What year is your DI? If it is pre-1996 it is equipped with an OBDI reader under the passenger seat. If it is a 1996 or newer, it has an OBDII port above the pedal assembly under the steering column. Get the codes read at your local Auto Zone or similar shop. Once you have the codes do a quick search of the web to determine what is going on with your engine. If you still need help, post what you have found here and I am sure there are a number of people who will be able to give you further insight into how you should proceed.
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