Engine Mechanical problem
1997 Jeep Laredo 6 cyl Four Wheel Drive Automatic 222000 miles

sometimes when going down the road the motor started shutting off you pull to the side of the road and you can start it back up and drive off it was shutting off and back firing but i replaced the crank shaft sensor, distributer cap and rotor button and it has been doing great until today it shut off and but it didn't back fire this time i started it back up and pulled off now the check engine light is staying on i thought it might be in the computer but a local mechanic told me thats not the problem that i would have all kind of issues if hat was the problem please help