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1998 Ford Taurus Engine shudder and rough idle -- throws p0

Tiny
GORDYBOARD02
  • MEMBER
  • 1998 FORD TAURUS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 161,400 MILES
For a while the vehicle has been idling rough at a stop and I suspected but never searched out a vacuum leak. Today the vehicle began to shudder pretty bad both on the road and at an idle and the check engine light began to flash which I've never seen. Instead of surging at idle then falling to almost dying it would continuously idle very poorly. Acceleration was extremely poor and when I got home there was a definite smell, a little bit like burnt popcorn. Now i'm just worried its a little more than a vacuum leak. OBD scan showed p0133, p1131, and p0302. Thanks!
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Saturday, April 3rd, 2010 AT 3:38 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
PO133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

PO302 Cylinder 2 Misfire Detected

PO1131 Lack Of HO2S Switch - Sensor Indicates Lean

It sounds like you have a bad oxygen sensor. Also, has the misfire can be caused by the a lean mixture or a fouled plug. I would start with the bank 1 O2 sensor.

Let me know what you find.
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Saturday, April 3rd, 2010 AT 11:49 PM

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