish
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Tulsa OK
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no, not on facebook. but I did join the msextra forum. they decided that the jumpers were wrong based on the current manuals. Unfortunatly I broke some pins changing the jumpers so now am stuck till I can get replacments or a new board. Hate to hear that! Good luck!
68 Barracuda Formula S 340
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Re: ms doesn't see the rpm?
[Re: Andrewh]
#1985869
01/07/16 09:51 PM
01/07/16 09:51 PM
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Joined: Jan 2003
Posts: 1,482 Lake Orion, MI
goldduster318
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
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I got a partnumber from diy on monday for the replacement pins. Got it ordered from mouser same day. They delievered it yesterday, and I was able to replace the pins today. Tested and got 5 volts now out of the sensor line as expected. I could see rpm's on the tuner studio during cranking.
So progress. Now I have to see where the timing is. but probably won't get to it till this weekend.
Thanks for the help. Man this has been a pain. It almost makes me wish I had spent the extra for ez efi instead. Shame it's been so hard for you. I spent the bucks on the MS3 Pro...doesn't have any jumpers to set...all software. I had totally forgotten about that on the earlier/less expensive versions.
'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip
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