Problem just started today. Pontiac Sunfire, 1997, 88k miles. My car is hesitating during acceleration around 20-30 mph. It's like it tops off a that moment. If I press harder, It will slowly climb...but i can tell that the engine is struggling as it feels like its running hard and sounds louder than normal. From 0 to around about 20 or 30mph, the car accelerates normally, but after that, it won't. If I pull my foot off of the gas and then try to accelerate again, it doesn't seem to respond. To be completely honest....I haven't had a tune-up or oil change in quite some time...(I know- terrible) I am definitely planning on taking it in ASAP, but I would like to have an idea of what the problem could be. Any suggestions as to what it might be? Thank you.
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