On steep inclines the engine revs up, and I can only reach about 25 mph. On freeways I can only to get to 45 mph. Since these experiences I have not driven the car much and only on flat roads. Does it look like a transmission rebuild? I am going for an estimate on Monday with AAMCO. The car has 79K miles.
 
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Ask Your Question1990 Ford Mustang LX
Question: Transmission question. Car drives fine on flat city street and slight inclines.
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