October 2, 201511 yr comment_700510 Hey boys Wired up a Small port ae92 4AGE into a friends KE70 and I'm having this weird issue. It turns on really quickly as it should and idles really well at about 1000rpm ( Definitely one vacuum leak) but slowly deteriorates after about a minute. It used to idle for as long as we liked (10mins+) but had alternator issues at the time Also the car stalls almost immidiately after opening the throttle body more than like 2mm's I assume its a wiring or sensor issue but I'm not sure and It won't seem to idle long enough for diagnostics mode Have checked so far: 2 different MAP sensors The timing is fine Battery is being charged at ~14volts TPS unplugged made little to no difference There is fuel pressure and can hear fuel pumps Runs on all 4 cylinders Any recommendations as I am a bit stuck for idea at the moment? Report
October 3, 201511 yr comment_700513 Idling 1000rpm cold or hot? If cold then that's way lower than what 4AGEs normally cold-idle at... Report
October 3, 201511 yr comment_700515 Where's the vac leak. Edit: have you adjusted the tps to specs? Throttle body idle adjustment screw isn't all the way in or the port blocked? Report
October 3, 201511 yr Author comment_700516 Vac leak is just a hose with a bolt shoved in the end. Haven't adjusted the TPS will do it this afternoon! Are bigport and smallport specs the same? I'm not sure if he has touched the idle will also confirm this afternoon. Report
October 3, 201511 yr comment_700518 Yeah specs are the same. If you have the time I'd pull the entire throttle body off to do it and give the idle port a good clean out, and make sure all the other unnecessary ports in the throttle body are blocked off. Edit, reread first post, might be the aav port isn't blocked creating a vac leak. https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcQDobjuvtxRGfdVRHhoB50NzhrcmhXYgfMOJQtjPLxIOTxgGul3DVkXbOjY. I'm assuming a cut and shut manifold with ISCV delete? Report
October 3, 201511 yr comment_700519 Also assuming all timing marks (cams and crank/timing gear have been checked? Mine was out by a tooth and would idle fine but die when revving. Report
October 4, 201511 yr Author comment_700532 One of the pins on my fuel pump wiring was loose so It would drop a lot of voltage from the vibrations of the car. Idles now but hunts a lot, we pulled the throttle body off and are going to proper delete IACV as he never filled the hole Thanks a lot Reed! Will check the timing gear if any issues persist after this. Report
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