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1993 Mazda 626

Tiny
FRIZZLECLIP
  • MEMBER
  • 1993 MAZDA 626
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 230,000 MILES
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?
Saturday, August 9th, 2008 AT 3:37 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
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)
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Saturday, August 9th, 2008 AT 3:43 AM

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