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This might not be the best answer to your question, but I'll tell you what I did when my 86 bronco was making me nuts with the same problem. I traced the fuel pump wire from the tank to the engine compartment and cut it by where the wire turns from two wires to one and hot wired it to an ignition wire that is only on when the key is turned on, after that mine never stalled again, but you do have to be careful because every time the key is on the fuel pumps will be running, or just change the computer as I believe that is where the problem really lies

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Q: You have replaced the whole fuel system new fuel also spark plugs sensors ignition and pickup coil and relays Why will my 1986 ford bronco II 2.9L manual stall after reaching operating temperature?
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