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1991 lx mustang

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  #1  
Old 03-28-2008 | 03:05 AM
Todd Olson's Avatar
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Default 1991 lx mustang

I just bought a 1991 LX mustang 4-cyl auto and after warm-up the check engine light comes on and the moter starts to run rough, the guy replaced the ignition module any buddy have an idea what it could be? toddolson45@yahoo.com
 
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Old 03-28-2008 | 08:25 AM
spike_africa's Avatar
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I would lean towards the EGR as it only opens once the car is warmed up. And it will do that to your idle when its bad.
 
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Old 03-28-2008 | 11:58 AM
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Could be o2 as well
 
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