My friend has like a 93 or that body style prelude, and when his h23 blew, he bought a 97 h22a. Heres the problem. For a while his car when being in neutral and was idleing the revs would jump repetedly(sp) to which someone told him or he thought it was his tps senesor. So according to him he replace the tps, and made sure that all sensors, hoses, lines, etc were in good working order. But when he started his car the damn thing went WOT with out his foot being on the gas. I thought it might be that his throttle cable or TB is sticking open. I also recall hearing a simular prob on a GSR a while back, and remember hearing a guy saying that it was his fuel filter, but my freind is certain that is not the prob. Any help would be greatly appreciated.

Thanks
Brandon

 

so his rpm's are going up and down while hes stopped in neutrel? if that is the problem i'd like to know the solution too cuz i've known people with that problem and my 92 prelude is now doing it sometimes. ive heard a bunch of different stuff like its the timing belt needing to be adjusted, a sensor thats messed up, or one of the wires that goes to the fuel injection. somebody help us out here.

 

if your not sure if the throttle plate is getting stuck open, either A...take off the intake and look, or B remove the throttle cable temporarily. its also a common charactericitc of a vacuum leak. spray brake parts cleaner all over the manifold and vacuum lines while the car is on. the car will bog down bad if its able to suck it in through an open vacuum. also make sure the tps is reading the correct voltage. it could also be a bad iacv or something with the fuel/timing and maybe even the ECU could be messed up. too many variables. check everything one thing at a time and eliminate the ones that u check. or do it the easy way and take it to someone who knows what theyre doing and save the time and frustration. either way, good luck.

 

another cause for idle problem could be a drity throttle body. I had the same problem, on my old motor, h23 it never went away. It is now starting to happen with my h22, only when it is humid or hot and i have been running it hard though, not as consistent as my old motor which happened all the time after, check all vacuum lines for leaks and every thing.

 

sounds like the fast idler is shot... just block it off and your idle will be back to normal...