http://forum.lowyat.net/ Thu, 02 Jul 2026 09:58:09 +0800 FeedCreator 1.7.2 http://forum.lowyat.net/topic/1074354 Greeting everyone.<br /><br />Im riding a manual &#39;07 persona(non-IAFM), currently facing problem....<br />my car can not reach over certain RPM(3.5K~5K onwards), the car wouldn&#39;t go, like something hold it.., likes you hold the e brake...engine power have, but can not go... Idling time also same problem.<br /><br />I have check with PDT, only O2 sensor fault code appear, but my frend told me this O2 only applicable idling time, high rev no use(is it true?).... fault code already deleted..problem not solve...check engine light also no blink...<br /><br />Im facing this problem almost 3 week untill last week its become suddenly OK without doing anything...very weird lol....then last saturday its happen again....Monday become OK...but not very good..5th gear can not reach 5K.. <br /><br />I&#39;ve tried many thing--change plug,cable plug,coil, fuel filter, air filter servise..<br />ekzos system check no leaking...trotle body oso no problem(check during PDT) <!--emo&:stars:--><img src='http://static.lowyat.net/style_emoticons/default/rclxub.gif' border='0' style='vertical-align:middle' alt='rclxub.gif' /><!--endemo--> <br /><br />so far my car modification drop in, 4-2-1 xtraktor &amp; LCP ACP.......all this modi since &#39;08... Redliner3 The Fast &amp; The Furious Wed, 24 Jun 2009 17:50:26 +0800