mightGETaSUBARU Posted May 25, 2013 Share Posted May 25, 2013 1998 Legacy Outback wagon idled fine before headgasket job, then after about 110 miles got a check engine light and noticed that the car would almost die right after coming to a stop (car is an automatic BTW) the idle would drop to almost nothing, then come up to between 1000 and 1200, then drop to nothing, back to 1000 range, then to nothing and back to 1000ish, then back to almost dead, then perfect idle the CEL says that the idle control is too high RPM... the car had a few vac hoses disconnected before the head gasket job and idled great. Link to comment Share on other sites More sharing options...
Zekeuyasha Posted May 26, 2013 Share Posted May 26, 2013 Double check your vacuum lines for leaks or perished hoses before you start tearing the engine apart again, and just to be safe clean out the MAF meter with the appropriate cleaner Link to comment Share on other sites More sharing options...
Fairtax4me Posted May 26, 2013 Share Posted May 26, 2013 Did you mess with the throttle cable adjustment when you took the manifold off? If the cable is adjusted tighter now, the ECU will have trouble adjusting the idle speed because the throttle plate is slightly open. Did you use new manifold gaskets? 1 Link to comment Share on other sites More sharing options...
mightGETaSUBARU Posted May 26, 2013 Author Share Posted May 26, 2013 I don't think I messed with them... yes new gaskets, genuine Subaru Link to comment Share on other sites More sharing options...
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