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5.0L (1979-1995) MustangTechnical 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.
I have a 93 gt convert, stock 5.0 HO the car idle nice and runs fine at part throttle but anything past half throttle just bogs the motor down, its dosen't sputter or die it just has no power. back of the throttle and it starts to recover.
The cats are original. and the car is stock I tuned it cleaned the egr replaced filters. the car is running smoother but the full throttle problem continues