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Ignition coil

Posted: Wed Apr 10, 2019 8:45 pm
by micabarry
I've replaced plugs, wires, rotor and cap on my 91 and noticed the terminal on the coil was quite corroded. It looks original so thinking of replacing that. Amazon has an MSD Street Fire replacement for $40 and it is suppose to deliver a hotter spark over stock. Just wondering if anyone has any tips or recommendations before I jump into this. Thanks!

Re: Inition coil

Posted: Thu Apr 11, 2019 3:44 pm
by weekender
Replaced mine with an aftermarket part. Can't remember the brand, so can't speak about the brand you found. It failed the next year, back to a genuine Ford part (don't recall it being that expensive) -- been great so far. Mine would only fail driving in 80 plus degrees and when the engine and tranny were very warmed up.

Re: Inition coil

Posted: Thu Apr 11, 2019 10:07 pm
by micabarry
Thanks! That's helpful.

Re: Inition coil

Posted: Fri Apr 12, 2019 3:39 pm
by slapthecat
I did plugs, cap, rotor myself a few years back. Then I read about the ignition coil. Every time Ive had the doghouse off, I forget to look into it! If you're still working on this, could you post a pic or two?!?!

Re: Inition coil

Posted: Fri Apr 12, 2019 4:41 pm
by skater
slapthecat wrote:
Fri Apr 12, 2019 3:39 pm
I did plugs, cap, rotor myself a few years back. Then I read about the ignition coil. Every time Ive had the doghouse off, I forget to look into it! If you're still working on this, could you post a pic or two?!?!
I don't have a picture, but it's right inside the doghouse, driver's side, easy to access once the doghouse is off. Removing and reinstalling the doghouse takes longer than the actual coil replacement.

Re: Inition coil

Posted: Sun Apr 14, 2019 6:37 pm
by micabarry
I am still working on it and will take a pic of the process in a few days. Looks easy, just have to decide which brand to buy.

Re: Inition coil

Posted: Tue Apr 30, 2019 2:23 pm
by micabarry
I finally got around to installing my coil. I decided to go with an original Ford Motorcraft since the original had lasted almost 30 years and the aftermarket reviews were up and down. Since I had bought a tach earlier I decided it would be a good time to hook that up a well since it uses the negative lead of the coil as a pickup. Easy to remove and install with a 1/2" wrench and rachet with 3" extension. Hope the pictures help.

Re: Inition coil

Posted: Tue Apr 30, 2019 2:34 pm
by micabarry
Since the tach uses the negative wire on the ignition I decided to install it while I had the coil out. I bought a Bosch Sport ii for about $50 I think and pleased how it all came out. Now to find out what Red Line is for a 460 and what the best power range is.

Re: Inition coil

Posted: Tue Apr 30, 2019 2:39 pm
by micabarry
Forgot to mention that I found a separated wire that attached to a radio capacitor I believe and is mounted on one of the coil posts(to ground). It was easy to solder a new wire on and splice it in.