i have a 1993 ford taurus 6v and the check engine light is on and the car jerks...

when the check engine light came on, it stored an error code in the cars computer.
A mechanic can troubleshot the problem using this code.
 
Many shops will diagnose for free, takes about two minutes. Sounds like an air intake problem Check your intake hose to see if its cracked , especially in the folds.
 
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