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.

91 5.0 engine code

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Old 10-28-2007, 10:37 PM
  #1  
unassassinable
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Default 91 5.0 engine code

I moved this post from general tech to 5.0. I apoligise for the double posting, but I need this answered as the engine light comes on much more often now...

I followed the directions to get the engine code from this posting:

https://mustangforums.com/m_919444/m.../tm.htm#921609

My check engine light blinks 4 times in a 4 second interval. Can someone please tell me what this means or even better know of a site that can show me? By the way, so everyone else knows (because this is GREAT information!) i used a wire hanger to ground the wire to the negative battery terminal. All your input is greatly appriciated!

Rich
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Old 10-28-2007, 10:44 PM
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unassassinable
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Default 91 5.0 alternator upgrade question

Hey Guys. I am looking at upgrading my current 85 amp alternator. I will be upgrading to an electric fan, replacing the stock sound system with a home theater style surround sound system, support a dash mouted laptop for my music use and movies...


I am not sure on what size alternator I need. I am torn between the G3 130amp and the G6 200amp. I know they will both fith with slight modifications to the alternator mount, but is the 200 over kill? Is the 130 too little for what I need (and want!!)? Any input is apriciated.

Rich
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Old 10-28-2007, 10:45 PM
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Joel5.0
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Default RE: 91 5.0 engine code

DIY KOEO/KOER/Cylinder Balance Self-Test ....suggest to repeat the test, that code pattern KOEO doesn't add up. LUK

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Old 10-29-2007, 07:10 AM
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slickshift
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Default RE: 91 5.0 engine code

Doesn't really make sense
Could it be two 11s? (system pass: one, one....one, one...)
I'd repeat the test
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Old 10-30-2007, 06:58 PM
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Default RE: 91 5.0 engine code

Yeah, I will do that tonight and post results. Thank you! [/align]
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