1997 Mazda 626 Transmission hesitation

Tiny
BOBHALLINAN
  • MEMBER
  • 1997 MAZDA 626
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 162,000 MILES
My son bought a 97 Mazda 626 a couple of months ago. It has 162,000 miles, but a pre-purchase inspection from a mechanic found it to be in sound condition. Recently, the check engine light came on. We also noticed a hesitation or bucking when going from standstill and shifiting to driving speed. This hesitation/bucking only happens at the first gear shift. It's an automatic transmission. There are no signs of leaks, and the transmission fluid level is right where it should be. We took it to Auto Zone and had them check the code and it said one possiblity is a faulty O2 sensor. Would this account for the hesitation/bucking? Thanks.
Monday, October 13th, 2008 AT 9:33 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi bobhallinan,

Thank you for the donation.

Yes, a faulty O2 sensor would have symptoms such as lack of throttle response.

Additionally you shoud check the spark plugs and related parts.
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Monday, October 13th, 2008 AT 12:36 PM

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