2002 Mitsubishi Galant Why does my car shudder a 25 mph?

2002 MITSUBISHI GALANT
137,000 MILES • 4 CYL • FWD • AUTOMATIC
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KATTIES123
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When I am going 25 mph my car shudders. As long as I am under or over 25 mph it drives perfectly. I had the tires replaced and balanced, still shudders. Since I know little to nothing about cars, I wanted to ask you guys first before I head to a shop.
Jul 24, 2009 at 4:05 PM
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JACOBANDNICKOLAS
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Does the car continue to do this at any speed over 25MPH? Does it seem as the engine is missing or a problem with the drive line? Where do you feel it most, in the steering or the seat of the car? Finally, have you had the motor mounts and / or trans mounts checked? Has the check engine light ever come on?

Let me know.

Joe
Jul 24, 2009 at 10:35 PM
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KATTIES123
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No the car only does it at 25 mph. I don't hear or feel a miss, the car shifts fine, drives fine. I can feel it in the steering wheel but mostly in the seat of the car. I have not had the motor mounts or trans mounts checked but I will. The check engine light has come on. I took it to AutoZone where they hooked it up to some machine and they told me it was the Oxygen Sensor and it wasn't a big deal ?? Is it a big deal? Will this be really expensive to repair?
Jul 25, 2009 at 10:33 AM
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JACOBANDNICKOLAS
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Yes, the O2 sensor can cause driveability problems It's not a hard part to replace and the part isn't too expensive. You should replace it. Also, let me know what you find out about the motor mounts and trans mounts.
Jul 25, 2009 at 9:37 PM