My lex

Posted by mcheesm on Jul 14, 2009

i just had that problem recently, your car is running on safe mode, most likely your knock sensor is bad, so your car is running very rich and the gears not shifting. on the lexus rx300 their are 2 knock sensors on top of the block and under the intake manifold. let me know if you need help on how to replace it. i'll guide you through. email at mcheesm@gmail.com part is about 180 a piece. and you have two. diagnose it with obd2 diagnostics and it will show you code on which one to replace if you dont have much money but its better to replace both at the same time.