Have Ford Questions? Ask a Mechanic for Answers ASAP
The wrench light can illuminate for a number of reasons on the 6.4l engine. If the engine stalled out it's most likely a throttle control system fault, but then again it could be about 100 different things. The first step will be scanning the computer for trouble codes to tell us where to look first. Without knowing the fault codes it is pretty tough to diagnose.
Do you have access to a scan tool?
Well there are a couple of common things we could try to see if you can get it to run again. Do you want to try some and see what we can do or do you think you'll just take it to a shop?