negative coil primary voltage

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Posted to Technical Discussion Forum on 12/19/2018 48 Replies

Bit of a weird one...

Vehicle is modified...has a rousch supercharger, modified pcm programming so IDS doesn't work(says PCM is blank and wants to program it), and nice yellow high performance ignition coils. Plugs are new-ish and motorcraft.

Here's the co... Login to read more.

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Vehicle Data

2005 Ford F-150 FX4 5.4L

VIN	1FTPW14525
Engine	5.4 L
Trans	4-speed Automatic (Electronic)

Vehicle Data

2005 Ford F-150 FX4 5.4L

VIN	1FTPW14525
Engine	5.4 L
Trans	4-speed Automatic (Electronic)

48 Replies Received (View Replies)

48 Replies Received (Hide Replies)

Vehicle Data

2005 Ford F-150 FX4 5.4L

Vehicle Data

2005 Ford F-150 FX4 5.4L