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  #1  
Old 08-15-2013, 07:39 AM
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Default How to test coil packs on a 94' 2.3

I am in the process of elimination phase of operation '' I need the truck running, because the dump run pile is taking over my back yard '' + put a smile back on girlfreinds face!! In going through my haynes ranger manua I found a way to check(a two(2)part) the coils out by way of a multi-meter. The 1st(primary) being a check of the terminals, now FORD does not spec what the ohms should be at/under,but, haynes suggest at 5 ohms or less would be a sign of a good coil......both of mine(coil packs) were at or between 6 to 8 ohms,not passing. The 2nd (secondary) being a check of spark output continuity in pairs (1&4) & (2&3) and FORD specs that at 13 to 15 k ohms, in which I am ok in, but that was a short lived celebration dance, abruptly interrupted by the fact that it failed on the primary test, then the manual goes on, suggesting a second opinion at the dealership or another competent shop & have it retested, well where I live nobody has the " coil tester " (napa,oreilly,car quest & all the local mechanic shops) With that said my question(s) are , The tests that I performed on my ranger,really telling me anything? And does anyone know of a way(tests) I can double check the first set of testings? Money is tight for every one, including me & I am trying to spend $ on only whats chocking my truck for now, and then circle back and take care of the " needs to be replaced soon'' later, in a timely fashion! (I know I am dreaming & at the same time proving what a greenback I am.......although slowly, but surely, I am determined to shed my greencoat for coveralls!) I look forward to receiving more knowledge from the good people out there! (last sentence is real,I promise, no brown nosing from my neck of the woods!)I thank you in advance,to those people offering valid information.
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1994 SUPERCAB RANGER, 2.3 4CYL. manual trans(5 speed) Status of truck: in garage going through a process of elimination, currently going through ignition system
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  #2  
Old 08-15-2013, 10:33 AM
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It sounds to me like your coil pack is ok, as far as resistance is concerned. It could always arc at the higher voltages, but that might not show up with a multimeter.

You need a special meter to test it at higher voltages. They are too expensive for the casual mechanic.

Personally, I would look elsewhere for your problem.

2005 2.3L XL Electronics Tech since '70's
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Old 08-15-2013, 11:52 AM
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X2 what's it doing. You immediately start out on the coils instead of explaining symptoms.
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Old 08-16-2013, 02:17 AM
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I had another thought occur to me. Check your phone book for anyone that might rewire electrical motors. Give them a call and see if they have a "megger" (megaohm) meter.

That's a high voltage ohm meter. I bet they wouldn't charge you to check your coil packs. It would only take a few seconds to check each one.

Take a box of doughnuts or something with you. It never hurts to show a little appreciation.

2005 2.3L XL Electronics Tech since '70's
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Old 08-16-2013, 01:59 PM
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Default Re: How to test coil packs on a 94' 2.3

Thank you, I didn't mention this, one time in darkness(night time) right near where the power is connected(front coil pack). I could see a little arching of small blue sparks.I was in a hurry,closed the hood(did nothing as far as the coil) later that evening looked for it,couldn't find it,&haven't seen it since??????
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Old 08-16-2013, 02:25 PM
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Default Re: How to test coil packs on a 94' 2.3

Actually, only looking for info on getting c the coil packs tested,but I will gratefully take good advice! The closet thing I can think of is it runs like my merc comet I had in high school w/302 v8 &my buddy tuned up??for me & my car ran like crap and it was because the distributor was "retarded"& the timing had to be reset. Of course that is not my problem now...but thats how its running.Please excuse the weak description of problem,I hope that helps a little towards letting you know what my truck has been doing of late! thanks

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Thank you Mike in Bama, I will look into that!
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1994 SUPERCAB RANGER, 2.3 4CYL. manual trans(5 speed) Status of truck: in garage going through a process of elimination, currently going through ignition system

Last edited by HELLSAFRAID; 08-16-2013 at 02:24 PM.
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  #7  
Old 08-16-2013, 02:26 PM
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Wow. I had a Comet with a 302 in high school too. Anyhow, arcing means bad wires or bad coil pack(s).

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