1997 Pontiac Sunfire tune up

1997 PONTIAC SUNFIRE
125,000 MILES • 4 CYL • FWD • AUTOMATIC
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UGLYPUGLY
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I just got a used 97 pontiac sunfire with 125,000 miles. it runs good,im just doing a tune up to get better gas mileage. Im putting new spark plugs,spark plug wires,and a new air fillter. My question is should i replace both o2 sensors with my tune up? There's no check engine light on, and it runs pretty good, or Should i only replace them when they go bad/check engine light comes on?
Jan 28, 2010 at 1:32 AM
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BLUELIGHTNIN6
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replacing your oxygen sensors is a part of regular vehicle maintenance. they should be replaced on a regular basis much like engine oil, drive belts etc... also check your tire inflations, over or under inflation can lead to poor fuel mileage and unsafe driving conditions.
Jan 28, 2010 at 1:51 AM