2010 Ford F150 would suddenly loose power and only idle. Pull over shut off sit a couple minutes crank and run fine for a while then do same thing again. Wrench would show up on instrument panel

First thing to do is try getting error codes from the ECM. Possible that the ECM is faulty or will throw a code that might tell you what to look for. How does it run normally? Did it exhibit rough idle, loss of power and lousy fuel economy? Next question - have the coil packs ever been replaced? Ignition coil packs have a typical life of about 10 years before they start breaking down. This is just a stab in the dark but maybe test the packs.

My brother has a Ford F150 that does this the problem turned out to be a bad mass air sensor (little black box with plug in on it located next to the air box on the air intake pipe

What you describe is exactly what happens when an electronic ignition goes south. If it has a carb, though, it could be any number of things. Also, when an electronic ignition goes out - it stays out. There is no intermittent functioning. Sorry I can't be of help. Good luck.

have a 2004 ford f150 with a 5.4L. While the truck would sit and idle my temp gauge would go to zero and the check gauge and check engine light would come on. Ran the codes and got P1289. Cleared the codes and truck would do fine for a few days and then it would happen again while sitting and idling. I replaced the CHT sensor and cranked the truck. The check gauge light can on and got the P1289 code. Replaced the CHT again(thinking the new one was bad) and cleared the codes. Cranked the truck again and it did the same thing. Cleared the codes and the check gauge light and check engine light would come back on with the motor running. When the motor is warmed up, I turned on the key on without cranking the motor, the temp gauge works, when the motor is cranked and running, the temp gauge goes to zero and the the ckeck gauge light on back on and gives the P1289 code. Does any one have any ideas on what to do

Hey all. I've had my 2003 in twice for the Crankshaft position sensor. In Feb 08 it fixed everything. My car wouldn't start when it had been running for a while. I'd pull into a gas station, then go to start it again and it would just turn over. Same thing just happened in July 2010. They replaced the crankshaft position sensor again, but now it's still doing the same thing. If I let the car sit for 20-25 minutes, it will start and run just fine. However, this time around the check engine light is on and it has never come on. I'm open to any suggestions as to what to try next. What is the PCM exactly?

Ford truck was running fine then it just shut's OFF, afterwards did start once stayed on for a couple of minutes then shut off again. A friend thinks it's the computer after checking the car. Note I did pressure wash the engine 2 day's before and didn't use it till now.

Crank sensor - 100%

Usually near the crank pulley or behind it, fails when hot, then restarts when cooled down.

it sounds like your throttle position sensor

This whole problem is most likey due to a sludged up intake and idle speed control valve, do the following procedure and it should take care of the problems, also run a couple of cans of LUCUS brand fuel injector cleaner through, I know u will see it is more expensive than other brands, but the thing is it works!
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, 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

Sounds like one of your chambers isn't firing. Run your car for a few minutes, shut it off then pull your plugs one at a time and see if one of them is wet. Might just need a new plug.