High idle

[Yammie84]

Hi I have a 07 phazer gt and it revs up to 4500 rpm on startup then idles down eventually when warms up. When riding for a bit let go of throttle and it will instantly stall but I can start it up again and go

 

[YukonMP]

Go into diagnostic mode and check the readings for throttle position sensor (TPS). They may be off. I can kill mine by chopping the throttle but not at rpms as high as you refer to.

 

[Yammie84]

Just checked the TPS it's a 13 and 101