Isaac Probert Posted January 11, 2014 Report Share Posted January 11, 2014 Hi there, trying to sort out a Idle speed problem on a 1UZ. I have set up a Hold Power system but Im still getting stuck. I turn the Key on, the ISC travels all the way in and sits there rattling on its 'stops' for a few seconds. Car starts and I can adjust the idle base map fine to get the RPM around 900. Store and turn off the engine, the Hold relay stays on and the ISC moves all the way back out and rattles like mad at the other end of travel until a moment before the Hold relay releases, at that point the ISC comes off its seat a small way. I thought I was on top of this but the same thing happens every time, when I restart the car it idles higher then the start before. Its like its forgetting where the ISC ends up. I tried switch AUX 5 + 6 but that just makes it start with lower and lower rpm. So I obviously am doing something wrong here, the 2nd question is can I stop the ISC rattling on the end of its stops by reducing the hold relays active time or something? Thanks for your help Quote Link to comment Share on other sites More sharing options...
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