Question about 1991 Ford Festiva
It may not be a short. it may be a ground problem. it's a good chance that if it were a short it would definitely throw a code,however there are several sensors in the fuel system. you have an O2 sensor which would explain the bad fuel milage or the iac valve or your fuel pressure regulater could be the fault. what's puzzling is the fact that your ecm is not throwing codes. generally i don't like to say it's the ecm itself on such a newer vehicle but it's happened before. these are just some options to think about. please rate this thank you.
Posted on Aug 29, 2008
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