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Re: TFI ignition upgrade
Terry, I did the upgrade with the E92 coil about a two months ago in my 89 4.2 and its been running great until today. The Jeep died on me while I was on my way back from work. A co-worker and I pulled it back home and I took the multimeter to it. Zero Volts at the pigtail wires with the key off, then 11ish volts with the key on and cranking. I also put my timing light on the wire from the coil to the distro and got no flashes.
Gotta be a bad coil already right?
I put the old coil back on there with the new cap, rotor, wires and plugs gapped at 45 and that didn't work either. Should the old coil have made those plugs fire, or was the gap to much for it to overcome?
Also, is 11ish volts enough to run the coil?
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'89 4.2L, NV3550, TFI, All Working Emissions
Last edited by iraq_vet_x2; 07-29-2009 at 10:46 PM..
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