1996 Ford Aerostar gas mileage

1996 FORD AEROSTAR
166,000 MILES • 6 CYL • 2WD • AUTOMATIC
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NIGHTASDAY
  • MEMBER
  • 1 POST
van has consistantly run at 21mgp since purchase.
last two month has dropped to 17mgp.
runs as smooth as before.
would a code reader be able to give me some direction as to what changed?
would ECU be able to change settings ?

Thanks.
Oct 11, 2010 at 8:52 PM
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BLUELIGHTNIN6
  • ✓Experienced Mechanic
  • 16,542 POSTS
is the check engine light on? there are plenty of small maintenance items that can have an effect on MPG, including but not limited to air filter, fuel filter, weak spark plugs, low / incorrect tire pressure and much more.
Oct 12, 2010 at 5:40 AM
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