When I press the gas to try and accelerate I can only speed up to 30 mph after that the whole car will shake vigorously and make a whining sound if pushed long enough.
My car has 174000 miles.
My car has an automatic transmission.
Sounds like you may have a misfire or transmission is not shifting. I suggest having the computer scanned for stored codes to get a better idea of what is going on. If you need to contact a mechanic like one from YourMechanic to diagnose the problem for you.
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