Idrees Posted June 8, 2011 Share Posted June 8, 2011 Hi guys,We're running out of ideas with this problem on the Glanza. Sometimes the car runs absolutely perfect, then the next day it idles funny.Now the car runs lumpy, as in the revs go up and down from 1500-200rpm while the car idles. The first thing we suspected was an air leak after the throttle body so we checked that by blocking the throttle body and the car cut out straight away, so that rules the air leak out. We tried the usuals such as adjusting the distributor and TPS but nothing helped. We removed all the vacuums that feed the boost gauge, boost controller etc and looped the manifold on itself but this didn't make any difference either. We then removed the vacuum to the MAP sensor and the idle went smooth and dropped down to around 1100. So, we tried another MAP sensor but that made no difference either. We've checked the spark, fuel etc and there's nothing suspicious to be seen. Any ideas would be appreciated?CheersIdrees Quote Link to post Share on other sites
Asad Posted June 8, 2011 Share Posted June 8, 2011 did you calibrate the TPS? (thread on tgtt)although you`ve checked, seal the throttle body and manifold using a new gasket/some sealer to be 100%earths ok?small fuel pressure regulator hose in? Quote Link to post Share on other sites
Amjad Posted June 8, 2011 Share Posted June 8, 2011 You've probably checked it but a lot of the time funny idles are down to TB gaskets, Jay says it all the time lol Quote Link to post Share on other sites
Idrees Posted June 8, 2011 Author Share Posted June 8, 2011 We removed the inlet manifold and fitted new gaskets with some instant sealant too. Yeah the earths are fine and double checked, and the TPS was calibrated by my mate using a multimeter. Quote Link to post Share on other sites
james@cjperformance Posted June 9, 2011 Share Posted June 9, 2011 did you calibrate the tps using a digital or needle multimeterdigital multimeters are not quick enough to calibrate the tps as you cannot get an accurate reading on it where as with the needle type you get a smooth flow as the throttle is opened. Quote Link to post Share on other sites
rorenapier Posted June 9, 2011 Share Posted June 9, 2011 Did you try another map sensor?Does it sound like its running on 3 cylinders?. We then removed the vacuum to the MAP sensor and the idle went smooth and dropped down to around 1100. Quote Link to post Share on other sites
Idrees Posted June 9, 2011 Author Share Posted June 9, 2011 Yes we tried another map sensor straight away and yes it sounds like it's running on 3! James we used the needle type. Asad, the small FPR hose is T'd in to the back of the inlet as this custom inlet doesn't have an output on the runner. It's a temporary job until I fit the Sard FPR after bedding in the engine. Quote Link to post Share on other sites
Idrees Posted June 9, 2011 Author Share Posted June 9, 2011 The 3rd injector doesn't seem to be fuelling. We removed the 3rd spark plug and started the engine, no fuel came spraying up from the bore. I've tried a new set of injectors (OEM) but that didn't fix it, my mate checked the injector plug with a multi meter and it is working as it should. Quote Link to post Share on other sites
Idrees Posted June 9, 2011 Author Share Posted June 9, 2011 Bump Quote Link to post Share on other sites
GlanzaV33 Posted June 9, 2011 Share Posted June 9, 2011 Bump my sound a bit odd but check the charging. my car was idleing up and down and alternator was over charging new one runs fine Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.