Question about 2001 Chevrolet Malibu

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2001 Chevrolet Malibu 125,000 miles Recently replaced my air filter with a high flow K&N filter. Ran great for 3k miles, now car stutters when idling and has a hard time accelerating. Ive been told its the air fuel sensor. Could that be it? Also I hear a scraping sound and feel it when driving. It sounds like it could be my brake calipers. It stops at higher speeds. I checked under the car and in the wheel wells and there is nothing hanging down to make the sound. Could i have broken a caliper?

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I have a 2001 chevy malibu, not that i can solve your problem, but i did experience your same problem (scraping noise).
I did need a caliper, but. at that time i also had to replace my rotors and break pads.
Everything was related, wheel baring was bad, making everything else go bad. rotors, caliper, pads etc.
After replacing my rotors 2 times, and my break pads, and caliper once. It still wasn't fixed.
Be sure to check EVERYTHING. The sound will go away, depending on what you replace. but thats tricky, because the noise will go away, but if you don't fix the real problem, it will just come back again.
i finally got the wheel barings fixed, havent had a problem since.

Posted on Dec 11, 2008

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