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1993 Chevy Corsica rough idle
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Posted at Sat Jul 04, 2009 12:31 pm |
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By
dingdang,
New to the forum |
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Give Feedback | Votes: 0 |
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Engine Performance problem
1993 Chevy Corsica 6 cyl Front Wheel Drive Automatic 250000 miles
my car is idling very rough and stalling out, it blows black smoke bad, very bad fuel milage, got catilic converter cut out and put pipe in and still problems, could it be o2 sensor? |
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car repair manual for your Chevy Corsica Repair Question.
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Posted at Sat Jul 04, 2009 4:09 pm |
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By
rasmataz,
Certified 2CarPros Master Technician |
 (8144) Give Feedback | Votes: 226 |
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Typical symptoms of an engine that is running rich (too much fuel, not enough air) are poor fuel economy, elevated emissions (Carbon monoxide or CO), and engine may have rough idle or surge condition.
Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode. |
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