hi.. i have a 90 ls integ.. the problem is that when i start the car. it idles at 4krpm then slowly it moves to 25 then all the sudden it bounces back and forth for no reason......i changed the map sensor and the iacv today.. no progress..now the car idles at 3krpm and it wont go down...i think that its the tps but the dealer does not have it and the yard want 75 bucks for it...if anyone has a used throttle body out there with a sensor on it let me know or any clue on what to do.. email please

 

yeah it happened to my 91 civic...im wondering what it was too

 

FITV

 

Check for leaks around the intake manifold. Also make sure your coolant is bleed properly.