Join Date: Oct 2011
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so we tested the ficm, sure we did it right, but here's the results. koeo- 24 dropping to 20, then a second or two after the glow plug light went out, right up to 48. this happens every time we tried it. cranking- dropped to 18 immediately, no start, occasional fire.
is this normal when they go bad?
batteries seem good, not load tested other than as much loaad as possible on the truck, but cranked fine. also tested while on a charger, and connections are clean.
anything else to test before replaceing the ficm?