Honda Civic CRX 87 Model
 

Hi

I have a problem with my CRX that it runs on 1000 rpm when i just start it, if i push the pedal and run it higher it wont go down... Like if i push it up to around 5000-6000 rpm and remove my foot from the pedal it goes down to like 3000-3200 and stays there. I heard it might be a problem with my MAP sensor, or the engine might get air from another source then my airhose/filter... So was wondering if anyone know where the MAP sensor is located on my car ? Been trying to find it for a couple of days now, checked the ECU to se if it was built in but it wasnt and i cant seem to locate it at all... Or perhaps anyone know other things i might check that can be related to this problem ?

Sorry for my english, its not the best but ill try to explain better on any replies i might get if needed.