clarksrj

The oil light came on, I took it to the dealer and they verified that it had the sludge problem. Lexus rebuilt the engine under their extended warranty program. I have had this check engine light problem since the rebuild. I think I have to prove to them now that they did not put it back together properly for them to fix it.

After the last check engine light, I took the car to Autozone and now I have the P0171 code. Given the fact that there was a rebuild done on the engine, I am pretty sure the car must have an intake vacuum leak. I guess I will have to take it back to the dealer to have them find the leak.

After I brought the car back from the dealer where they told me it would be 800+ to replace the 2 sensors, I said I would do it myself and I cleared the codes. It ran until just yesterday without a check engine light. The light came on again. lexushead, just to give you a little background, I replaced the firewall side sensor about 3 years ago and the radiator side has never been replaced. I find if very had to believe that both sensors would fail at the same time. I am going to take it to a parts store to see if I can get the voltage. Is it possible that something else is going on that is causing those codes to trip?

My 1999 ES300 recently had the engine rebuilt due to the sludge problem. Before the rebuild no check engine codes were present. After the rebuild, the check engine light came on within 30 miles of service. I brought it back to the dealer and the dealer pulled these 2 codes P1133 and P1153 (Air/Fuel Bank 1 and 2 Sensor 1 malfuntions). They said the 2 Air/Fuel sensors needed to be replace. I find that hard to believe that these sensors coincidently went bad just after the rebuild. The dealer will not replace them for free or do any further diagnosis. I think they did not put something back together properly or damaged something in the rebuild. Does anyone know how I determine what the real cause of the problem is? Do you have any recommendations of reputable shops in the Alpharetta, GA area that I could take it to that would be able to determine the real cause of the problem?