so i have a 93 del sol, when i first bought the car the only probably was that whenever you try to take off it spudders or 'loads' up, but as soon as you hit 4k rpms it just gives it all it has and runs like its a vtec even though its only a 1.5b. ive been trying to fix the issue ever since i got the car, other than that it runs perfect only 144k miles, but even at 4k (like i said) it wants to just fly! its crazy. the speedsensor is not working, and someone is telling me thats it. but ive replaced so much **** on that car that was "supposed to fix it" if you know what i mean, and im just trying to figure out what it may be. thanks

 

Auto or manual transmission?

Last full ignition system tune up?

Pull the CEL codes. Then reset the ECU to which ones return.