Operation CHARM: Car repair manuals for everyone.

Poor Fuel Economy


Fuel economy is noticeably lower than expected. Customer should drive vehicle and note miles per gallon decrease.

POSSIBLE CAUSE ACTION


Restricted exhaust Check Catalytic Converter. Refer to EMISSION CONTROL DEVICES/DIAGNOSIS, TESTING AND INSPECTION PROCEDURES/TESTING PROCEDURES/CATALYTIC CONVERTER.




Poor or contaminated fuel Recommend higher grade fuel



Other mechanical problems Check for overheated engine, slipping transmission or clutch, dragging brakes etc.