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.

Unable to read codes

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Old Feb 22, 2008 | 07:32 PM
  #1  
bbbngowc's Avatar
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Default Unable to read codes

91 Fox. GT. 5 Speed manual. CEL is on and I am unable to retrieve the codes. I tried the DIY KOEO test as stated in this http://myshifter.com/joel50/EECTEST.html But nothing. I then placed a Code Reader on it and all I keep getting from the scanner is "Car is not responding. Check cables and blah blah blah..."

What's the problem here?
Old Feb 22, 2008 | 07:55 PM
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Default RE: Unable to read codes

try it again
Old Feb 22, 2008 | 07:57 PM
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Default RE: Unable to read codes

ORIGINAL: mjr46

try it again

Tried it 6 times already.
Old Feb 22, 2008 | 07:59 PM
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Default RE: Unable to read codes

try it 6 more ftw
Old Feb 22, 2008 | 08:00 PM
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Default RE: Unable to read codes

Old Feb 22, 2008 | 08:22 PM
  #6  
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Default RE: Unable to read codes

You have a "No Codes" condition..... usually caused by a wiring snafu, or a fubar'ed ECM..... you may want to go over the procedure at www.fordfuelinjection.com » No Codes?
Old Feb 22, 2008 | 08:46 PM
  #7  
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Default RE: Unable to read codes

Thanks. I'll use this and see what comes up.
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