RustyRuu Posted December 21, 2016 Share Posted December 21, 2016 IDLE CONTROL SYSTEM MALFUNCTION (FAIL SAFE) Replaced in last 1000 or so miles: piston rings rebuilt heads main and rod bearings all seals on the bottom end group n Motor, transmission, and dog bone mounts new timing belt and all idler/ cog pullys water pump neutral safety switch (used from 09 forester) IACV (used from 99 legacy) i may have forgotten something. I did not reset the ecu after the iacv so this may be my problem. this CEL is intermittent and is night and day difference when its on and off. when its on it runs very poor, will almost stall out coming to stops (200 rpm) and will just be sort of jerky on and off throttle. not as jerky as it was before replacing the neutral safety switch but kind of. also just sort of sucks to coast it will abruptly lunge forward or back at times when the light is off i couldn't ask for a better running older car. what else is there that might contribute to throwing this code? my grounds suck right now when reinstalling my tranny/engine (connected them outside the vehicle and put them in at the same time) i notice the trans ground wire is snapped so i've been running without it, i could have fried that neutral switch again? also reverse switch may be out or it could be the lights i haven't looked into it i just don't have reverse lights. TPS? Fuel pressure regulator? Link to comment Share on other sites More sharing options...
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