Ford Discontinued part for my 93 Lightning...What do I do?

10

Asked by Jun 05, 2010 at 07:07 PM about the 1993 Ford F-150 SVT Lightning

Question type: Maintenance & Repair

My 93 Ford Lightning needs part number  f3tf-12a650-ac which is the elec cont unit(ECU) Ford has discontinued this part. How can I find this part or can I use another part with a similar to the part needed for this truck?

10 Answers

10,485

Here are a couple restoration sites that may help you. (amazing how google works) http://www.latemodelrestoration.com/Ford-Lightning http://www.summitracing.com/parts/JET-89313/Application/?query=Year|1993|Make|FORD|Model|F-150+PICKUP&prefilter=1 http://www.ecmtogo.com/ <--ECM repair/reprogram

2 of 2 people found this helpful.
10,485

On a side note. Why are you replacing your ECM? Why do you think it is bad?

1 of 1 people found this helpful.
10

the truck is in the shop right now and that is what it needs. Thanks for your speedy reply. Do you know if I cant find the part would I be able to use another computer from the same type of truck? I found several model numbers that were similar i.e. f3tf-12a650-xy instead of f3tf-12a650-ac...Im wondering if 2 letters would make a real big difference

1 of 1 people found this helpful.
10,485

Without doing some serious research, I honestly cant answer that question. OBD1 was a very finicky platform, and to be honest the original computer was set up to work with your drive-train (engine and diagnostics, trans, and rear axle gear ratio). So the new computer (f3tf-12a650-xy) you found (which I cannot locate in the ford books) may allow the engine to run, but have other problem, then again, it may not allow the engine to run at all. I would inquire with your mechanic as to why they feel the ECM is bad. If it is the chip? or the whole ecm? are there any other possibilities? And also... 2nd opinions are not just for your doctor either.. f3tf-12a650-ac - is a valid ecm part number f3tf-12a650-xy - is NOT a valid part number

google Mustangs and More .com,you may find it their,they have a lightning form on their,you will have to regester to post what you need,but it is free.

I have a 94 Lightning and I was looking for the same part. The "XY" won't work. Our trucks need the "AC" or "AA" or "AB" (last 2 letters) version of the ECM/ECU. I found the part here: http://www.car-stuff.com/ I'd call to make sure they have it in stock. It didn't sound like they had many of them. They did not have the ECM/ECU manufactured by "Standard" but they had one manufactured by A1Cardone (which costs more). Good luck.

I just found out that www.car-stuff.com does not have the correct part even though their website says they do. I'm going to try to send my ECM to Cardone and hope they can rebuild it.

10

hey everbody. im about to prt out a 93 lightning. would it be feasible

1 of 1 people found this helpful.

If you part yours truly out I need the computer 4049873297

if you still have the wiring harness that goes from the fire wall to the ecm and rest of the truck please call me @ 313-989-6567 or em ail me at jobs 3407 @gmail.com alternat # 313454-8529 help if you do not have it do you know someone who does my pins corroded and it fell apart. all good except all of the wires are black cant trace. thank you

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