Did Lighting stall my engine?
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Laughing Gas
Joined: Nov 2013
Posts: 868
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From: SoCal
Did Lighting stall my engine?
Has anyone ever had their truck stall while driving near lightning? I spent the week of the 4th on the Colorado River in AZ. On Friday, we were chased off of the water by T-storms. I quickly got the boat on the trailer and drove back to the house, about 4 miles away. There was no rain, but some crazy dust storms and lightning. Four times during that drive, my truck shut down, tach went to zero, gauge cluster lit up with SES, water in fuel, ABS...everything. It would only last for a few seconds each time, then back to normal with all warning lights off. I’ve experienced this before when I had HIDs with my DP chip, but adding a ferrite choke bead cured it.
My my first thought was CPS, but Forscan didn’t show any codes (except for the ones I know about, which are related to known issues I need to address, 2wd solenoid and the like)
The next day, everything was fine to the launch ramp and back as well as my 3 1/2 hour drive home on Sunday.
Any thoughts?
My my first thought was CPS, but Forscan didn’t show any codes (except for the ones I know about, which are related to known issues I need to address, 2wd solenoid and the like)
The next day, everything was fine to the launch ramp and back as well as my 3 1/2 hour drive home on Sunday.
Any thoughts?
Posting Guru
Joined: Jul 2017
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A bad ground somewhere on the truck might cause such a symptom with lightning.
The explanation is complex (or I have not had enough coffee to express it simply). But I'll try...
Lightning makes a field around the bolt detectable at great distance. It only takes a couple of volts of "signal flap" to confuse a computer.
The truck body could be considered a Faraday cage and provide shielding, but the truck body is not grounded. So the body picks up the signal. If there is a bad ground, then that ground does not "come along for the ride."
This causes a "signal flap" (expressing an idea since the right technical term is not coming to mind).
The explanation is complex (or I have not had enough coffee to express it simply). But I'll try...
Lightning makes a field around the bolt detectable at great distance. It only takes a couple of volts of "signal flap" to confuse a computer.
The truck body could be considered a Faraday cage and provide shielding, but the truck body is not grounded. So the body picks up the signal. If there is a bad ground, then that ground does not "come along for the ride."
This causes a "signal flap" (expressing an idea since the right technical term is not coming to mind).
Thread Starter
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Laughing Gas
Joined: Nov 2013
Posts: 868
Likes: 1
From: SoCal
A bad ground somewhere on the truck might cause such a symptom with lightning.
The explanation is complex (or I have not had enough coffee to express it simply). But I'll try...
Lightning makes a field around the bolt detectable at great distance. It only takes a couple of volts of "signal flap" to confuse a computer.
The truck body could be considered a Faraday cage and provide shielding, but the truck body is not grounded. So the body picks up the signal. If there is a bad ground, then that ground does not "come along for the ride."
This causes a "signal flap" (expressing an idea since the right technical term is not coming to mind).
The explanation is complex (or I have not had enough coffee to express it simply). But I'll try...
Lightning makes a field around the bolt detectable at great distance. It only takes a couple of volts of "signal flap" to confuse a computer.
The truck body could be considered a Faraday cage and provide shielding, but the truck body is not grounded. So the body picks up the signal. If there is a bad ground, then that ground does not "come along for the ride."
This causes a "signal flap" (expressing an idea since the right technical term is not coming to mind).
Edit: I found some links. Thanks Stewart!
You don't have much info listed on the type of Ex you have, but based on your CPS comment, as well as your problem, I'm guessing you have a 7.3L PSD, yes?
RFI is actually a known problem for 7.3L powered rigs that have an aftermarket ICP or two-ways, or CB's and stuff with exposed (unshielded) coax cables.
https://www.ford-trucks.com/forums/1...l#post13680518
https://www.ford-trucks.com/forums/1...l#post13477561
https://www.ford-trucks.com/forums/1...l#post13754957
Stewart
RFI is actually a known problem for 7.3L powered rigs that have an aftermarket ICP or two-ways, or CB's and stuff with exposed (unshielded) coax cables.
https://www.ford-trucks.com/forums/1...l#post13680518
https://www.ford-trucks.com/forums/1...l#post13477561
https://www.ford-trucks.com/forums/1...l#post13754957
Stewart
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