check engine light on 1993 Ford Escort

My 1993 ESCORT has the "Check Engine" light come on. It will come on about 5 or 10 minutes into driving---stay on for about 10-15 minutes then go off for about 5-10 minutes, and then come on again. It will keep this routine for as long as I am driving. I changed my oxygen sensor about a year ago, so I don't think it is that. Is there anyone out there who tell me what might be causing this problem? I think that the catalytic converter needs to be changed. Did anyone else have this problem, and if so---what did you do to correct it? Thanks-MV

by in Flushing, NY on April 09, 2009
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3 answers 1 comment
ANSWER by , August 04, 2009
value cover gasket has gone bad there is oil leaking into the spark plug cavity.
ANSWER by , April 10, 2009
You need to have the specific code retrieved. This will help you trace down what the problem is. Other wise you are guessing!! And, that is usually VERY expensive and time consuming.
COMMENT by , April 10, 2009
Thank You dandd. I will go to the mechanic, and ask him to hook it up the machine that shows the problem. Thanks again------------MV
ANSWER by , August 20, 2009
Thank You curtwells. You are good, because I noticed a crack in the cover after reading your response. Thank you so much for your help. I will change it this week. Michael