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Every once in awhile it'll just loss power, kinda like a fuel pump going out, but today it just died. itll do it going down the high or in town. 1 of the codes was po108 map/baro circuit high imput. i dont know what any of that means, or what to do?
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It could be low fuel pressure, or a vac leak, or a problem with the idle air control valve. Also the mass air flow meter, or the cold start valve. I would start with testing the fuel pressure and the mass air flow meter.
As with any no-start or stall problem you will need to figure out if it is a fuel or ignition issue. The high idle usually means you have a vac leak or a problem with the throttle body or idle air control valve. The control valve is how the computer controls the idle speed. You'll need to watch the fuel system and spark to see which is being affected when the engine dies. You might want to hook a test light up to the coil to see if it is loosing voltage for example.
The Bronco has TWO fuel pumps, a low pressure and a high pressure. Low pressure is located in the fuel tank, the high pressure is located....Attached to the LH frame rail ahead of the fuel reservoir. my guest would be the high pressure pump is getting hot and shutting off, cooled down and starts back up again ??
This condition can be caused by a sludged up idle speed control valve and a dirty throttle valve, do the following procedure to correct this, if it still doesn't repair the problem have the idle speed control system tested by the dealer.
Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
I have seen two different causes for this problem.
A. Something in the tank, like a small piece of plastic that gets sucked to the fuel inlet. Then after the car dies it flows backward, then allows the car to start again for awhile.
B. (And more likely) There is a thermal overload switch on the fuel pump. When fuel pumps start to go bad the bearings drag causing the pump to get hot and eventually blow this time delay fuse that resets itself when the pump cools down. I would have the fuel pump pulled and checked and then have the tank inspected at the same time since you are in there anyway.
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