Duffman Posted February 24, 2009 Share Posted February 24, 2009 My car seems to be rough on idle...sits about 600rpm for a few minutes till warm....then if i take it a drive it'll idle about 1100rpm. Before when I started it ran about 1500rpm then dropped to 600rpm. This has all started happening after i tried to fit a Greddy BCC...which went wrong and the car was running rich for some reason...changed all the plugs for some IK22's (which were soaking). Car seems to run fine but its just this idling issue thats bugging me. Could the car running rich damage any of the sensors which could be causing this idling issue? Quote Link to comment Share on other sites More sharing options...
bigbloodyturbo Posted February 24, 2009 Share Posted February 24, 2009 (edited) Try cleaning the ICV, I have no idea if it will fix it but its a good a place as any to start, or get a thor FCD and see if its better than the greddy. Edited February 24, 2009 by bigbloodyturbo I meant idle control valve not IACV! (see edit history) Quote Link to comment Share on other sites More sharing options...
w41k3r Posted February 24, 2009 Share Posted February 24, 2009 i had the same prob my car would idle low or jump up and down so i sprayed carb cleaner in the intake and so far its been fine dunno if its a good thing to do though maybe search Quote Link to comment Share on other sites More sharing options...
Duffman Posted February 24, 2009 Author Share Posted February 24, 2009 Try cleaning the ICV, I have no idea if it will fix it but its a good a place as any to start, or get a thor FCD and see if its better than the greddy. Yeah i'm going to try this to start If my O2 sensor/lamda sensor was fudged...how would I know. Also if I have to replace is it a Toyota job? Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted February 24, 2009 Share Posted February 24, 2009 Yeah i'm going to try this to start If my O2 sensor/lamda sensor was fudged...how would I know. Also if I have to replace is it a Toyota job? As far as I know when the sensor is knackered the ecu adopts a default setting to keep the car running safely but I think the mpg suffers noticably because of it. So if you're pulling into petrol stations more frequently then your O2 sensor may well be shot!! As for any other tell-tale signs I'm sure someone will be along shortly to enlighten you. Quote Link to comment Share on other sites More sharing options...
AlanM Posted February 24, 2009 Share Posted February 24, 2009 O2 sensor could be why you are not boosting as well, the problems could well be related Quote Link to comment Share on other sites More sharing options...
Duffman Posted February 24, 2009 Author Share Posted February 24, 2009 O2 sensor could be why you are not boosting as well, the problems could well be related I thinkt he boosting problem could be more to do with a hose blown off, valve stuck open...hopefully I haven't blown a turbo I may be wrong though What kind of price are we talking for an O2 sensor from Toyota? Might be a daft question but is there only the one? Quote Link to comment Share on other sites More sharing options...
den1 Posted February 24, 2009 Share Posted February 24, 2009 Would a knackered O2 sensor flag up as a problem during the MOT emissions test? Quote Link to comment Share on other sites More sharing options...
ivan Posted February 24, 2009 Share Posted February 24, 2009 Only if it was knackered to the extent of failing the test Den. Unless you get the MoT guy to explain the results and he says "that's a bit high - I expect your O2 sensor's failing". Quote Link to comment Share on other sites More sharing options...
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