bjoffe

Thanks all, I am cleaning Throttle Body today and I will check the vaccuum line. If that doesnt work I will be changing Fuel Filter, but leaving the seat off. Then I will change the fuel pump. I just REALLY did not want to spend the $180 on a fuel pump after spending over $200 for the O2 sensor. Again, thanks to eveyone for advice I will update...

Thanks. I will try the throttle body and the fuel filter.

Hi all, I have read some posts about some of the newer RX models having issues with hesitation upon accelerating from a stop. I am having the same issue with my 1999 RX 300. The car has approx 115k miles, so my question is if anyone thinks this is the Fuel Pump or Filter or Sending Unit. The Check Engine Light also was on and it read it was running lean on the back side of the engine so we replaced the O2 sensor, then on the way home the light came back on. Checked it and it was running lean on the front side of the engine now. Has anyone else experienced these types of problems with a 1999 RX 300? Thanks in advance.