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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.

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Old 03-18-2014, 09:44 PM   #1
smokedatshii
 
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Vehicle: 1991 ford mustang gt
Location: ga
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Default 91 mustang gt problems help please!

I have a 91 mustang gt 5.0l and it hesitates to go when i press the gas and a WOT and it runs really rich the exhaust smoke burns your eyes really bad i just fixed the timing and it stalls out sometimes and it will barely even spin a tire i have a trickflow intake and the msd ignition can sombody please tell me what you think is wrong ?
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Old 03-18-2014, 10:50 PM   #2
mjr46
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run a koeo/koer test and a cylinder balance test to see if any cylinders are dropping out, By using the koer test you can access that function of the ecm, google it
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Old 03-19-2014, 04:24 PM   #3
smokedatshii
 
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run a koeo/koer test and a cylinder balance test to see if any cylinders are dropping out, By using the koer test you can access that function of the ecm, google it
Ok but do you think a bad EGR valve could make it perform like this ?
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Old 03-19-2014, 04:24 PM
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