RB-GTE Posted August 24, 2012 Share Posted August 24, 2012 Usually I will turn the key and hear the fuel pump buzzing for a couple seconds. I will then start the car and it will idle at 1200rpm for a few seconds and drop down to about 700 and bounce back and forth from 600-700 and the car shakes non-stop for 1-2 minutes before it starts to warm up a little. Even today when I tried starting it this morning, it wouldn't hold it idle and went down to 100-200 and the car died... and there was this weird bubbling sound coming from the rear (I assume fuel pump). So basically the car runs like shit when trying to get it started from a cold engine. It's a 97 TT 2JZ-GTE. I have a light weight flywheel (if that has to do with anything), and the hard vibration sounds I hear seem to be coming from underneath me. Maybe the cat? I will be swapping out the cat with 1st and 2nd decat soon, installing walbro 255lph fuel pump as well (for my BPU upgrades).. but not sure if this will improve anything. Any ideas why its idling like this from my description? I mean once it warms up and I turn it off and the start the car it starts up just fine. Quote Link to comment Share on other sites More sharing options...
safcdixon Posted August 24, 2012 Share Posted August 24, 2012 Have you checked the coil pack clips? It could be them starting to fall to bits, or check you plugs too easy to check. Quote Link to comment Share on other sites More sharing options...
RB-GTE Posted August 24, 2012 Author Share Posted August 24, 2012 Would those kinds of things cause a bad idle? I didn't think of it but I'll check. I just don't find the car runs that smooth at all, and it has 69k miles while my old one with 90k miles ran MINT and SMOOTH, idle was like butter.. Quote Link to comment Share on other sites More sharing options...
ADZsupra Posted August 24, 2012 Share Posted August 24, 2012 mine does the same mate..ive got alot of mods including SRD 264 CAMS n titan pullys which i know can give it a lumpy idle but im gunna get lee to check everything...like u il be replacing my exhaust..decats and downpipe Quote Link to comment Share on other sites More sharing options...
kniff_666 Posted August 24, 2012 Share Posted August 24, 2012 check the Idle control valve. They can get pretty clogged up sometimes and tend to loosen off when warm. Its an easy thing to do and check. the link to do it is here Hope this helps. Quote Link to comment Share on other sites More sharing options...
dan294 Posted August 24, 2012 Share Posted August 24, 2012 Does sound like the ICV sticking. I've got 264 cams in mine and the idle is perfect. Quote Link to comment Share on other sites More sharing options...
RB-GTE Posted August 24, 2012 Author Share Posted August 24, 2012 (edited) Mine is pretty much stock though, just front mount intercooler and intake, other than that stock engine I'll try this guide for cleaning out the Idle control valve and hope it helps! http://www.mkivsupra.net/vbb/showthread.php?210956-How-To-Clean-Idle-Control-Valve-Cleaning-Aka-ICV-%28IAC%29 thanks Edited August 24, 2012 by RB-GTE (see edit history) Quote Link to comment Share on other sites More sharing options...
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