My 2011 ford mustang v6 motor will be running fine goin down the road then without warning it wont wont accerate the rpms drop to 800 rpms an wont acclerate i can turn the motor off wait few min an it will restart an run fine for a little while then it will do it again

SOURCE: 2002 Monte Carlo wont start

sounds like your passlock sensor on the ignition barrel is faulty. you will have to go to the dealer to have it replaced because of the programming after replacement.

SOURCE: 1990 vette runs fine after 15-20 min won't start then wait 20 -min runs fine again until i shut it off

I had the same problem. Turns out,( and I didn't believe it when I was told) but, my problem turned out to be cheap (inferiour) plugs and wired. I was reccomended to use NKG plugs and Borg-Warner wires.

SOURCE: my 83 z28 ran fine then started shutting down

could be the pickup coil in the distributor they go bad fairly often
pickup coil resistance should be 500 to 1500 ohms between the two leads.also move vac advance plate ohms should not change.there should be infinite ohms [no continuety] between either of the leads and ground

SOURCE: runs fine til the temp out gets hot enough then dies

you didn't say if it was hot on the temp gauge? no matter, it sounds like you have a stuck t-stat. when the engine is cold, a mechanical valve keeps the water from coming out of the engine block until warmed up, then opens and lts the cooler water in. this cools down the engine and the colder temp of the water shuts the valve again. this happens constantly while the engine runs, and if your t-stat is stuck, the engine heats up the water in the block, but with nowhere to go, simply overheats the motor. a good repair book will locate the thermostat housing for you and should you the repair procedure. (i assume you have checked the water in the rad. low water will give you same symptoms). good luck.

SOURCE: crank shaft sensor for 94 chevy caprice 4.3 V8/location on motor

The car needs to be scanned. It is free at Autozone, Oreilys, and Advance autoparts. Get the Code number for the bad part. The clerks can tell you what is wrong.