MSD Ready to Run Problem - Ford Muscle Forums : Ford Muscle Cars Tech Forum
 
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Old 06-02-2012, 07:16 PM Thread Starter
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MSD Ready to Run Problem

I have a 69 Mach1 that we recently acquired which has a 428 Cobra Jet. I purchased an MSD Ready to run distributor model 8595 as well as new MSD 8.5mm wires and new plugs for the Mach. I could never get the new distributor to run. I am positive I have the firing order correct and after multiple attempts to install the distributor without running success, I decided to reinstall the old distributor. It fired right up and runs very smooth. I called MSD tech and they told me that partiuclar distributor needs 12 volts to the coil to run. After checking the voltage to the coil with my multimeter, I am only getting 4 volts to the positive post of the coil. Any suggestions on how to correct the problem would be appreciated.
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Old 06-02-2012, 08:46 PM
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Re: MSD Ready to Run Problem

I seems that you have that common issue of the Mustang . It comes from the factory with a ''fat'' pink resistor wire under the dash . this wire lowers the voltage after the car has started from 12v to around 6-8 ...I believe. This is so the points in the system won't burn out. I had to go under the dash and splice in a new wire after removing the pink wire. This gave me 12v to the MSD ready to run.
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Old 06-03-2012, 08:44 AM
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I agree with Greg. Run a new wire from the switch to the coil and it should run. Mine works flawlessly.

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Old 06-03-2012, 10:20 AM Thread Starter
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Re: MSD Ready to Run Problem

Perfect. That's what I figured I needed to do. Thanks for the help!
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Old 06-03-2012, 04:00 PM
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Re: MSD Ready to Run Problem

Good luck! Pics of your ride would be cool also
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Old 12-10-2018, 04:03 AM
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Re: MSD Ready to Run Problem

I'm having the same problem with the same distributer in my 67 galaxie.can I see if this is the problem by running a direct wire from the pos terminal to the + terminal on the coil?
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Old 12-10-2018, 08:55 AM
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Re: MSD Ready to Run Problem

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Originally Posted by cherokeechief7 View Post
I'm having the same problem with the same distributer in my 67 galaxie.can I see if this is the problem by running a direct wire from the pos terminal to the + terminal on the coil?
That's what I would do. Remember that to kill the engine you will have to detach the wire.

Putts drives a 1965 customized Galaxie. Rebuilt 390, 4100 electric choke on a Performer, MX, AC, PS, PB w Scarebird front discs on Cragar 17" S/S.
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Old 12-10-2018, 12:35 PM
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Re: MSD Ready to Run Problem

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Originally Posted by cherokeechief7 View Post
I'm having the same problem with the same distributer in my 67 galaxie.can I see if this is the problem by running a direct wire from the pos terminal to the + terminal on the coil?

Your car should have the same resistor wire as in the OP's situation. Bypass the resistor after the ignition switch and all should be good.

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Old 12-10-2018, 01:27 PM
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Re: MSD Ready to Run Problem

I just put in the 12v relay from Pertronix. The resistor wire stays intact (although at this point why would I go back to points?). Rocketman makes a relay that you can switch, a lot of cougar guys are running those. Or, like everyone else said, just bypass the resistor wire.
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