Ignition Coil Cracked - Focus Fanatics
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Old 04-26-2013, 05:58 PM   #1
shamusn31
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Ignition Coil Cracked

The other day my car stalled out. The car started back up and ran rough, the car's engine light started flashing and the car broke down again. I tried to jump the car but nothing happened. Had the car towed. I replaced the crankshaft sensor and camshaft sensor. I than replaced the ignition coil, that's when I noticed the old one had a crack in it.

When I installed the new ignition coil, the car started right up with no problems. I took the car for a test drive and it was running fine. Later that evening I drove the car again and it broke down like the first time. The car would not start. I checked the ignition coil and it has a crack in the same place as the old one did.

I don't know what could be causing this if anyone knows or has had the same problem. Answers would be appreciated.


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Old 04-26-2013, 06:51 PM   #2
TerryB
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What brand did you buy ? OEM is recommended. Did you overtighten the screws ? I haven't heard about cracking issues.
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Old 04-26-2013, 07:52 PM   #3
amc49
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You definitely don't tighten it very tight. Plastic breaks you know. If using an off brand I've seen them not molded correctly on the bottom of bolt bosses to where it will not sit down flat on all four corners, needed slight flat filing to let it do so. Or else the warp as you tighten will crack it instantly. The bracket itself could be warped also.

Got a $15 Amazon no-name Chinese coil on mine, I had to file the crap out of the bottom on that one, but been on car for a very long time now. I'd guess that one would've broke on tightening it.
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Old 04-26-2013, 08:13 PM   #4
shamusn31
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I bought it from NAPA, the brand name was Echlin cost $85. NAPA said it was one of the better brands. The screws may have been over tightened. I didn't put it on so not sure. The crack is on the side closest to the engine and the liquid that is inside of the ignition oil oozes out a little and dries.
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