I have a 2001 Ford F250 truck – it was stalling out (which was diagnosed as a faulty fuel pump), so I had the dang thing replaced. But nearly 6 months later, it’s randomly stalling out again when I put it in reverse or stop at a light. Any thoughts?
I have a thought.
When the engine is hot, open the hood and with the engine idling, take the handle of a screwdriver and rap on the Idle Air Control valve.
http://www.rockauto.com/catalog/moreinfo.php?pk=2417600&cc=1372508
If the idle speed changes, replace the IAC valve.
Tester