It's an 86 Taurus with a 2.5 automatic. To date it has a new battery, fuel pump and filter, plugs, wires and cap, idle speed control motor, throttle position sensor and oxygen sensor. Probably a few other forgotten items also. The grounds seem good and I've found no vacuum leaks. The car starts great but probably revs too high when cold. It will run briefly then quit. It will restart and run about 4-5 minutes then quit again. After that it may quit at any time but it will start again. I do recall when I was last driving it that there were times it would not start until it had sat for a while. I'm thinking computer but am open to suggestions from anyone that may have experienced this with their car. I sure would appreciate any help that you may offer. Thanks!