smitty1037

I own a 00 RX300 AWD. Love the car, 255K miles on it, almost no problems. I had an issue, misfire caused gas to go into front catalytic converter and destroy it. My mechanic (family mechanic for twenty years) gutted the cat. I get the error codes listed below. Which error codes are causing my car to go into this 'limp home' mode and not shift into overdrive? P0300 --- RANDOM MISS P0304 - cylinder four misfire P0171 - too lean P1130 - MANUFACTURER CONTROL FUEL AIR METERING P1150 - fuel air metering again My theory is that replacing the front cat will eliminate all of the error codes except possibly the P0304. I believe there may be a bad fuel injector on #4.... Help is appreciated in advance. This is a great site.

I do not need to go thru any emissions testing...

Gents, I have a 2000 Lexus RX300 with 248,000 miles. On a side note I've had almost no issues up to this point. Catalytic convertor was shot. My mechanic removed it. Now I need to trick the O2 sensors? How is this done? Or is it easier to just replace the cat...?