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DOES 'CHECK ENGINE LIGHT' ALWAYS COME ON IF A SENSOR IS FAULTY? 700 1990

posted by  prudhoes on  Thu Aug 1 09:57 CST 2002
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My 1990 740 wagon 8V non-Turbo with 165K miles runs good. Can I assume that all the sensors are operating properly if no CEL comes on, or do I have to do a OBD check occasionally to insure everything is OK, and that I am getting the best possible gas mileage? My MPG around town is about 17 - is that average? Tim Coughlin in Arid-Zona (AZ USA), prudhoes@aol.com






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