I have a 94 base model prelude with a F22 (sohc non-vtec) and when the car idles it the rpms surge up and down and if you are idleing along in first gear the car will surge and let off fairly rapidly. The car also has no low rpm power and struggles to get past 2200 rpm after that the car accelerates fine. Running injector cleaner help I also did basic tune up plugs, wires, fuel and oil filter, and what not I am thinking it is dirty injectors but I am looking for some imput and any advice would be gladly welcomed thanx

 

search for idle air control valve and fast idle thermal valve

 

some say this could be egr going bad or a bad o2 or a vaccum leak.

 

http://www.ef-honda.com/ben/Badidle.html

 

thanx guys I really appreciate your input