Help new member
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Help new member
I have a 79 F-150 4x4 with 400 and a C6. I don't have spark out of the coil. I tried a new coil, ignition module, and a magnetic pickup. I also replaced the wiring harness with a painless performance however I had the problem before. I would like to know what and how to read the signal from the magnetic pickup to the module, and from the module to the coil. The wires all have continutity from end to end. One of these is not working. Please help!!!!!
Last edited by Torque1st; Mar 24, 2005 at 08:59 PM.
Fleet Owner
Joined: Aug 2001
Posts: 29,941
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From: Drummonds, TN USA
It could be a bad cap or rotor.
It could be a failed ignition module.
It could be a bad ground.
It could be corrosion damage.
'79 sounds like duraspark II system - the box is about 14 bucks. Try one from another truck and see what it does.
It could be a failed ignition module.
It could be a bad ground.
It could be corrosion damage.
'79 sounds like duraspark II system - the box is about 14 bucks. Try one from another truck and see what it does.
Moderator
Joined: Jan 2001
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From: Virginia
This is how your system should be hooked up. Make sure you have 12 volts on the coil + and the red wire going to the module with the key in run.
Also make sure your black wire going to the distributor is there and is good. It bolts to the distributor and is the ground for the whole system.
Also make sure your black wire going to the distributor is there and is good. It bolts to the distributor and is the ground for the whole system.
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Still need help
The ignition module is new as well as the stator. It is all wired correctly and I have good grounds. But I still not get spark out of the coil. According to MSD the coil is good. I have coil spark wire unhooked trying to see if I have spark out of the tower. Does anybody know how to read signal with a multimeter from the stator to the module and the module to the coil? Thanks any help is appreciated.
Last edited by jfk79ford; Mar 27, 2005 at 08:49 PM.
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I had a bad coil. I guess MSD was wrong. I used a test light and attached ground clip to ground and put tip on negative side of coil and the light flickered when cranking so I replaced the coil and presto. Thanks for your help everyone......
