what will make my 99 e350/v8 run poorly after it warms up? on 1995 Ford Probe

It runs perfect for about 10 mins or less until temp gauge is mid-range, then starts mis-firing.

by in Saint Joseph, MO on March 20, 2013
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1 answer 1 comment
ANSWER by , March 23, 2013
mis fire usually ignition prob. review when last tuned up. run diagnostic for any discrepancies. could also be issue with fuel delivery. try ethanol treatment on next fill up to clean fuel system.
COMMENT by , March 27, 2013
Hey thanks artoro8. tried the ethanol treatment already. I saw something about a coil on another website as a possible cause. gonna check it out. I am totally ignorant, so this will be fun. this is not my main wheels and I don't want to spend much on it!