Progress Thread 12th Owner: My '93 Notchback Restoration & Performance Build

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Habu135

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Jan 10, 2019
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Mustang5L5

i'm familiar with penetration
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I put a used Ford coil on mine. I trust it more than some of the stuff out there right now.

mine was an accel
 

Habu135

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"Street Fire an MSD Brand". This thing has seen better days.
 

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Habu135

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If it's not the coil then the only thing remaining that I can think of is the computer is going bad? I don't know if the circuits slowing fade out or go bust all at once.
 

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
34,044
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There’s other things that I would suspect before computer. If it’s not the coil, I’d do some troubleshooting first before launching the parts cannon at the issue. Fuel pressure under load is one thing. Spark plug gap and condition of plugs. Compression test, and several others.
 
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Habu135

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I've checked all the wires while it's dark and have observed no arcing or cross fire.

The fuel pressure was set at 38 during my tune and has always remained consistent. Spark plugs are new and wires are "newer" and I had a valve job less than 1k ago.

Ill drive it to a car show this coming weekend and will be able to determine if the new Motorcraft coil solved the issue.

Good discussion.
 

Habu135

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Still doing it. It's not the coil and it's not due to the volume of fuel in the tank. So strange.
 

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Cheapskate207

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Jan 12, 2020
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Was it doing this before you got the tune this summer? I went back to read about it a noticed you had a coolant leak. What ever came of that?

Drew