vacuum leak on 2000 celica

2000 TOYOTA CELICA
100,100 MILES • 4 CYL • FWD • AUTOMATIC
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ARL
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would a vacuum leak on a 2000 celica cause engine performance to drop from 30MPG to less than 20 ?
Jan 28, 2011 at 1:39 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
That is possible. A vacuum leak would affect the idling speed and O2 sensors which would indicate a lean condition and inform the compuuter to enrich the running.
Jan 28, 2011 at 1:56 PM
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ARL
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Thank you so much for prompt response..
Jan 28, 2011 at 3:40 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
You're welcome.

Have a nice day.
Jan 28, 2011 at 7:27 PM
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