vbjr69

I have a 02 rx300 that has been well maintained with regular service. I have the following codes.... P0100 mass air flow sensor, po110 intake air temp, p1135 air fuel sensor, p0172 & p0175 which i beleive are the o2 sensors. The idel is about 500 rpm's lower than normal and is a little hard to start and occaisonally stalls. I have installed a new mass air sensor, disconnected the battery and the above problems still exist. I checked the hose on the back of the air box and it is connected properly.

I read somewhere that a bad o2 could cause the other codes to come up. I dont want to continue replacing expensive sensors for the other codes if its the o2 sensors causing the problems. Can any one help???

iolmaster

iTrader: (1)

Sounds like you may have an Idle air control valve problem.