1993 Mazda 626

1993 MAZDA 626
230,000 MILES • 6 CYL • FWD • AUTOMATIC
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FRIZZLECLIP
  • MEMBER
  • 1 POST
Hi my daughters car has poor economy.I have change the distributer,plugs,air filter,fuel filter,fuel injector cleaner.No check light comes on and the car has alot of power and does not hesitate.Could this be o2 sensor problem?
Aug 9, 2008 at 3:37 AM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
Hi there,

I would do a scan anyway as the check light will not always come on with a logged fault, I would consider the O2 sensor as a probable cause as a faulty sensor will always cause the management system to run rich.

Mark (mhpautos)
Aug 9, 2008 at 3:43 AM
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