While driving on the highway, my engine suddenly stops running. The electrical power is still on, the "check engine" light comes on. This happened once 2 weeks ago, and then it happened twice on the way home from work yesterday. Any help, or advice would be appreciated.

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'99 F-150 XL supercab, flareside.Oxford White, 4.2L Auto.,3.73gears.
2"/4"drop, Superchip, Flowmaster 50 series,
TransGo Shift Kit, Airaid, Hellwig rear anti-sway bar.
Spal power door locks, keyless entry.

 

I forgot to mention, that each time. The engine restarted after turning the ignition off.

 

Might check to make sure the Superchip is securely inserted into the ECU. Our Expedition showed similar symptoms and a little duct-tape over the chip corrected the problem.

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1997 4x4 Expedition- 4.6L, true dual exhaust w/Ravin DI/DO, K&N air filter, SuperChip, airbox mods, Edelbrock shocks, 285/75R16 BFG ATs, 2000 F150 "XLT" wheels, 4.10 gears, Auburn LS, Clarion In-dash CD player, Smitty Bilt push bars and nerf bars.

2000 4x4 F250 SD XLT SuperCab SWB- 6.8L, Offroad Pkg, Camper Pkg, 4.30LS, Tape & CD player, Remote Keyless Entry, Sliding back glass, tinted windows, 265/75R16 OWL tires, Smittybilt nerf bars & Line-X bedliner.

NoMo's site

 

Thanks Nomo. I'll give it a try!