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check engine light

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Old Jan 8, 2013 | 10:01 PM
  #1  
Randall Ford's Avatar
Randall Ford
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From: Eastern Oregon
check engine light

How many sensors should I change after 90,000 miles. My light comes on at lower speeds, then goes off?
 
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Old Jan 8, 2013 | 10:33 PM
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rla2005
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If you want to throw money away replace all of them. Otherwise why not check for codes yourself.

What year/model/engine/transmission vehicle are you referring to?
 
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Old Jan 9, 2013 | 11:21 AM
  #3  
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Randall Ford
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check engine light

I guess I got worried when I saw the Chilton book suggesting that at least 4 of these sensors be replaced every 15,000 miles. I did actually go down and talk to a mechanic, he said it was the oxygen sensor, no worries unless you want to please the EPA. Thanks for your reply, Randall Ford (yes that is my real middle name)
 
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Old Jan 9, 2013 | 11:58 AM
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The O2 sensor does more than keep the EPA folks happy, it will make your wallet happy too by delivering better fuel economy.

You really should get a handle on what code(s) are happening then repairing the root cause.
 
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Old Jan 9, 2013 | 03:06 PM
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Yeah, a faulty O2 will cause many more problems one is wanting to deal with. Get a code reader, verify what is going on and if possible, replace sensors with Motorcraft parts, not cheap knock offs. You can even check for cods with a paperclip if needed too for free.
 
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