engine stalls

my 93 Beretta GTZ starts without a problem but the engine will die randomely while I am driving. I have to turn the key to the off position and then back on and the car starts back up again with out a problem. does any one have any ideas on what the problem could be? thanx for the help!

its one of two things. 1. if the engine becomes real hot and stalls out, it could be a vapor lock problem. 2. if the engine temperture is normal then it could be a faulty fuel regulator. i would point more towards a faulty fuel regulator.

Hope this helps

Terrell

IAC - idle air controller....