security system problems 98 EB

[SJBikesaws]

So after my second heater core change in 3 years, my remotes stopped working. I could live with that but now I have something (maybe a rogue signal in the air) that trips my alarm on every few days. I can live without a security system, I am 50 miles from the nearest town anyway.

Its a pain to do it, but when it goes off I can still pull the battery cable, turn the ignition on, and re hook it up. My wife drives this one and I need to do something about this.

So my questions
1. Anybody have a full breakdown of the system?
2. Maybe I disconnected something and missed it? a relay? something in the dash?
3. Can I disable or bypass the system?
4. Anybody have a better idea???

 

[stamp11127]

Have you checked the batteries in the remotes?

 

[Bedrck47]

So after my second heater core change in 3 years, my remotes stopped working.

Very curious as to what heater core changes would do with remotes not working??

Check your remotes batteries

 

[Bedrck47]

I will say that if the remotes were working prior to the heater core change and stopped after everything was back together Then you missed something and didn't get it 100% back together

 

[SJBikesaws]

batteries are good, put new ones in first. Yea, I am sure I missed something. I just don't know what, kind of why I was hunting for a schematic of the security electrical.

 

[SJBikesaws]

Very curious as to what heater core changes would do with remotes not working??

Check your remotes batteries

Just that you have to pull everything in the cockpit to change it

 

[Bedrck47]

Attached are the prints for the Remote Control Alarm And Lock System Not sure how much help they will be for you.

However what would be better would be if you got a copy of the Ford Service Manual That will have all the wiring diagrams and troubleshooting tips Plus much more

http://www.expeditionforum.com/threads/factory-service-manuals.25089/

 

[Bedrck47]

If you have an aftermarket alarm system installed these prints will not show that wiring

 

[SJBikesaws]

thank you! thats a start

 

[SJBikesaws]

*****FIXED*****
I hate leaving these threads unfinished for the next guy. I had what looked to be an aftermarket security system (due to the lack of Ford part numbers and evidence that it had been wired in after the fact) it was mostly contained underneith the steering column behind the lower dash covers. There were a couple of black boxes and a relay tied into everything. On the wiring going into what I would guess to be the main unit, there were 2 blade fuses in line. Pulled both and now it has no security system. I think the problem was more towards the remote side, but now I just use the key to open doors, the power lock switch still operates, just not off the remote. Other then that everything else is still working and I am happy.

As for not having a security system now, the odometer reading should be enough to scare off ANY thief.

 

[SJBikesaws]

If you have an aftermarket alarm system installed these prints will not show that wiring

Actually they DID help with an aftermarket rig, it gave me a point to start at and find what I needed, THANKS