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If you get the specific Ford part number of the individual piece of wiring there are places that kind of specialize in new old stock NOS parts. You could get the part numbers from your Ford dealer. This would be one option. I'm not clear, is your wiring bad or are you just thinking it may get bad?
Its 30 years old. It still works but I want to update it or replace before it goes bad on the freeway like the other one did.
Let me amend my suggestion: Once you get a new (newer?) OEM part, replace the old one. If you are up and running, you are good and you now have a known good spare, as your old one fits and works.
Had an '84 Tempo that went through two or three modules . It would shut off at a stop light, coming to a stop, or occasionally driving.
It would always start right back up and run for weeks, days, hours, or minutes. I never knew which.
When I figured out what it was I put a new module on that lasted several months before doing the same as before. Sometime later I bought two, one for the engine and a spare. I kept the special small socket, the grease and the new module in the glove box.
As is usually the case, after I got a spare and was prepared for the 5 minute change out, it never happened again as long as I had the car.
Luckily I've not had any TFI problems with any TFI vehicle since I had the Tempo 30 years ago.
Carrying spare parts always a good idea. I have another question....I have attached a picture below. There is some kind of "box" sitting on the firewall with a vacuum hose that goes to the top of the EFI manifold. If you pull the hose from the box, the engine dies...can anyone tell me what this box is and how it works?
That is the MAP sensor. It's like the MAF sensor on most newer cars. It basically tells the engine how much fuel and timing to give the engine based upon engine vacuum. Others could explain it much better than me, but that's what it is.
Engine stumbling badly and dying is normal when it's disconnected.
I believe Manifold Absolute Pressure sensor is the complete name.
