No start 1986 Ford E-350
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I am spending hours on testing everyday. The coil tests OK. All my grounds zero out and my multimeter show no breaks in the wires. I really think my problem is coming from the Ignition control module. I tested the green/yellow wire for continuity and it zeros out. Yet I am NOT getting a pulse on the negative side of the coil when cranking. It's a constant 9v with the ignition on and the red wire (positive) is a constant 12v.
It looks like the previous owners went thru the same steps I did to attempt to get it running. They threw new spark plugs and wires at it, a distributer and a new ICM and coil (all from autozone) in there. It's got a blue tab on the back of the ICM. I was thinking what if their problem all along was the ICM and they got the wrong color box. I was reading on some other forums that you have to match the color tab on the back of the ICM. Is there any way to know which color ICM is supposed to go with my car so I can rule this out of not?
i am not experienced with the duraspark system but I've come to know it a lot more. Is there any other possibility for the green/yellow to not pulse under cranking? Any help is appreciated again!
It looks like the previous owners went thru the same steps I did to attempt to get it running. They threw new spark plugs and wires at it, a distributer and a new ICM and coil (all from autozone) in there. It's got a blue tab on the back of the ICM. I was thinking what if their problem all along was the ICM and they got the wrong color box. I was reading on some other forums that you have to match the color tab on the back of the ICM. Is there any way to know which color ICM is supposed to go with my car so I can rule this out of not?
i am not experienced with the duraspark system but I've come to know it a lot more. Is there any other possibility for the green/yellow to not pulse under cranking? Any help is appreciated again!
Cargo Master
Joined: Oct 2016
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From: Northern VA
This system relies on ground? I would be sure the distributor housing, engine block, and module ground wire are all solidly connected. Again, the jury is still out on starter solenoid, ignition switch under dash, and ballast resistor!! Check them
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Joined: Jan 2001
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From: Virginia
I am spending hours on testing everyday. The coil tests OK. All my grounds zero out and my multimeter show no breaks in the wires. I really think my problem is coming from the Ignition control module. I tested the green/yellow wire for continuity and it zeros out. Yet I am NOT getting a pulse on the negative side of the coil when cranking. It's a constant 9v with the ignition on and the red wire (positive) is a constant 12v.
It looks like the previous owners went thru the same steps I did to attempt to get it running. They threw new spark plugs and wires at it, a distributer and a new ICM and coil (all from autozone) in there. It's got a blue tab on the back of the ICM. I was thinking what if their problem all along was the ICM and they got the wrong color box. I was reading on some other forums that you have to match the color tab on the back of the ICM. Is there any way to know which color ICM is supposed to go with my car so I can rule this out of not?
i am not experienced with the duraspark system but I've come to know it a lot more. Is there any other possibility for the green/yellow to not pulse under cranking? Any help is appreciated again!
It looks like the previous owners went thru the same steps I did to attempt to get it running. They threw new spark plugs and wires at it, a distributer and a new ICM and coil (all from autozone) in there. It's got a blue tab on the back of the ICM. I was thinking what if their problem all along was the ICM and they got the wrong color box. I was reading on some other forums that you have to match the color tab on the back of the ICM. Is there any way to know which color ICM is supposed to go with my car so I can rule this out of not?
i am not experienced with the duraspark system but I've come to know it a lot more. Is there any other possibility for the green/yellow to not pulse under cranking? Any help is appreciated again!
Post Fiend
Joined: Feb 2008
Posts: 5,831
Likes: 121
From: St Albert, Alberta
I am spending hours on testing everyday. The coil tests OK. All my grounds zero out and my multimeter show no breaks in the wires. I really think my problem is coming from the Ignition control module. I tested the green/yellow wire for continuity and it zeros out. Yet I am NOT getting a pulse on the negative side of the coil when cranking. It's a constant 9v with the ignition on and the red wire (positive) is a constant 12v.
It looks like the previous owners went thru the same steps I did to attempt to get it running. They threw new spark plugs and wires at it, a distributer and a new ICM and coil (all from autozone) in there. It's got a blue tab on the back of the ICM. I was thinking what if their problem all along was the ICM and they got the wrong color box. I was reading on some other forums that you have to match the color tab on the back of the ICM. Is there any way to know which color ICM is supposed to go with my car so I can rule this out of not?
i am not experienced with the duraspark system but I've come to know it a lot more. Is there any other possibility for the green/yellow to not pulse under cranking? Any help is appreciated again!
It looks like the previous owners went thru the same steps I did to attempt to get it running. They threw new spark plugs and wires at it, a distributer and a new ICM and coil (all from autozone) in there. It's got a blue tab on the back of the ICM. I was thinking what if their problem all along was the ICM and they got the wrong color box. I was reading on some other forums that you have to match the color tab on the back of the ICM. Is there any way to know which color ICM is supposed to go with my car so I can rule this out of not?
i am not experienced with the duraspark system but I've come to know it a lot more. Is there any other possibility for the green/yellow to not pulse under cranking? Any help is appreciated again!
Next is to test the dist pick up. Range should be 790 to 850Ω anything outside this replace the pick up. Orange and purple wires at dist plug. And yes while cranking you should have the neg on the coil drop out continuity to ground when testing be sure you unhook the feed (red) to the coil.
You need to check this during crank and run can be checked with ING in run and jumpering the starter relay. If you have the second small stud on the relay hooked up be sure to disconnect it during the run crank test.
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Ended up being the ignition switch under the dash. In combination with broken wires I found in the engine bay, I appreciate the help everyone. Finally got it running!
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