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EDIT: Now that I think about it, the POS immobilizer that was just removed already tapped into the PCM circuitry somewhere based on the no WTS light in the other thread. It would be easy to put a switch or "key" of some sort in the circuit that was already interrupted by the insurance approved immobilizer.
I Fully agree with this statement and had seriously considered it as an option.
The fault I find in it however is if there is ever a malfunction in the switch the truck dies. No matter where I am, no matter what I’m doing. Considering the winding mountain passes that I am constantly towing through this would not have a positive outcome.
A momentary switch to energize the circuit will be utilized.
Thankfully the previous immobilizer decided to die while parked in my shop not half way through the Fraser Canyon.
I will do a separate thread with a write up soon.
Just waiting for the bits to arrive from the jungle.
As you read through the following bullet points, please know that I am doing my best to be helpful.
1. Before going through the trouble of wiring up a switch in the CPP circuit of an automatic truck, check with your insurance to see if that qualifies as an immobilizer.
Does your truck have the starter relay on the passenger fender? If so go to #2, if not go to #3.
2. When asking about the qualifications of an immobilizer, be sure to mention the starter relay being shorted with the ignition on with the help of a screwdriver will start the truck.
3. A failure of any critical system will result in a stalled vehicle. Be it in a parking lot or on a mountain pass. I get it, I count on my truck to be ready when I need it too. If done properly, a switch in a critical system can be reliable. Many FTE'rs and others have installed a kill switch in the IDM, IPR, CPS or PCM ground circuits as well as other creative ideas.
Some have multiple levels of critical system isolation.
Again, I am attempting to help you satisfy the immobilizer requirement in a way that does not give you a false sense of security. Unless I am misunderstanding the way you will wire up the CPP.
Looks like @SpringerPop ’s web page is no longer up???
Everything ok Marv??
I’ve put versions of his disabler in several trucks over the years. His design used a double latching relay and a hidden reed switch to interrupt power to the IDM. This design used the factory remote keyless entry system to arm it and a magnet hidden in the key fob to disarm it.
Looks like @SpringerPop ’s web page is no longer up???
Everything ok Marv??
I’ve put versions of his disabler in several trucks over the years. His design used a double latching relay and a hidden reed switch to interrupt power to the IDM. This design used the factory remote keyless entry system to arm it and a magnet hidden in the key fob to disarm it.
The site Marv hosted his "engine disabler" modification on is not the only 7.3L site that has been taken down in recent times. I acquired an offline version of the engine disabler modification if anyone is interested in it, let me know and I would be glad to spread the advice from Marv.
All's OK with me personally, though at 75 I don't move as fast as I once did.
The web site? Not-so-much.
Apparently GoDaddy made some changes, which "disabled" my site, and although I still have all the information and photos to put it back up, I'm not tech savvy enough to get that done.
Art Krewat told me what happened and what I needed to do, but it's stuff that I don't understand, so.......
As you read through the following bullet points, please know that I am doing my best to be helpful.
1. Before going through the trouble of wiring up a switch in the CPP circuit of an automatic truck, check with your insurance to see if that qualifies as an immobilizer.
Q-Does the truck start when you turn the key? A- No Q- So a second step is involved for the truck to start? A- Yes “Then it qualifies as having an immobilizer “ Q- What are the implications if I no longer have an Immobilizer. A- You have to declare it and your insurance premiums will go up.
Does your truck have the starter relay on the passenger fender? If so go to #2, if not go to #3.
2. When asking about the qualifications of an immobilizer, be sure to mention the starter relay being shorted with the ignition on with the help of a screwdriver will start the truck.
“This would be considered a second step”
3. A failure of any critical system will result in a stalled vehicle. Be it in a parking lot or on a mountain pass. I get it, I count on my truck to be ready when I need it too. If done properly, a switch in a critical system can be reliable. Many FTE'rs and others have installed a kill switch in the IDM, IPR, CPS or PCM ground circuits as well as other creative ideas.
I also count on my truck to be ready for the task asked of it.
The new switch wired in today will most likely be more reliable than the 21 year old part it’s intended to disable.
The switch relies on being turned off. Lazy, Forgetful, or both and it is useless.
The momentary on the starter circuit is Basically Foolproof. Must be activated to start and won’t cause a stall if it fails.
Some have multiple levels of critical system isolation.
Again, I am attempting to help you satisfy the immobilizer requirement in a way that does not give you a false sense of security. Unless I am misunderstanding the way you will wire up the CPP.
Good luck sir.
Lets face it. Anybody coming after a 7.3 for what it is won’t be stopped.
Anybody looking for a joyride or quick transportation will move along.
Lets face it. Anybody coming after a 7.3 for what it is won’t be stopped.
Anybody looking for a joyride or quick transportation will move along.
You are welcome sir. Your truck, your insurance and your choice sir. I do not want to or intend to sway you from doing anything you so choose, just wanted to provide another opinion and view of what I was reading before you pressed on with the modification.
I am pleased to see you are happy and that your insurance premium will not go up!
Crazy to me that theft is such a huge issue in a place where literally everybody has a gun strapped to their belt. I really don't think vehicle thefts up here are very common. We have the odd one on the news where somebody is on the run and steals a car. Last year we actually has some guy running from the cops steal a truck, crash it, steal a car, crash it and then steal something else and crash it all in the same day. All vehicles running in peoples driveways warming up.
You guys had a TV show up there in Canada called "bait car" or something similar, where cars were rigged with cameras and GPS unbeknownst to the would be car thieves, who naturally believed that they had "got away" with the car they stole, where no alarm sounded and no disabling system deterred them.
Until a few blocks later.
I wish there were bait cars, bait catalytic converters, bait trucks, and in particular, bait Super Duties in every state of the Union.
