Hi guys, know this is an old thread, but figured I didn't need to start a new title. (Unless nobody replies to this one.)
I'm wondering if anyone knows a way to bench test our coils. Like at the basic level with a multi-meter. There HAS to be a set of parameters between given pins that is a known figure. Things like resistance between pin 1 and 4, 3 and the output, whatever....
I know that some shops have a bench test unit for coils that have the ability to input voltage for a measurement at output. Not to mention the 'air gap' setting where the stronger the output, the larger the gap.
I was just wondering if perhaps there's something that's quick and easy, that would at least tell if it's dead or not.
Like a lot of us here I'm sitting around doing this...
Not wanting to buy 3 coils when chasing down the dreaded "random misfire". While it first looks like it's at least on 4, I'm also suspecting 6 is acting up, and maybe even 3. Problem is, it's idling so rough that swapping a good coil to the place where there are bad ones really doesn't help that much because it'll still have a rough idle no matter where I move the dead coil(s). I'd LOVE to have 3 or 4 then put one at a time in and see how it helps.
FWIW It's got 90844 miles. Had all new plugs put in 8,000 mile ago. Thought I'd also go ahead and put all new wires in this time for $hits and giggles while I've got it turned upside down. (Well actually only the washer fluid resevoir is upside down, uh... turned on it's end that's it.)