This happened twice today, once on the way to work, once coming home. Slowing down from about 50 mph to make a left turn, the engine stalled. No warning, it just quit. Restarted easily and ran fine for the rest of the drive.

Here's what I've replaced in the last 14 months and 16,000 miles: Head gasket, O2 sensor, all new copper fuses, voltage regulator, plugs, wires, cap and rotor, fuel injectors and seals, fuel filter and accumulator, OVP relay. The car is my daily driver and has always run great with a normal idle speed and it starts better than when I got it. It now has 152,000 miles.

Any ideas what I should check?

Edit: I just pulled codes from the diagnostic plug and the only one I got was for the air injection system. I unplugged the air pump about a year ago because it was noisy when cold but it's never thrown a code before and I thought it was only for emissions anyway.