5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Check Engine

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Old 03-09-2005, 06:06 PM
  #1  
Big D
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Default Check Engine

Had a check engine flashing on my 90 gt 5.0. Went to autozone and dude read code and stated left side running lean. So I bought the LS O2 sensor and installed it. I did not reset the codes by disconnecting the battery. The light still comes on while driving. Is this normal or do I have some other problem? If I reset it... should it stop or should it have stopped blinking on when I replaced the sensor?

Thanks,
Don


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Old 03-09-2005, 06:18 PM
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bluepony1
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Default RE: Check Engine

ive got a windstar and the samething happened but when code was read the light went out for a little while til i replaced the o2 sensor
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Old 03-09-2005, 06:26 PM
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Big D
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Default RE: Check Engine

As stated I replaced the sensor and it is still blinking.
Do I have to reset it again to stop it or should it stop on its own?

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Old 03-09-2005, 08:19 PM
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stanglx2002
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Default RE: Check Engine

you need to reset the computer
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Old 03-10-2005, 01:15 AM
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Reign
 
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Default RE: Check Engine

This happened to me and it was and exhaust leak.
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Old 03-10-2005, 01:18 AM
  #6  
bobby
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Default RE: Check Engine

a little off topic......................... car looks SWEET!!!
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