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Old 09-28-2016, 09:34 AM   #1
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High idle when shifting and when stoppef

My 2000 Boxster 2.7 liter had no throttle response and throttle lag, installed new throttle body, throttle response fine, smooth stable idle, but now two months later it tends to go into high idle between gears and when I stop, about 1100 rpm when I stop, any idea what is causing this ???
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Old 09-29-2016, 03:46 PM   #2
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CEL light on? Codes?

I swapped in a 74 mm TB and inadvertently cracked the AOS to TB plastic tube and had rough idle, high idle, and CEL light came on with misfire codes. All I can think is that you have a vacuum leak somewhere, loose boots. Check all boots and hose connection around TB and tighten hose clamps... But first check for codes.
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2002 Boxster S - NHP 200 Cell Headers,test pipes,Borla CatBack,Competition Plenum,74 mm TB, EVOMS Tune,Tarett UDP,Eibach Swaybars,H&R Sport Springs,TuneRS rear toe links,wheel studs,15 mm wheel spacers on all 4,EBC yellow stuff pads,Sebro rotors, EBS oil baffles,160 deg Thermostat,2 quart Accusump,full filtration remote oil filter,rad fan switch,custom gauge/switch plate, Race Capture data logging, 80K miles
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