my throttle shuts down when wot it goes 100% to 44%. no engine light is on. i replaced maf sensor check boost leaks over and over. my dealer is no help they suck. i dont know what else could be doing it. any idies.

08 tc all stock s/c, jvt header. forge bpv

 

It could be your Accelerator Pedal Position Sensor:



P/N: 7801021020 Est. cost: $380

Might be a pricey thing to just go out and buy for a trial and error way of troubleshooting. But if you think everything is straight with the car ie: air filter, MAF, clean injectors, proper tune / reflash, good plugs..... then i would say try it.

 

just wreck the car, sue toyota - big profit

 

i aim for the people running stop lights. but until then it dosnt make any sense. as soon as the throttle starts to close i can let off and floor it again and it builds boost again and stays 100%. it wouldnt have any thing to do the the header and i dont have the anti fouler fix done? i cant put the stock one back on cause the 02 sensor is stuck in the header for what ever reason it went hand tight in. and allso befor i supercharged it i ran a 16.0 at 86mph so somthing was wrong befor the supercharger?

 

WATCHING

 

me 2 very interesting problem

 

has anyone every had a bad knock sensor or cps? what would be like if it was bad? and where is the knock sensor located? my guess is it has to be electronical because the throttle closing so it cant be bad timeing or anything like that. cant beleave this never happened to anyone else

 

my afr is also high 17 to lean at idle and i cant fix it no matter what i do.

 

i think i have the same problem on mine... my cel came on and they said i needed a new o2 sensor(afr sensor) the one on the header...