EMP damage to computers - Defender Source
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  #1  
Old February 13th, 2010, 05:42 PM
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Chris Hinkle
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EMP damage to computers

I was wondering if anyone out there knows how to protect the computer on a D90 from an EMP (electrmagnetic pulse)? My 300tdi will survive, just curious about my 4.6 D110. I suspect the computer has to be unpluged, but can it be shielded with copper screen or something. Intellectual curiosity.
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  #2  
Old February 13th, 2010, 06:30 PM
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Carl Jonsson
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Are you talking about Electro Magnetic Radiation or EMF? What is the source? I would be more worried about your junk rather than your computer. I'm surprised any Defender owner is able to have children since we all sit on top of a massive source of EMF (Even worse if you run a dual battery). There's shielding you can get and it's not cheap. it's very specific, not copper. I can get you the info. $20 a foot. 3M also makes it for an astronomical cost.


Quote:
Originally Posted by Hoosier View Post
I was wondering if anyone out there knows how to protect the computer on a D90 from an EMP (electrmagnetic pulse)? My 300tdi will survive, just curious about my 4.6 D110. I suspect the computer has to be unpluged, but can it be shielded with copper screen or something. Intellectual curiosity.
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  #3  
Old February 13th, 2010, 06:32 PM
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I'm guessing a faraday cage would help
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  #4  
Old February 13th, 2010, 08:10 PM
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An EMP is what happens when you detonate a nuclear weapon 200 miles above the earth. Creates a hugh power surge that is front loaded and therefore bypasses surge protectors. However, in 1856 or so a huge solar flare occurred that fried the telegraph lines in the US - that would be your EMF. Similar effect I presume, with potentially similar effects on modern society. Also, the military and law enforcement intend to start using something similar to shut down all onboard vehicle electronics.

The question would be whether the entire wiring harness has to be shielded or only the computer. Like I said intellectual curiosity. It's not like I can go test out solutions, so I was just wondering if any of the members had working knowledge along these lines.
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  #5  
Old February 14th, 2010, 04:17 PM
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Gren Thomas
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Hi Chris a faradic cage would help only if the ECU was totally isolated, however if the ECU had any wires still connected to it that were outside of the cage it would induce a huge emf in the wires and it would pop the ecu.
also if an EM pulse was initiated it would also irreprably damage any wound component, eg alternator,starter,wiper motor,injectors & fuel pump.
it would also be possible to damage wires that were in a bundle or loop also instruments would be affected.

If the ecu survived the rest of the car most likely would not.

EMP would also stop a TDI. as it could damage the stop solenoid starter motor etc.

if you are looking for a reliable form of post WW3 transport may i suggest a bicycle. :-)

this is why i love this forum...you dont get these questions on difflock.

regards to all

Gren
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  #6  
Old February 14th, 2010, 08:43 PM
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Charles Galpin
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I think we have bigger problems in this scenario. I live in the outskirts of Washington DC in a rather white collar area, so I have simply paid attention to which of my friends I'll be forming an alliance with (complimentary skills, self reliance, common sense, have weapons, etc.) if/when they flatten the place and we need to make a run for the hills.
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  #7  
Old February 15th, 2010, 02:55 PM
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In that case i'm screwed.. i also live in a white collar area my neighbours are a pair of accountants and a teacher, i'm the only one with any mech abillity & with a country background, however the only weapon freely available in the uk is a pair of safety scissors.!

still when the food dries up i bet accountant meat is sooo tender.!

I read a recent post about weapons in the glove box..who will be the first to own up to a bomb shelter like the one in tremors 3...i would put money on it someone here has one.!

Peace all..

Gren
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  #8  
Old February 16th, 2010, 11:40 AM
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I dont have a bomb shelter, but I almost always have a weapon in the glovebox. Gotta love Texas, you dont even need a CHL to have a gun in your car!
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  #9  
Old February 16th, 2010, 03:16 PM
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I just put a tin foil hat on my truck.
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  #10  
Old October 23rd, 2013, 11:33 PM
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Hypothetical question/best guess ( as this came up around the dinner table tonight....)
If there was an EMP, would it fry all the wiring, or just the ECU and ignition module?
Worst Case Scenario...
Said in another way, is the wiring the weakest link, or is the ECU?
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  #11  
Old October 24th, 2013, 12:14 AM
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Your weakest link is probably fuel availability. In a true apocalyptic situation, you would be better off with a draft animal and cart than a truck.
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  #12  
Old October 24th, 2013, 12:26 AM
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Quote:
Originally Posted by COSteve View Post
Hypothetical question/best guess ( as this came up around the dinner table tonight....)
If there was an EMP, would it fry all the wiring, or just the ECU and ignition module?
Worst Case Scenario...
Said in another way, is the wiring the weakest link, or is the ECU?
Depends on proximity/yield/etc. Quite frankly it's an overblown threat.
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  #13  
Old October 24th, 2013, 01:09 AM
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Quote:
Originally Posted by chris snell View Post
Your weakest link is probably fuel availability. In a true apocalyptic situation, you would be better off with a draft animal and cart than a truck.
Yeah, probably not a good time for a Ford Falcon Coupe with a blower on it.
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  #14  
Old October 24th, 2013, 01:11 AM
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Sealed Conex box.
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  #15  
Old October 24th, 2013, 03:57 AM
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Quote:
Originally Posted by leastonce View Post
I'm guessing a faraday cage would help
The Safety Devices cage isn't good enough?
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  #16  
Old October 24th, 2013, 06:55 AM
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Quote:
Originally Posted by Rocky View Post
The Safety Devices cage isn't good enough?
It's basically made of gold right? Should work perfect.
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  #17  
Old October 24th, 2013, 07:15 AM
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Abraham Bell
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If you are really concerned about such a threat and have no place to go then join a local prepper co-op. Some have everything that will be needed , based on foresight and availability.
For example, I know of one in north GA. That is set up well.
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  #18  
Old October 24th, 2013, 07:22 AM
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Quote:
Originally Posted by chris snell View Post
Your weakest link is probably fuel availability. In a true apocalyptic situation, you would be better off with a draft animal and cart than a truck.
Exactly. I laugh at all the 'check out my bug out vehicle' crap over on sites like Expo. Loaded with so much it now gets 10 mpg.

Best thing will be whatever is on the side of the road and still works.
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  #19  
Old October 24th, 2013, 07:35 AM
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Sooo.... keep a spare Fuel Stop solenoid and i'm good ?
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  #20  
Old October 24th, 2013, 07:37 AM
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Quote:
Originally Posted by Yudda View Post
Sooo.... keep a spare Fuel Stop solenoid and i'm good ?
I am not familiar with the IP on the 200/300tdi but can you rig up a cable to shut the pump off (or just get out, pop the hood and do it by hand)?
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