Immobilizer - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 04-15-2007
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Immobilizer

Can anyone point me in the right direction for figuring out the electrical and mabye be able to make my own immobilizer? I just need to figure out where on my truck would be the best place to set it up and what wires to cut!
Thanks.
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Old 04-15-2007
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Hi, Scott! I'm a volunteer prison chaplain myself and I love your user name.

I have some stuff to research that I've been lazy about so I can look this up for you also. What year is your truck?

It won't be as good as a PATS system though. What are you doing -- a hidden switch sort of deal, or is it part of the alarm?

There's several different ways to do it. Disabling the starter is the easiest -- but it could range up to disabling the key-on power feed to the PCM. In a case like that the truck might , but wouldn't start.
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Old 04-15-2007
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Hey n3elz, thanks for the reply and I like my username too, lol.

I was thinking of actually using a hidden soft IR switch and hooking it up to the starter would be good enough for me. My truck is a '91.

Thanks in advance.
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Old 04-15-2007
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Yes. You just use the small wire going to either the starter or the solenoid on the fenderwell. Not sure how the 91's are configured.

In older Fords, the relay (sometimes also called the external solenoid) was on the fenderwell. In newer s it's integrated into the starter.

If there is only a large gauge wire going to your starter, then the control relay is on the fenderwell just aft of the battery. You'll see the big wire from the battery going back to the solenoid, and a big wire coming out of it going to the starter. There will be one or two small wires also going to the solenoid. You can pull one of them off and see if it works and then that's the one you interrupt.

If there's a small wire going to the starter and no external solenoid, then that's the wire you interrupt.

The solenoid coil draws up to 10 amps or so though depending on the design, so you need a half decent switch or relay. Most I think draw much less, but that's a good design goal I think.

Hope that was clear.

Sadly, when you use a username like that you'll get ignored by a large number of posters here -- but that's "normal", lol. There's more than a few serious Christians on here though, so don't let it push your buttons.

In fact, some WILL try to push your buttons and beware of the "Religious and Political Discussions" forum unless you're very good at apologetics, lol. It's like the wild west over there sometimes. My Christianity is well known here and though some want to play games, most are tolerant.

But anyway welcome, be blessed, and lift up the name of Jesus!
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Old 04-16-2007
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Thanks for the help on the design there. I think i'll take a look at it next weekend so I will try to get back to you about it.

Yeah ive had this name on a few other forums and its never been a problem for me. I dont have a problem with people pushing my buttons - I just remember John 15:18, lol.
Thanks for blessing.
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Old 04-16-2007
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Welcome to the site Scott!

Like John, I too really admire your screen name. John, I had no idea you were a believer too, but i'm very new here myself.

Not to get off topic here (sorry, I'm an electrical idiot so I can't help with your problem), it's nice to see others who embrace the Truth. I've visited the Religious/Political section a couple of times and had a hard time holding my tongue (fingers). I'm no good at apologetics and don't want to say the wrong thing or give the wrong impression.

I don't think I'll get in too much trouble since it's just the three of us that have posted on this thread!

Welcome Brother.
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Old 04-16-2007
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Loving the username too. Welcome aboard.
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Old 04-16-2007
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Welcome man! This is a really great place to come to! :)
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