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Wrote off a no-start on a 6.0 as a bad FICM, then a guy in Lubbock showed me my battery cables
For two years I chased no-start complaints on 6.0s straight to the FICM or injectors and never once checked voltage drop on the cables. Last month a guy at a shop off Avenue Q in Lubbock put a meter across my positive cable, cranked it, and showed me 1.8 volts of drop on a truck I had already quoted a $900 FICM for. The cable end was green under the insulation where nobody looks, and cleaning it fixed the crank in ten minutes. Turns out I was reading the symptom and skipping the cheap test because the scanner made me feel smart. How many of you check voltage drop first on a crank-no-start, or am I the last one to change my habit?
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