my daughters 97 chrysler cirrus check engine light comes on intermittently, shows code 11. she says when the engine light comes on, the car hesitates then the light goes off. can someone help?

You are getting an intermittent loss of signal to the PCM from either the camshaft position sensor, or the crankshaft positions sensor. The PCM needs the signals from these sensors to properly adjust the timing of the engine for optimum performance.