firstlex01

hey there, ok i have a 2001 is300 and this has been a ongoing process of trial and error!! the situation: the car has no power! the car starts up with ease and idles with ease, but the second you put any throttle the car wants to BOG. any amount of throttle it will do this in park! and when in drive the same thing happens, the car has zero acceleration and it sounds like it want to die but wont! its really sad that its doing this and need to get it fixed! what i have changed is: fuel pump, and spark plugs! nothing has worked so far, and would like to know what the next step would be also there are engine codes also, this is what i got: P0171 P0174 AND AGAIN, P0171 P0174 please help me and thank you again.

hello everyone, i am new here and i got my first new question.!!! so i have a 2001 is300 auto, with 133K KM (82K Miles), the only mod is a injen short ram air intake with a cone filter, anyways what i had done is got a oil change and they told me that my filter was dirty and they offered to clean it for me( blow it out) so they did, i was doing this before i was leaving for a trip and was going to be away from home for 2 months, so on the highway drive down there i get a check engine light...2 months later i get a chance to get it checked and this is what i found. P0171 System Too Lean (Fuel Trim) P0174 System Too Lean (A/F Lean Malfunction, Bank 2) P0130 HO2S Circuit Malfunction, Bank 1 Sensor 1 P0133 HO2S Circuit Slow Response, Bank 1 Sensor 1 P0153 HO2S Circuit Slow Response, Bank 2 Sensor 1 P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction what i noticed is that it wants to stall on me when i give it some quick throttle and in reverse or drive it actually stalls and dies on me in gear!!! it seems to hesitate for a quick second in neutral and then the revs go up...what is the problem>??? what did they do to mty car> thanks.