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1987 - 1996 F150 & Larger F-Series Trucks
Lost spark when checking timing 94

1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Lost spark when checking timing 94

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Old

Jan 3, 2026 | 02:06 PM

#16

jrlowscot

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Mountain Pass

Joined: Nov 2005

Posts: 116

Likes: 0

Test light was not flashing on tach line to coil, troubleshooting diagnosed as bad ICM. Replaced ICM on fender and truck is fixed. Would be very hard to do without the repair manual. I still wasn’t sure the ECM was ok, but turned out fine. Thanks for the help.

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Old

Jan 3, 2026 | 03:34 PM

#17

90project5.0

Fleet Mechanic

Joined: Oct 2025

Posts: 1,932

Likes: 430

At least she’s fixed And thanks for posting the update!

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