i have a 94 pontiac firebird with an automatic . currently with 150k miles .

1994 PONTIAC FIREBIRD
150 MILES
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MOEBSTER
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accelerating from a stop it feels like its late in upshifting causing it***** forward when shifting to second and 2nd to 3rd and finally around cruising range around 40-50 well flooring it doesnt make it downshift like a automatic is supposed to do it would just rev until 3500 and stay there and not even enter 4th oh yeah thats the other prob i can accelerate up to 80 and will not enter 4th causing the engine to stay a little more revved than its supposed to be this on long trips made the engine hotter too . i changed the tranny oil and nothing i changed the tps and its still the same does the tps need to be adjusted ? please help
Dec 11, 2011 at 7:33 PM
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FIXITMR
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did you scan for codes? tranny shop can do it.
Dec 11, 2011 at 8:36 PM