1996 Toyota Avalon excessive fuel consumption

Tiny
TOYOTAFAN21
  • MEMBER
  • 1996 TOYOTA AVALON
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
I did a tune up to my car and the now its eating up way to much more gas than usual. There is no leak in the fuel line. I've noticed that the acceleration is not as quick, sort of a dull pick up when doing normal accelerating. The car is due for a emissions test and I'm wondering if the car would fail inspection because of this.

I'm guessing the o2 sensor is bad or there is a vacume leak somewhere so should I just go and and get an engine computer diagnostics check just to be sure?
Saturday, November 22nd, 2008 AT 6:23 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

A faulty O2 sensor will induce a rich mixture, I would be checking for vacuum leaks, have a fuel pressure test done and check for leaky injectors, get the scan done as well, start here.

Mark (mhpautos)
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Saturday, November 22nd, 2008 AT 10:13 PM

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