Yes I am having the same problem with my 1990 Mustang GT Convertible it has only 82000 miles on it and it idles until it warms up. Dont know what the problem is.
I thought maybe the timing but I dont know how to fix it.
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1990 Mustang GT Convertible, Blue with Grey ground effects and white top. Black Leather interior pw,pl,ps,pm, premium sound system. All stock =(
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