SethGs300GRS190r

i recently unbolted my rear mufflers and the car started popping so i reattached the muffler and it still doesnt drive right and idles very weirdly around 650rpm
i cleaned my MAF and check oil i dont know what else to do i dissconected the batter and reattched it and its still doing it and throwing me a check VSC and engine light what can i do to fix it
????
it also has a hard time accelorating as it hesitates going up rpm

mspearl95

did you pull the error codes?

SethGs300GRS190r

i dont have a obd scanner tool

93SCMax

2007 GS 300, you aren't in the US...correct? The 2007 GS was a GS350. Different animal. Find someone who can scan your codes.

SethGs300GRS190r

i live in australia and its a gs300 to confirm i have the codes but dont know how to fix... here are the 4 codes i got
- cyl 4 misfire
- air intake sensor 1 circuit high
- mass or volume air flow a circuit low
- random/multiple cyl misfire detected

someone know any fixes or parts to replace?
thanks

ibidu1

iTrader: (1)

Theres hoses that run along the sides of the airbox, make sure there attached it runs down the side of the frame. If thats good, I would search for air leaks or gaps in the intake boot. Make sure theres no torn hoses, just inspect as much as you can. I would also remove the throttle body and clean that aswell while your at it.