Shwdii Beii Posted October 8, 2013 Share Posted October 8, 2013 Hey,Car would idle lumpy dropping too 500rpm back to 1k and then as I drive on the way upto 3000rpm there is like no power/flat spot and then after that and when boost kicks in it runs fine until it gets back down 3000rpmAny common problems like this or anyone have an idea? Any help will be very appreciated!!Thank You,Sion Quote Link to post Share on other sites
kotbehemot Posted October 8, 2013 Share Posted October 8, 2013 Hi,Check your idle valve and clean. It solved my problem. See below link for the instruction how to do it:http://www.toyotagtturbo.com/forums/showthread.php?58177-Idle-Control-Valve-Removal-and-cleaning-* Quote Link to post Share on other sites
Shwdii Beii Posted October 8, 2013 Author Share Posted October 8, 2013 Thinking it might be that, but would that cause the engine to have flatspot at low rpm?? after 3000rpm and some boost its fine!Cheers, Sion. Quote Link to post Share on other sites
kotbehemot Posted October 8, 2013 Share Posted October 8, 2013 When engine is on idle and you put load (lights, blower at max, etc. in the same time) rpm will go down - if you have dirty idle valve. Dirty idle valve shouldnt affect higher rpm then idle rpm (max 1100 rpm). Because with higher rpm, throtle is more open (different route for air going into engine).So if you have problems in range 1200-3000 rpm , you should check throttle. Maybe it is dirty and when it opens a little bit (low rpm) then air cant go into the engine. Quote Link to post Share on other sites
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